IOS语音XML网关到CVP呼叫流使用MRCPv2 ASR/TTS

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已更新: 2007 年 9 月 19 日
文档 ID:98582

非歧视性语言

此产品的文档集力求使用非歧视性语言。在本文档集中，非歧视性语言是指不隐含针对年龄、残障、性别、种族身份、族群身份、性取向、社会经济地位和交叉性的歧视的语言。由于产品软件的用户界面中使用的硬编码语言、基于 RFP 文档使用的语言或引用的第三方产品使用的语言，文档中可能无法确保完全使用非歧视性语言。 深入了解思科如何使用包容性语言。

关于此翻译

思科采用人工翻译与机器翻译相结合的方式将此文档翻译成不同语言，希望全球的用户都能通过各自的语言得到支持性的内容。 请注意：即使是最好的机器翻译，其准确度也不及专业翻译人员的水平。 Cisco Systems, Inc. 对于翻译的准确性不承担任何责任，并建议您总是参考英文原始文档（已提供链接）。

简介

语音可扩展标记语言(VXML)是万维网联盟(W3C)定义的标准。 它旨在创建音频对话，提供合成语音、口语单词识别、DTMF数字识别和录制的口语音频。VXML服务器和客户端使用公认的HTTP协议来交换VXML文档/页面。

思科语音门户(CVP)提供可通过电话访问的智能交互式语音应答(IVR)应用。有三种CVP配置类型：

  1. 独立服务

  2. CVP呼叫控制

  3. 呼叫队列和转接

合成语音和口语/DTMF数字识别功能由文本到语音(TTS)和自动语音识别服务器(ASR)提供。 IOS® VXML网关通过媒体资源控制协议(MRCP)与TTS/ASR服务器通信。 MRCP(RFC 4463)有两个版本，即MRCPv1(MRCP over RTSP)和MRCPv2(MRCP over SIP)。

本文档介绍使用MRCPv2 TTS/ASR服务器的独立服务部署中IOS语音XML网关到CVP呼叫的呼叫流。在CVP VXML服务器上部署了一个药房应用示例。

先决条件

要求

本文档没有任何特定的要求。

使用的组件

本文档中的信息基于以下软件和硬件版本：

  • IOS VXML网关：思科AS5400XM、IOS 12.4(15)T1

  • VXML服务器：CVP 4.0

  • ASR/TTS服务器：洛昆多语音套件7.0

本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您使用的是真实网络，请确保您已经了解所有命令的潜在影响。

规则

有关文档规则的详细信息，请参阅 Cisco 技术提示规则。

配置

本部分提供有关如何配置本文档所述功能的信息。

注意：使用命令查找工具(仅限注册客户)可获取有关本节中使用的命令的详细信息。

网络图

本文档使用以下网络设置：

index-ios-1.gif

配置

本文档使用以下配置：

VXML网关配置 

!--- Define Hostname to IP Address !---- mapping for ASR and TTS servers


ip host asr-en-us 172.18.110.76
ip host tts-en-us 172.18.110.76 


!--- Define the Voice class URI to match !---- the SIP URI of ASR Server in the dial-peer


voice class uri  TTS sip
 pattern tts@172.18.110.76


!--- Define the Voice class URI to match !---- the SIP URI of TTS server in the dial-peer


voice class uri  ASR sip
 pattern asr@172.18.110.76 


!--- Define the amount of maximum memory !---- to used for downloaded prompts


ivr prompt memory 15000 


!--- Define the SIP URI of ASR !---- and TTS Server


ivr asr-server sip:asr@172.18.110.76
ivr tts-server sip:tts@172.18.110.76


!--- Configure an application service for !---- CVP VXML CVPSelfServiceBootstrap.vxml


application
 service CVPSelfService flash:
CVPSelfServiceBootstrap.vxml
  paramspace english language en
  paramspace english index 0
  paramspace english location flash:
  paramspace english prefix en 


!--- Configure an application service for !---- CVP VXML CVPSelfService.tcl Script !--- CVPSelfService-app parameter specifies !---- the name of the VXML Application !--- CVPPrimary parameter specifies the !---- IP address of the VXML server


service Pharmacy flash:CVPSelfService.tcl
  paramspace english index 0
  paramspace english language en
  paramspace english location flash:
  param CVPSelfService-port 7000
  param CVPSelfService-app 
GoodPrescriptionRefillApp7
  paramspace english prefix en
  param CVPPrimaryVXMLServer 172.18.110.75


!--- Specifies the Gateway’s RTP !---- stream to the ASR / TTS to go around the !---- Content Service Switch !---- instead of through the CSS.


mrcp client rtpsetup enable


!--- Specify the maximum memory size !---- for the HTTP Client Cache


http client cache memory pool 15000 


!--- Specify the maximum number of file !---- that can be stored in the !---- HTTP Client Cache


http client cache memory file 500 


!--- Disable Persistent !---- HTTP Connections


no http client connection persistent 


!--- Configure the T1 PRI 


controller T1 3/0
 framing esf
 linecode b8zs
 pri-group timeslots 1-24 


!--- Configure the ISDN switch !---- type and incoming-voice !---- under the D-channel interface


interface Serial3/0:23
 no ip address
 encapsulation hdlc
 isdn switch-type primary-net5
 isdn incoming-voice modem
 no cdp enable 


! --- Configure a POTS !---- dial-peer that will be used !---- as inbound dial-peer for calls coming ! --- in across the T1 PRI line. !---- The “pharmacy”service !---- is applied under this dial-peer.


dial-peer voice 1 pots
 service pharmacy
 destination-pattern 5555
 direct-inward-dial
 port 3/0:D
 forward-digits all 


!--- Configure a SIP Voip !---- dial-peer that will be used !---- as an outbound dial-peer when the !---Gateway initiates a MRCP overc SIP !---- session to the ASR server. !---- Codec = G711ulaw, DTMF-Relay !---- = RTP-NTE, No Vad


dial-peer voice 5 voip
 session protocol sipv2
 destination uri ASR
 dtmf-relay rtp-nte
 codec g711ulaw
 no vad    


!--- Configure a SIP Voip !---- dial-peer that will be used !---- as an outbound dial-peer when the !---Gateway initiates a MRCP !---- overc SIP session to the TTS server !--- Codec = G711ulaw, DTMF-Relay = RTP-NTE, !---- No Vad


dial-peer voice 6 voip
 session protocol sipv2
 destination uri TTS
 dtmf-relay rtp-nte
 codec g711ulaw
 no vad

呼叫流示例

此部分描述该的呼叫流从此配置示例的结果。

  1. ISDN呼叫通过T1 PRI 3/0到达PSTN/VXML网关。

  2. IOS网关将POTS拨号对等体1作为此呼叫的入站拨号对等体。

  3. IOS网关将呼叫控制移交给与拨号对等体1关联的药房服务。

  4. 与药房服务关联的CVP VXML/TCL脚本向VXML服务器发送HTTP GET请求。

  5. VXML服务器返回200 OK响应。此响应包含VXML文档/页面。

  6. IOS网关执行VXML文档。

  7. 如果VXML文档为音频提示指定URL，IOS网关将下载音频文件并播放提示。

  8. 如果VXML文档为音频提示指定文本，IOS网关将使用拨号对等体5与tts@172.18.110.76（TTS服务器）建立SIP会话。建立SIP会话后，它使用SIP INVITE的SDP 200 OK响应中提供的TCP端口号打开与TTS服务器的TCP连接。此TCP连接用于在IOS网关和TTS服务器之间交换MRCP消息，如SPEAK、SPEAK-COMPLETE。

    TTS服务器将G.711ulaw RTP音频流发送到SIP INVITE的SDP中网关提供的IP地址和UDP端口号。

  9. 如果VXML文档指定网关以识别DTMF数字和/或口语，则IOS网关与asr@172.18.110.76（ASR服务器）建立与拨号对等体6的SIP会话。建立SIP会话后，它使用SDP 200 OK响应中提供的TCP端口号打开与ASR服务器的TCP连接SIP邀请。此TCP连接用于在IOS网关和ASR服务器之间交换MRCP消息，如DEFINE GRAMMAR、COMPLETE、RECOGNITE和RECOGNITION-COMPLETE。

    IOS VXML网关将G.711ulaw RTP音频流发送到SIP 200 OK响应的SDP中ASR提供的IP地址和UDP端口号。IOS VXML网关将PSTN用户输入的数字作为RTP-NTE事件发送到ASR服务器。

  10. 执行VXML文档后，网关发送HTTP POST请求（包含一组参数），如VXML文档/页的<submit>标记中所指定。

  11. 步骤6 - 10针对服务器发送的每个VXML文档。

  12. 当VXML应用程序完成向调用方提供的服务时，它会发送一个VXML文档，该文档在<form>元素中仅包含<exit/>标记。

  13. IOS网关断开与TTS和ASR服务器建立的MRCPv2会话。

  14. IOS网关断开ISDN端的呼叫。

验证

使用本部分可确认配置能否正常运行。

命令输出解释程序（仅限注册用户）(OIT) 支持某些 show 命令。使用 OIT 可查看对 show 命令输出的分析。

  • 显示呼叫活动语音简介 

    11F8 : 160 333356110ms.
   1 +10 pid:1 Answer 5555 active
 dur 00:00:54 tx:1740/300598 rx:364/85472
 Tele 3/0:D (160) [3/0.1] 
   tx:15145/15145/0ms None noise:-52 
   acom:6  i/0:-32/-64 dBm 

Telephony call-legs: 1
SIP call-legs: 0
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Media call-legs: 0
Total call-legs: 1

  • 显示呼叫活动媒体简介 

    11F8 : 163 333360880ms.1 
   +60 pid:6 Originate 
   sip:tts@172.18.110.76:5060 active
 dur 00:00:44 tx:0/0 rx:2212/353545
 IP 172.18.110.76:10000 SRTP: 
   off rtt:0ms pl:
   4485/0ms lost:0/1/0 delay:65/65/65ms 
   g711ulaw TextRelay: off
 media inactive detected:n 
   media contrl rcvd:
   n/a timestamp:n/a
 long duration call detected:n 
   long duration 
   call duration:n/a timestamp:n/a11F8 : 
   164 333360890ms.1 +20 pid:5 Originate 
   sip:asr@172.18.110.76:5060 active

 dur 00:00:44 tx:1687/297152 rx:0/0
 IP 172.18.110.76:10002 SRTP: 
   off rtt:0ms 
   pl:6550/30ms lost:0/2/0 delay:65/65/65ms 
   g711ulaw TextRelay: off
 media inactive detected:n media contrl 
   rcvd:n/a timestamp:n/a
 long duration call detected:n 
   long duration 
   call duration:n/a timestamp:n/a 

Telephony call-legs: 0
SIP call-legs: 0
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Media call-legs: 2
Total call-legs: 2

  • 显示mrcp客户端会话活动详细信息 

    No Of Active MRCP Sessions: 1 

Call-ID: 0xA0 same: 0
--------------------------------------------
Resource Type: Synthesizer            
   URL: sip:tts@172.18.110.76
 Method In Progress: SPEAK                
   State: S_SYNTH_SPEAKING 

 Associated CallID: 0xA3
 MRCP version: 2.0
 Control Protocol: TCP Server IP Address: 
   172.18.110.76  Port: 51000 

  Data Protocol: RTP Server IP Address: 
   172.18.110.76  Port: 10000
  Signalling URL: sip:tts@172.18.110.76:5060 

  Packets Transmitted: 0 (0 bytes)
  Packets Received: 2265 (361968 bytes)
  ReceiveDelay: 65     LostPackets: 0
--------------------------------------------
--------------------------------------------

Resource Type: Recognizer             
   URL: sip:asr@172.18.110.76
 Method In Progress: RECOGNIZE            
   State: S_RECOG_RECOGNIZING 

Associated CallID: 0xA4
MRCP version: 2.0
Control Protocol: TCP Server IP Address: 
   172.18.110.76  Port: 51001 

Data Protocol: RTP Server IP Address: 
   172.18.110.76  Port: 10002 

Packets Transmitted: 1791 (313792 bytes)
Packets Received: 0 (0 bytes)
ReceiveDelay: 60     LostPackets: 0

  • 显示VoIP RTP连接 

    VoIP RTP active connections :
No. CallId     dstCallId  LocalRTP 
   RmtRTP LocalIP         
   RemoteIP
1   163        160        18964    
   10000  14.1.16.25      
   172.18.110.76
2   164        160        23072    
   10002  14.1.16.25      
   172.18.110.76
Found 2 active RTP connections

  • 显示http客户端缓存 

    HTTP Client cached information
==============================
Maximum memory pool allowed for 
   HTTP Client caching 
   = 15000 K-bytes
Maximum file size allowed for caching 
   = 500 K-bytes
Total memory used up for Cache 
   = 410 Bytes
Message response timeout = 10 secs
Total cached entries     = 1
Total non-cached entries = 0 

           Cached entries
           ============== 

entry 114,  1 entries
Ref   FreshTime   Age          Size        
   context
---   ---------   ---          ----        
   -------
1     86400       48           1505        
   0 
url: http://172.18.110.75/Welcome-1.wav

故障排除

本部分提供的信息可用于对配置进行故障排除。

调试命令

配置IOS网关，使其在日志记录缓冲区中记录调试并禁用“logging console”。

注意：在使用debug命令之前，请参阅有关Debug命令的重要信息。

注意：以下命令用于配置网关以将调试存储在网关的日志记录缓冲区中：

  • service timestamps debug datetime msec

  • 服务顺序

  • no logging console

  • logging buffered 5000000 debug

  • clear log

以下是用于排除配置故障的debug命令：

  • debug isdn q931

  • debug voip ccapi inout

  • debug voip application vxml default

  • debug voip application vxml dump

  • debug ccsip message

  • debug mrcp detail

  • debug http client all

  • debug voip rtp session nte named-event

调试输出

此部分为此示例呼叫流提供debug输出：

  1. 网关从PSTN接收入站呼叫。

  2. 网关与入站拨号对等体1匹配。

  3. 呼叫将转接至药房服务。

  4. 呼叫在ISDN端连接。

  5. 网关开始执行CVPSelfServiceBootstrap.vxml VoiceXML脚本。

  6. 网关向VXML服务器发送HTTP GET请求。

  7. 网关从VXML服务器接收200 OK消息。此响应的消息正文包含VXML文档(1)。 此VXML文档告诉网关播放媒体文件，称为Welcome-1.wav，位于媒体服务器中。

  8. 网关向媒体服务器发送HTTP GET请求以下载Welcome-1.wav文件。

  9. 网关从媒体服务器接收200 OK，并在HTTP消息正文中接收欢迎–1.wav的内容。

  10. 网关将POST HTTP请求发送到服务器，如VXML文档(1)的“提交”选项中所定义。

  11. 网关收到200 OK的POST HTTP请求。消息正文包含VXML文档(2)。 此VXML文档告诉网关播放“感谢您呼叫Audium药房”。 请注意，此提示需要由文本到语音服务器合成。

  12. 网关发送VXML文档(2)的Submit选项中定义的HTTP POST请求。

  13. 网关收到HTTP POST请求的200 OK响应。消息正文包含VXML文档(3)。 此VXML文档定义菜单提示，告知呼叫方输入1或说“重新填充”、“2”或说“药剂师”。提示由文本到语音服务器合成。输入（语音/DTMF）使用自动语音识别器进行识别。

  14. 网关创建用于DTMF/语音识别的语法。网关与ASR服务器建立会话后，这些语法将发送到ASR服务器。

  15. 网关执行拨号对等体查找，以与文本到语音服务器建立SIP会话。匹配出站拨号对等体6。

  16. 网关向TTS服务器发送SIP INVITE。INVITE消息的SDP包含音频流和MRCPv2应用（语音通道）的媒体信息。

  17. 网关执行拨号对等体查找，以与自动语音识别服务器建立SIP会话。匹配出站拨号对等体5。

  18. 网关向ASR服务器发送SIP邀请。SDP包含音频流、DTMF中继和MRCPv2应用（语音记录信道）的媒体信息。

  19. 网关从ASR服务器接收200 OK响应（针对SIP INVITE）。SIP INVITE消息的SDP指定以下内容：

    • 音频流的G711ulaw编解码器、IP地址和RTP端口号

    • 此RTP流的方向属性："recvonly"

    • 基于RTP-NTE的DTMF中继

    • 网关用于与ASR服务器建立MRCPv2会话的TCP端口号(51001)

  20. 网关将SIP ACK发送到ASR服务器，并在网关和ASR服务器之间建立用于自动语音识别的SIP会话。

  21. 网关向ASR服务器发送“DEFINE-GRAMMER”MRCP请求。（此处仅显示一个请求。）

  22. 网关收到200 COMPLETE响应的DEFINE-GRAMMAR请求。

  23. 网关从TTS服务器接收200 OK响应（针对SIP INVITE）。SIP INVITE消息的SDP指定以下内容：

    • 音频流的G711ulaw编解码器、IP地址和RTP端口号

    • 此RTP流的方向属性："sendonly"

    • 基于RTP-NTE的DTMF中继

    • 网关用于与TTS服务器建立MRCPv2会话的TCP端口号(51000)

  24. 网关向TTS服务器发送SIP ACK，并在网关和TTS服务器之间建立文本到语音的SIP会话。

  25. 网关向ASR服务器发送“识别”MRCP请求，以开始识别DTMF/口语。

  26. ASR服务器向网关发送“正在进行”响应（用于识别请求）。

  27. 网关完成Welcome-1.wav媒体文件的下载，将其存储在缓存中，并向呼叫方播放提示。

  28. 网关向TTS服务器发送“SPEAK”MRCP请求，以播放“Thank-You-for-Calling”提示。

  29. TTS服务器向SPEAK请求发送“IN-PROGRESS”响应。

  30. TTS服务器在发出“致谢您呼叫”提示后发送“SPEAK-COMPLETE”消息。

  31. 网关向TTS服务器发送“SPEAK”MRCP请求，以播放“Menu”提示（输入1或Say Refil / Enter 2或Say pharmacist）。（未显示调试输出。）

  32. TTS服务器发送IN-PROGRESS、SPEAK-COMPLETE消息并完成提示的播放。（未显示调试输出。）

  33. PSTN主叫方输入“1”以选择重新填充。网关将此数字作为RTP-NTE事件发送到ASR服务器。

  34. ASR服务器向网关发送“RECOGNITION-COMPLETE”消息，通知网关它已识别到请求的事件之一（本例中为数字1）。

  35. VXML网关在收到来自ASR服务器的成功识别通知后，发送在VXML文档(3)的SUBMIT标记中指定的HTTP POST请求。 此POST请求通知VXML服务器数字1是由PSTN呼叫方输入的。

  36. 然后，VXML服务器会发送另一个VXML文档，要求呼叫方在此输入处方。（未显示调试输出。）

  37. 网关将MRCP消息发送到TTS以发出提示。（调试输出未显示，但与步骤28-30类似。）

  38. 网关将MRCP消息发送到ASR以检测用户说明的4位处方号。（调试输出未显示，但与步骤25-26类似。）

  39. ASR识别4位处方号，并向IOS VXML网关发送“RECOGNITION-COMPLETE”MRCP消息。

  40. 网关通过发送HTTP POST请求将处方号通知给VXML服务器。（调试输出未显示，但与步骤35类似。）

  41. VXML服务器发送VXML页以收集取件时间并通知呼叫方处方准备取件。网关通过与TTS和ASR服务器交互来执行这些页面。（未显示调试输出。）

  42. VXML服务器发送的最终VXML文档仅包含<form>中的<exit\>标记。这将告知网关终止VXML会话。

  43. 网关终止VXML应用。

  44. 网关断开与ASR服务器建立的SIP会话。

  45. 网关断开与TTS服务器建立的SIP会话。

  46. 网关断开ISDN端的呼叫。

来自PSTN的入站呼叫 

*Jan 18 03:34:52.735: ISDN Se3/0:23 
   Q931: RX <- SETUP pd = 8  callref = 0x005A
        Bearer Capability i = 0x8090A2 
                Standard = CCITT 
                Transfer Capability = Speech  
                Transfer Mode = Circuit 
                Transfer Rate = 64 kbit/s 
        Channel ID i = 0xA98381 
                Exclusive, Channel 1 
        Called Party Number i = 0x81, '5555' 
                Plan:ISDN, Type:Unknown
*Jan 18 03:34:52.735: //-1/2AEE8C2A801C/
   CCAPI/cc_api_display_ie_subfields:
   cc_api_call_setup_ind_common:
   cisco-username=
   ----- ccCallInfo IE subfields -----
   cisco-ani=
   cisco-anitype=0
   cisco-aniplan=0
   cisco-anipi=0
   cisco-anisi=0
   dest=5555
   cisco-desttype=0
   cisco-destplan=1
   cisco-rdie=FFFFFFFF
   cisco-rdn=
   cisco-rdntype=-1
   cisco-rdnplan=-1
   cisco-rdnpi=-1
   cisco-rdnsi=-1
   cisco-redirectreason=-1   fwd_final_type =0
   final_redirectNumber =
   hunt_group_timeout =0

入站拨号对等体1匹配 

*Jan 18 03:34:52.735: 
   //-1/2AEE8C2A801C/
   CCAPI/cc_api_call_setup_ind_common:
   Interface=0x664B4BA4, Call Info(
   Calling Number=,(Calling Name=)(TON=Unknown, 
   NPI=Unknown, Screening=Not Screened, 
   Presentation=Allowed),
   Called Number=5555(TON=Unknown, NPI=ISDN),
   Calling Translated=FALSE, Subscriber 
   Type Str=RegularLine, 
   FinalDestinationFlag=TRUE,
   Incoming Dial-peer=1, Progress 
   Indication=NULL(0), 
   Calling IE Present=FALSE,
   Source Trkgrp Route Label=, 
   Target Trkgrp Route Label=, 
   CLID Transparent=FALSE), 
   Call Id=-1

呼叫转接至药房服务 

*Jan 18 03:34:52.739: 
   //127/2AEE8C2A801C/CCAPI
   /cc_process_call_setup_ind:
   >>>>CCAPI handed cid 127 with tag 1 to app 
   "_ManagedAppProcess_Pharmacy"
*Jan 18 03:34:52.739: 
   //127/2AEE8C2A801C/CCAPI/ccCallSetupAck:
   Call Id=127

呼叫在ISDN端接通 

*Jan 18 03:34:52.739: 
   ISDN Se3/0:23 Q931: TX -> 
   CONNECT pd = 8  callref = 
   0x805A
*Jan 18 03:34:52.739: 
   //127/2AEE8C2A801C/CCAPI/ccCallHandoff:
   Silent=FALSE, Application=0x663106C4, 
   Conference Id=0xFFFFFFFF
*Jan 18 03:34:52.743: //127//VXML:/Open_CallHandoff:

网关开始执行CVPSelfServiceBootstrap.vxml VoiceXML脚本 

 
*Jan 18 03:34:52.755: 
   //127/2AEE8C2A801C/VXML:
   /vxml_vxml_proc:
<vxml> 
   URI(abs):flash:
   CVPSelfServiceBootstrap.vxml 
   scheme=flash 
   path=CVPSelfServiceBootstrap.vxml 
   base= 
   URI(abs):flash:
   CVPSelfServiceBootstrap.vxml 
   scheme=flash 
   path=CVPSelfServiceBootstrap.vxml 
   lang=none version=2.0 
<script>:
*Jan 18 03:34:52.799: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval: 
*Jan 18 03:34:52.863: //127/2AEE8C2A801C/VXML
   :/vxml_jse_global_switch:  
   switch to scope(application) 
<var>: namep=handoffstring 
   expr=session.handoff_string
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var handoffstring=session.
   handoff_string) 
<var>: namep=application expr=getValue('APP')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var application=getValue('APP')) 
<var>: namep=port expr=getValue('PORT')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval: 
   expr=(var port=getValue('PORT')) 
<var>: namep=callid expr=getValue('CALLID')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var callid=getValue('CALLID')) 
<var>: namep=servername expr=getValue('PRIMARY')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var servername=getValue('PRIMARY')) 
<var>: namep=var1 expr=getValue('var1')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var var1=getValue('var1')) 
<var>: namep=var2 expr=getValue('var2')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval: 
   expr=(var var2=getValue('var2')) 
<var>: namep=var3 expr=getValue('var3')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var var3=getValue('var3')) 
<var>: namep=var4 expr=getValue('var4')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval: 
   expr=(var var4=getValue('var4')) 
<var>: namep=var5 expr=getValue('var5')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval: 
   expr=(var var5=getValue('var5')) 
<var>: namep=status expr=getValue('status')
*Jan 18 03:34:52.867: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var status=getValue('status')) 
<var>: namep=prevapp expr=getValue('prevapp')
*Jan 18 03:34:52.871: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:
   expr=(var prevapp=getValue('prevapp')) 
<var>: namep=survive expr=getValue('survive')
*Jan 18 03:34:52.871: //127/2AEE8C2A801C/VXML
   :/vxml_expr_eval:  
   expr=(var survive=getValue('survive')) 
<var>: namep=handoffExit

网关向VXML服务器发送HTTP GET请求 

*Jan 18 03:34:52.875: 
   //127//HTTPC:/httpc_write_stream: 
   Client write buffer fd(3):
GET /CVP/Server?application=
   GoodPrescriptionRefillApp7&callid=
   2AEE8C2A-0AFB11D6-801C0013-
   803E8C8E&session.connection.remote.uri=555
5&session.connection.local.uri=5555 HTTP/1.1
Host: 172.18.110.75:7000
Content-Type: application/x-www-form-urlencoded
Connection: close
Accept: text/vxml, text/x-vxml, application/vxml, 
   application/x-vxml, application/voicexml, 
   application/x-voicexml, text/plain, tex
t/html, audio/basic, audio/wav, 
   multipart/form-data, 
   application/octet-stream
User-Agent: Cisco-IOS-C5400/12.4

网关从VXML服务器接收200 OK消息

此响应的消息正文包含VXML文档(1)。 VXML文档告知网关播放媒体文件Welcome-1.wav（位于媒体服务器中）。


*Jan 18 03:34:52.883: processing server 
   rsp msg: msg(67CA63A8)
   URL:http://172.18.110.75:7000/CVP/
   Server?application=GoodPrescription
RefillApp7&callid=2AEE8C2A-0AFB11D6-801C0013
   -803E8C8E&session.connection.
   remote.uri=5555&session.connection.local.
   uri=5555, fd(3):
*Jan 18 03:34:52.883: Request msg: 
   GET /CVP/Server?application=
   GoodPrescriptionRefillApp7&callid=
   2AEE8C2A-0AFB11D6-801C0013-803E8C8
E&session.connection.remote.
   uri=5555&session
   .connection.local.uri=5555 HTTP/1.1
*Jan 18 03:34:52.883: 
   Message Response Code: 200
*Jan 18 03:34:52.883: 
   Message Rsp Decoded Headers:
*Jan 18 03:34:52.883: 
   Date:Mon, 30 Apr 2007 16:58:39 GMT
*Jan 18 03:34:52.883: 
   Content-Type:text/xml;
   charset=ISO-8859-1
*Jan 18 03:34:52.883: 
   Connection:close
*Jan 18 03:34:52.883: 
   Set-Cookie:JSESSIONID=
   BBCE0F948ADFDB720497F587A7997538; 
   Path=/CVP 

*Jan 18 03:34:52.883: headers:
*Jan 18 03:34:52.883: HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=BBCE0F948ADF
   DB720497F587A7997538; Path=/CVP
Content-Type: text/xml;charset=ISO-8859-1
Date: Mon, 30 Apr 2007 16:58:39 GMT
Connection: close
 

*Jan 18 03:34:52.883: body:
*Jan 18 03:34:52.883: <?xml version="1.0" 
   encoding="UTF-8"?>
<vxml version="2.0" application=
   "/CVP/Server?audium_root=true&amp;
   calling_into=GoodPrescriptionRefillApp7" 
   xml:lang="en-us">
  <form id="audium_start_form">
    <block>
      <assign name="audium_vxmlLog" expr="''" />
      <assign name="audium_element
   _start_time_millisecs" 
   expr="new Date().getTime()" />
      <goto next="#start" />
    </block>
  </form>
  <form id="start">
    <block>
      <prompt bargein="true">
        <audio src="http://172.18.110.75/
   Welcome-1.wav" />
      </prompt>
      <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'initial_audio_group' 
   + '^^^' 
   + application.getEla
psedTime(audium_element_start_time_millisecs)" />
      <submit next="/CVP/Server" method="post" 
   namelist=" audium_vxmlLog" />
    </block>
  </form>
</vxml>

网关向媒体服务器发送HTTP GET请求以下载欢迎文件 — 1.wav 

GET /Welcome-1.wav HTTP/1.1
Host: 172.18.110.75
Content-Type: 
   application/x-www-form-urlencoded
Connection: close
Accept: text/vxml, 
   text/x-vxml, application/vxml, 
   application/x-vxml, 
   application/voicexml, 
   application/x-voicexml, 
   text/plain, tex
t/html, audio/basic, audio/wav, 
   multipart/form-data, 
   application/octet-stream
User-Agent: Cisco-IOS-C5400/12.4

网关从媒体服务器接收200 OK并接收HTTP消息正文中Welcome-1.wav的内容 

*Jan 18 03:34:55.647: 
   //127//HTTPC:/httpc_socket_read: 
*Jan 18 03:34:55.647: 
   read data from the socket 3 
   : first 400 bytes of data: 
HTTP/1.1 200 OK
Content-Length: 26450
Content-Type: audio/wav
Last-Modified: 
   Mon, 30 Apr 2007 15:36:51 GMT
Accept-Ranges: bytes
ETag: "e0c1445f3d8bc71:2d6"
Server: Microsoft-IIS/6.0
Date: Mon, 30 Apr 2007 16:58:42 GMT
Connection: close

RIFFJg(Unprintable char...)
   0057415645666D7420120001010401
   F00401F00108000666163744000176700
   64617461176700FFFFFF807
   FFFFFFF80FFFFFF80F
(other hex information not shown).

网关按照VXML文档(1)的“提交”选项中的定义向服务器发送POST HTTP请求 

POST /CVP/Server HTTP/1.1
Host: 172.18.110.75:7000
Content-Length: 67
Content-Type: 
   application/x-www-form-urlencoded
Cookie: $Version=0; JSESSIONID=BBCE0F948
   ADFDB720497F587A7997538; $Path=/CVP
Connection: close
Accept: text/vxml, text/x-vxml, 
   application/vxml, 
   application/x-vxml, 
   application/voicexml, 
   application/x-voicexml, 
   text/plain, tex
t/html, audio/basic, audio/wav, 
   multipart/form-data, 
   application/octet-stream
User-Agent: Cisco-IOS-C5400/12.4

网关收到200 OK的POST HTTP请求

消息正文包含VXML文档(2)。 VXML文档告诉网关播放“感谢您呼叫Audium药房”。 请注意，此提示需要由文本到语音服务器合成。

*Jan 18 03:34:55.651: 
   processing server rsp msg: 
   msg(67CA6960)URL:
   http://172.18.110.75:
   7000/CVP/Server, fd(4):
*Jan 18 03:34:55.651: Request msg: 
   POST /CVP/Server HTTP/1.1
*Jan 18 03:34:55.651: 
   Message Response Code: 200
*Jan 18 03:34:55.651: 
   Message Rsp Decoded Headers:
*Jan 18 03:34:55.651: 
   Date:Mon, 30 Apr 2007 16:58:42 GMT
*Jan 18 03:34:55.651: 
   Content-Type:text/xml;
   charset=ISO-8859-1
*Jan 18 03:34:55.651: Connection:close
*Jan 18 03:34:55.651: headers:
*Jan 18 03:34:55.651: HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=ISO-8859-1
Date: Mon, 30 Apr 2007 16:58:42 GMT
Connection: close
 

*Jan 18 03:34:55.655: body:
*Jan 18 03:34:55.655: <?xml version="1.0" 
   encoding="UTF-8"?>
<vxml version="2.0" application=
   "/CVP/Server?audium_root=true&amp;
   calling_into=GoodPrescriptionRefillApp7" 
   xml:lang="en-us">
  <form id="audium_start_form">
    <block>
      <assign name="audium_vxmlLog" expr="''" />
      <assign name="audium_element
   _start_time_millisecs" 
   expr="new Date().getTime()" />
      <goto next="#start" />
    </block>
  </form>
  <form id="start">
    <block>
      <prompt bargein="true">
   Thank you for calling Audium pharmacy.
   </prompt>
      <assign name="audium_vxmlLog" expr=
   "audium_vxmlLog + '|||audio_group$$$' 
   + 'initial_audio_group' 
   + '^^^' + application.getEla
psedTime(audium_element_start_time_millisecs)" />
      <submit next="/CVP/Server" method="post" 
   namelist=" audium_vxmlLog" />
    </block>
  </form>
</vxml>

网关发送VXML文档(2)的“提交”选项中定义的HTTP POST请求 

*Jan 18 03:34:55.667: 
   //127//HTTPC:/httpc_write_stream: 
   Client write buffer fd(4):
POST /CVP/Server HTTP/1.1
Host: 172.18.110.75:7000
Content-Length: 67
Content-Type: 
   application/x-www-form-urlencoded
Cookie: $Version=0; JSESSIONID=
   BBCE0F948ADFDB720497F587A7997538; 
   $Path=/CVP
Connection: close
Accept: text/vxml, text/x-vxml, 
    application/vxml, 
   application/x-vxml, application/voicexml, 
   application/x-voicexml, text/plain, tex
t/html, audio/basic, audio/wav, 
   multipart/form-data, 
   application/octet-stream
User-Agent: Cisco-IOS-C5400/12.4

网关收到HTTP POST请求的200 OK响应

消息正文包含VXML文档(3)。 此VXML文档定义菜单提示，告知呼叫方输入1或说“重新填充”，或输入2或说“药剂师”。提示由文本到语音服务器合成。输入（语音/DTMF）由自动语音识别器识别。

*Jan 18 03:34:57.499: 
   processing server rsp msg: 
   msg(67CA6B48)URL:
   http://172.18.110.75:7000/CVP/Server, fd(4):
*Jan 18 03:34:57.499: Request msg: 
   POST /CVP/Server HTTP/1.1
*Jan 18 03:34:57.499: 
   Message Response Code: 200
*Jan 18 03:34:57.499: 
   Message Rsp Decoded Headers:
*Jan 18 03:34:57.499: 
   Date:Mon, 30 Apr 2007 16:58:42 GMT
*Jan 18 03:34:57.499: 
   Content-Type:text/xml;charset=ISO-8859-1
*Jan 18 03:34:57.499: Connection:close
*Jan 18 03:34:57.499: headers:
*Jan 18 03:34:57.499: HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=ISO-8859-1
Date: Mon, 30 Apr 2007 16:58:42 GMT
Connection: close
 

*Jan 18 03:34:57.499: body:
*Jan 18 03:34:57.499: ... Buffer too large 
   - truncated to (4096) len.
*Jan 18 03:34:57.499: <?xml version="1.0" 
   encoding="UTF-8"?>
<vxml version="2.0" application=
   "/CVP/Server?audium_root=true&amp;
   calling_into=GoodPrescriptionRefillApp7" 
   xml:lang="en-us">
  <property name="timeout" value="60s" />
  <property name="confidencelevel" value="0.40" />
  <form id="audium_start_form">
    <block>
      <assign name="audium_vxmlLog" expr="''" />
      <assign name="audium_element
   _start_time_millisecs" 
   expr="new Date().getTime()" />
      <goto next="#start" />
    </block>
  </form>
  <form id="start">
    <block>
      <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'initial_audio_group' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
      <goto nextitem="choice_fld" />
    </block>
    <field name="choice_fld" modal="false">
      <property name="inputmodes" value="dtmf voice" />
      <prompt bargein="true">Say refills or press 1. 

Or. 

Say pharmacist or press 2.</prompt>
      <catch event="nomatch">
        <prompt bargein="true">Sorry. 

I did not understand that.  

Say refills or press 1. 

Say pharmacist or press 2.</prompt>
        <assign name="audium_vxmlLog" 
    expr="audium_vxmlLog 
   + '|||nomatch$$$' + '1' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
    expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'nomatch_audio_group' 
   + '^^^' + application.getElapsedTime(
   audium_element_start_time_millisecs)" />
      </catch>
      <catch event="nomatch" count="2">
        <prompt bargein="true">
   Sorry, I still did not get that. 

If you are using a speaker phone. 

Please use the phone keypad to make 
   your selection. 

Press 1 for refills.

Press 2 to speak to a pharmacist.</prompt>
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||nomatch$$$' + '2' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
    expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'nomatch_audio_group' 
   + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
      </catch>
      <catch event="nomatch" count="3">
        <prompt bargein="true">Gee.
 

Looks like we are having some trouble.</prompt>
        <assign name="audium_vxmlLog" 
    expr="audium_vxmlLog 
   + '|||nomatch$$$' + '3' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
    expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'nomatch_audio_group' 
    + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <var name="maxNoMatch" expr="'yes'" />
        <submit next="/CVP/Server" method="post" 
    namelist=" 
   audium_vxmlLog maxNoMatch" />
      </catch>
      <catch event="noinput">
        <prompt bargein="true">Sorry.  

I did not hear that.  

Say refills or press 1. 

Say pharmacist or press 2.</prompt>
        <assign name="audium_vxmlLog" 
    expr="audium_vxmlLog 
   + '|||noinput$$$' + '1' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
     expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'noinput_audio_group' 
   + '^^^' + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
      </catch>
      <catch event="noinput" count="2">
        <prompt bargein="true">I am sorry. 

I still did not hear that.

If you are using a speaker phone. 

Please use the phone keypad 
   to make your selection. 

Press 1 for refills. 

Press 2 to speak to a pharmacist.</prompt>
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||noinput$$$' + '2' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'noinput_
   audio_group' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
      </catch>
      <catch event="noinput" count="3">
        <prompt bargein="true">Gee. 

Looks like we are having some trouble.</prompt>
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||noinput$$$' + '3' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||audio_group$$$' + 'noinput_
   audio_group' + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <var name="maxNoInput" expr="'yes'" />
        <submit next="/CVP/Server" method="post" 
   namelist=" audium_vxmlLog maxNoInput" />
      </catch>
      <option value="refills" dtmf="1">
   prescription</option>
      <option value="refills">refills</option>
      <option value="refills">
   prescription refills</option>
      <option value="refills">
   refill my prescription</option>
      <option value="refills">
   I want to refill my prescription</option>
      <option value="refills">
   refills please</option>
      <option value="Pharmacist" 
   dtmf="2">Pharmacist</option>
      <option value="Pharmacist">
   I want to speak to a pharmacist</option>
      <option value="Pharmacist">
   pharmacist please</option>
      <filled>
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||utterance$$$' + choice_fld$.
   utterance + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||inputmode$$$' + choice_fld$.
   inputmode + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||interpretation$$$' + choice_fld + '^^^' 
   + application.getElapsedTim
   (audium_element_start_time_millisecs)" />
        <assign name="audium_vxmlLog" 
   expr="audium_vxmlLog 
   + '|||confidence$$$' + choice_fld$.
   confidence + '^^^' 
   + application.getElapsedTime
   (audium_element_start_time_millisecs)" />
        <var name="confidence" 
   expr="choice_fld$.confidence" />
        <submit next="/CVP/Server" method="post" 
   namelist=" audium_vxmlLog confidence choice_fld" />
      </filled>
    </field>
  </form>
</vxml>

网关创建用于DTMF/语音识别的语法

网关与ASR服务器建立会话后，这些语法将发送到ASR服务器。

*Jan 18 03:34:57.523: 
   //127//AFW_:/vapp_asr_change_server:  
   asr_server=sip:asr@172.18.110.76
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option485@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" 
   root="root"><rule id="root" scope="public"> 
    prescription</rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=339, 
   Event=0x63ACCCF0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option486@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
    <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   mode="dtmf" root=
   "root"><rule id="root" scope=
   "public">1</rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP:
   /mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=340, 
   Event=0x63ACCAE8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option487@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" 
   root="root"><rule id="root" scope="public"> 
    refills</rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP
   :/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=341, 
   Event=0x63ACBC88
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option488@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" 
   root="root"><rule id="root" scope="public"> 
   prescription refills</rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=342,
   Event=0x63ACBCB0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option489@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" xml:
   lang="en-us" root="root">
   <rule id="root" scope="public"> 
    refill my prescription</rule><
/grammar>
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, 
   Count=343, Event=0x63ACBCD8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option490@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
    xml:lang="en-us" root="root">
   <rule id="root" scope="public"> 
    I want to refill my prescription
   </rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=344, 
   Event=0x63ACBD00
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option491@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
  xml:lang="en-us" 
   root="root"><rule id="root" scope="public"> 
   refills please</rule></grammar
> 
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=345, 
   Event=0x63ACBD28
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option492@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" 
   root="root"><rule id="root" 
   scope="public"> Pharmacist
   </rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=346, 
   Event=0x63ACBB20
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option493@field.grammar
*Jan 18 03:34:57.523: 
   //127//AFW_:/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: 
   //127//AFW_:/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: 
   //127//AFW_:/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   mode="dtmf" root="root">
   <rule id="root" scope=
   "public">2</rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, 
   Count=347, Event=0x63ACBD50
*Jan 18 03:34:57.523: 
   //127//AFW_:/vapp_asr_define_grammar: 
*Jan 18 03:34:57.523: 
   //127//AFW_:/vapp_asr_define_grammar:  
   grammar_id=session:
   option494@field.grammar
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" 
   root="root"><rule id="root" scope="public"> 
   I want to speak to a pharmacist
   </rule></grammar>
*Jan 18 03:34:57.523: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, 
   Count=348, Event=0x63ACBFF8
*Jan 18 03:34:57.523: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.527: //127//AFW_
   :/vapp_asr_define_grammar:  
   grammar_id=session:option495@field.grammar
*Jan 18 03:34:57.527: //127//AFW_
   :/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.527: //127//AFW_
   :/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.527: //127//AFW_
   :/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.527: //127//AFW_
   :/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" 
   root="root"><rule id="root" scope="public"> 
   pharmacist please
   </rule></grammar>

*Jan 18 03:34:57.527: 
   //-1//MRCP:/mrcp_get_ev:

   ****>Caller PC=0x61BE1F94, 
   Count=349, Event=0x63ACC048
*Jan 18 03:34:57.527: //127//AFW_
   :/vapp_asr_define_grammar: 
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   grammar_id=session:link496@document.grammar
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar xmlns="http://ww
w.w3.org/2001/06/grammar" mode="voice" 
   version="1.0" 
   root="Hotlink_02_VOICE" xml:lang="en-us">
      <rule id="Hotlink_02_VOICE" scope="public">
        <one-of>
          <item>operator</item>
          <item>agent</item>
          <item>pharmacist</item>
        </one-of>
      </rule>
    </grammar>
*Jan 18 03:34:57.527: //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=350, 
   Event=0x63ACC098
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   grammar_id=session:link497@document.grammar
*Jan 18 03:34:57.527:
   //127//AFW_:/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   remoteupdate=0
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" encoding="UTF-8"?>
   <grammar xmlns="http://ww
w.w3.org/2001/06/grammar" mode="voice" version="1.0" 
   root="Hotlink_01_VOICE" xml:lang="en-us">
      <rule id="Hotlink_01_VOICE" scope="public">
        <one-of>
          <item>operator</item>
          <item>agent</item>
          <item>pharmacist</item>
        </one-of>
      </rule>
    </grammar>
*Jan 18 03:34:57.527: 
   //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=351, 
   Event=0x63ACC0C0
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar: 
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   grammar_id=session:help@grammar
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   xml_lang=en-us
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   encoding_name=UTF-8
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar:  
   remoteupdate=1
*Jan 18 03:34:57.527: 
   //127//AFW_:/vapp_asr_define_grammar: 
   grammar=<?xml version="1.0" 
   encoding="UTF-8"?>
   <grammar version="1.0" xm
lns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" 
   root="root"><rule id="root" 
   scope="public">
   help</rule></grammar>
*Jan 18 03:34:57.527: 
   //-1//MRCP:/mrcp_get_ev:
   ****>Caller PC=0x61BE1F94, Count=352, 
   Event=0x63ACBEE0
*Jan 18 03:34:57.527: //127//AFW_:/vapp_asr: 
   grammar_id=session:option485@field.grammar
grammar_id=session:option486@field.grammar
grammar_id=session:option487@field.grammar
grammar_id=session:option488@field.grammar
grammar_id=session:option489@field.grammar
grammar_id=session:option490@field.grammar
grammar_id=session:option491@field.grammar
grammar_id=session:option492@field.grammar
grammar_id=session:option493@field.grammar
grammar_id=session:option494@field.grammar
grammar_id=session:option495@field.grammar
grammar_id=session:link496@document.grammar
grammar_id=session:link497@document.grammar
grammar_id=session:help@grammar

网关执行拨号对等体查找以与文本到语音服务器建立SIP会话

匹配出站拨号对等体6。

*Jan 18 03:34:57.527: 
   //-1/xxxxxxxxxxxx/CCAPI/ccCallSetupRequest:

   Destination Pattern=, 
   Called Number=sip:tts@172.18.110.76, 
   Digit Strip=FALSE

*Jan 18 03:34:57.527: 
   //-1/xxxxxxxxxxxx/CCAPI/ccCallSetupRequest:

   Calling Number=5555(TON=Unknown, NPI=Unknown, 
   Screening=Not Screened, 

   Presentation=Allowed),

   Called Number=sip:tts@172.18.110.76(TON=Unknown, 
   NPI=ISDN),

   Redirect Number=, Display Info=

   Account Number=, Final Destination Flag=TRUE,

   Guid=2AEE8C2A-0AFB-11D6-801C-0013803E8C8E, 
   Outgoing Dial-peer=6

*Jan 18 03:34:57.531: 
   //-1/xxxxxxxxxxxx/CCAPI/cc
   _api_display_ie_subfields:

   ccCallSetupRequest:

   cisco-username=

   ----- ccCallInfo IE subfields -----

   cisco-ani=5555

   cisco-anitype=0

   cisco-aniplan=0

   cisco-anipi=0

   cisco-anisi=0

   dest=sip:tts@172.18.110.76

   cisco-desttype=0

   cisco-destplan=1

   cisco-rdie=FFFFFFFF

   cisco-rdn=

   cisco-rdntype=-1

   cisco-rdnplan=-1

   cisco-rdnpi=-1

   cisco-rdnsi=-1

   cisco-redirectreason=-1   fwd_final_type =0

   final_redirectNumber =

   hunt_group_timeout =0

 

*Jan 18 03:34:57.531: 
    //-1/xxxxxxxxxxxx/CCAPI/
   ccIFCallSetupRequestPrivate:

   Interface=0x662CE538, Interface Type=3, 
   Destination=, Mode=0x0,

   Call Params(Calling Number=5555,
   (Calling Name=)(TON=Unknown, 
   NPI=Unknown, Screening=Not Screened, 
   Presentation=Allowed),

   Called Number=sip:tts@172.18.110.76
   (TON=Unknown, NPI=ISDN), 
   Calling Translated=FALSE,

   Subscriber Type Str=RegularLine, 
   FinalDestinationFlag=TRUE, 
   Outgoing Dial-peer=6, Call Count On=FALSE,

   Source Trkgrp Route Label=, 
   Target Trkgrp Route Label=, 
   tg_label_flag=0, Application Call Id=)

网关向TTS服务器发送SIP邀请

INVITE消息的SDP包含音频流和MRCPv2应用（语音通道）的媒体信息。

 

*Jan 18 03:34:57.531: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Sent: 

INVITE sip:tts@172.18.110.76:5060 SIP/2.0

Via: SIP/2.0/UDP 14.1.16.25:
   5060;branch=z9hG4bK931F1D

Remote-Party-ID: <sip:5555@14.1.16.25>;
   party=calling;screen=no;privacy=off

From: <sip:5555@14.1.16.25>
   ;tag=E54D43C-1EC4

To: sip:tts@172.18.110.76

Date: Fri, 18 Jan 2002 03:34:57 GMT

Call-ID: 2DCA5BEF-AFB11D6-80D3DC30
   -3585E95A@14.1.16.25

Supported: 100rel,timer,
   resource-priority,replaces

Min-SE:  1800

Cisco-Guid: 720276522-184226262
   -2149318675-2151582862

User-Agent: Cisco-SIPGateway/IOS-12.x

Allow: INVITE, OPTIONS, BYE, 
   CANCEL, ACK, PRACK, UPDATE, 
   REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER

CSeq: 101 INVITE

Max-Forwards: 70

Timestamp: 1011324897

Contact: <sip:5555@14.1.16.25:5060>

Expires: 180

Allow-Events: telephone-event

Content-Type: application/sdp

Content-Disposition: 
   session;handling=required

Content-Length: 358

 

v=0

o=CiscoSystemsSIP-GW-UserAgent 
   6021 4611 IN IP4 14.1.16.25

s=SIP Call

c=IN IP4 14.1.16.25

t=0 0

m=audio 16984 RTP/AVP 0 101

c=IN IP4 14.1.16.25

a=rtpmap:0 PCMU/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-16

a=ptime:20

a=recvonly

a=mid:1

m=application 9 TCP/MRCPv2

a=setup:active

a=connection:new

a=resource:speechsynth

a=cmid:1

网关执行拨号对等体查找以与ASR服务器建立SIP会话

匹配出站拨号对等体5。

*Jan 18 03:34:57.531: 
   //-1/xxxxxxxxxxxx/CCAPI/ccCallSetupRequest:

   Destination Pattern=, 
    Called Number=sip:asr@172.18.110.76, 
   Digit Strip=FALSE

*Jan 18 03:34:57.531: 
   //-1/xxxxxxxxxxxx/CCAPI/ccCallSetupRequest:

   Calling Number=5555(TON=Unknown, NPI=Unknown, 
   Screening=Not Screened, Presentation=Allowed),

   Called Number=sip:asr@172.18.110.76
   (TON=Unknown, NPI=ISDN),

   Redirect Number=, Display Info=

   Account Number=, Final Destination Flag=TRUE,

   Guid=2AEE8C2A-0AFB-11D6-801C-0013803E8C8E, 
   Outgoing Dial-peer=5

*Jan 18 03:34:57.531: 
    //-1/xxxxxxxxxxxx/CCAPI/cc_api
   _display_ie_subfields:

   ccCallSetupRequest:

   cisco-username=

   ----- ccCallInfo IE subfields -----

   cisco-ani=5555

   cisco-anitype=0

   cisco-aniplan=0

   cisco-anipi=0

   cisco-anisi=0

   dest=sip:asr@172.18.110.76

   cisco-desttype=0

   cisco-destplan=1

   cisco-rdie=FFFFFFFF

   cisco-rdn=

   cisco-rdntype=-1

   cisco-rdnplan=-1

   cisco-rdnpi=-1

   cisco-rdnsi=-1

   cisco-redirectreason=-1   
   fwd_final_type =0

   final_redirectNumber =

   hunt_group_timeout =0

 

*Jan 18 03:34:57.535: 
    //-1/xxxxxxxxxxxx/CCAPI
   /ccIFCallSetupRequestPrivate:

   Interface=0x662CE538, Interface Type=3, 
   Destination=, Mode=0x0,

   Call Params(Calling Number=5555,
   (Calling Name=)(TON=Unknown, 
   NPI=Unknown, Screening=Not Screened, 
   Presentation=Allowed),

   Called Number=sip:asr@172.18.110.76
   (TON=Unknown, NPI=ISDN), 
   Calling Translated=FALSE,

   Subscriber Type Str=RegularLine, 
   FinalDestinationFlag=TRUE, 
   Outgoing Dial-peer=5, Call Count On=FALSE,

   Source Trkgrp Route Label=, 
   Target Trkgrp Route Label=, 
   tg_label_flag=0, Application Call Id=)

网关向ASR服务器发送SIP邀请

SDP包含音频流DTMF中继的媒体信息。和MRCPv2应用(speechrecog channel)。

*Jan 18 03:34:57.535: 
    //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Sent: 

INVITE sip:asr@172.18.110.76:5060 SIP/2.0

Via: SIP/2.0/UDP 
   14.1.16.25:5060;branch=z9hG4bK94C0B

Remote-Party-ID: <sip:5555@14.1.16.25>;
    party=calling;screen=no;privacy=off

From: <sip:5555@14.1.16.25>;tag=E54D440-1CDB

To: sip:asr@172.18.110.76

Date: Fri, 18 Jan 2002 03:34:57 GMT

Call-ID: 2DCAF817-AFB11D6
   -80D5DC30-3585E95A@14.1.16.25

Supported: 100rel,timer,
   resource-priority,replaces

Min-SE:  1800

Cisco-Guid: 720276522-184226262-
   2149318675-2151582862

User-Agent: Cisco-SIPGateway/IOS-12.x

Allow: INVITE, OPTIONS, BYE, CANCEL, 
   ACK, PRACK, UPDATE, 
   REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER

CSeq: 101 INVITE

Max-Forwards: 70

Timestamp: 1011324897

Contact: <sip:5555@14.1.16.25:5060>

Expires: 180

Allow-Events: telephone-event

Content-Type: application/sdp

Content-Disposition: 
   session;handling=required

Content-Length: 358

 

v=0

o=CiscoSystemsSIP-GW-UserAgent 
   6805 2057 IN IP4 14.1.16.25

s=SIP Call

c=IN IP4 14.1.16.25

t=0 0

m=audio 19994 RTP/AVP 0 101

c=IN IP4 14.1.16.25

a=rtpmap:0 PCMU/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-16

a=ptime:20

a=sendonly

a=mid:1

m=application 9 TCP/MRCPv2

a=setup:active

a=connection:new

a=resource:speechrecog

a=cmid:1

网关从ASR服务器接收200 OK响应（针对SIP邀请）

  1. 音频流的G711ulaw编解码器、IP地址和RTP端口号。

  2. 此RTP流的方向属性为“recvonly”。

  3. 基于RTP-NTE的DTMF中继。

  4. 网关用于与ASR服务器建立MRCPv2会话的TCP端口号(51001)。

*Jan 18 03:34:57.559: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received: 

SIP/2.0 200 OK

Via: SIP/2.0/UDP 14.1.16.25:5060;
   branch=z9hG4bK94C0B

To: <sip:asr@172.18.110.76>;tag=a99d0500

From: <sip:5555@14.1.16.25>;tag=E54D440-1CDB

Call-ID: 2DCAF817-AFB11D6-80D5DC30-
   3585E95A@14.1.16.25

CSeq: 101 INVITE

Contact: <sip:172.18.110.76:5060>

Content-Type: application/sdp

Content-Length: 342

 

v=0

o=MRCPv2Server 3386937590 3386937590 
   IN IP4 172.18.110.76

s=SIP Call

c=IN IP4 172.18.110.76

t=3386937590 0

m=audio 10002 RTP/AVP 0 101

a=rtpmap:0 PCMU/8000

a=rtpmap:101 telephone-event/8000

a=recvonly

m=application 51001 TCP/MRCPv2 

a=connection:new

a=setup:passive

a=model:besteffort

a=channel:000023B846361276@speechrecog

网关将SIP ACK发送到ASR服务器

ASR的SIP会话在网关和ASR服务器之间建立。

*Jan 18 03:34:57.563: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Sent: 

ACK sip:172.18.110.76:5060 SIP/2.0

Via: SIP/2.0/UDP 14.1.16.25:5060;branch=z9hG4bK9520FA

From: <sip:5555@14.1.16.25>;tag=E54D440-1CDB

To: <sip:asr@172.18.110.76>;tag=a99d0500

Date: Fri, 18 Jan 2002 03:34:57 GMT

Call-ID: 2DCAF817-AFB11D6-80D5DC30-3585E95A@14.1.16.25

Max-Forwards: 70

CSeq: 101 ACK

Allow-Events: telephone-event

Content-Length: 0

网关向ASR服务器发送“DEFINE-GRAMMER”MRCP请求

此处仅显示一个请求。

MRCP/2.0 446      DEFINE-GRAMMAR  1

Channel-Identifier: 000023B846361276@speechrecog

:

Speech-Language: en-us

Content-Base: http://172.18.110.75:7000/CVP/

:

Content-Type: application/srgs+xml

Content-Id: option485@field.grammar

Content-Length: 193

 

:

<?xml version="1.0" encoding="UTF-8"?>
   <grammar version="1.0" 
   mlns="http://www.w3.org/2001/06/grammar" 
   xml:lang="en-us" root="root"

><rule id="root" scope="public"> 
   prescription</rule></grammar>

网关收到200个DEFINE-GRAMMAR请求的完整响应 

*Jan 18 03:34:57.587: //-1//MRCP:/hash_get:

   Table=mrcpv2_socket_connect_table, Key=0:

MRCP/2.0 80 1 200 COMPLETE

Channel-Identifier: 000023B846361276@speechrecog

网关从TTS服务器接收200 OK响应（针对SIP邀请）

SIP INVITE消息的SDP指定以下内容：

  1. 音频流的G711ulaw编解码器、IP地址和RTP端口号。

  2. 此RTP流的方向属性为“sendonly”。

  3. 基于RTP-NTE的DTMF中继

  4. 网关用于与TTS服务器建立MRCPv2会话的TCP端口号(51000)。 

*Jan 18 03:34:57.591: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received: 

SIP/2.0 200 OK

Via: SIP/2.0/UDP 14.1.16.25:5060;
   branch=z9hG4bK931F1D

To: <sip:tts@172.18.110.76>;tag=c1160600

From: <sip:5555@14.1.16.25>;tag=E54D43C-1EC4

Call-ID: 2DCA5BEF-AFB11D6-80D3DC30-
   3585E95A@14.1.16.25

CSeq: 101 INVITE

Contact: <sip:172.18.110.76:5060>

Content-Type: application/sdp

Content-Length: 342

 

v=0

o=MRCPv2Server 3386937590 3386937590 
   IN IP4 172.18.110.76

s=SIP Call

c=IN IP4 172.18.110.76

t=3386937590 0

m=audio 10000 RTP/AVP 0 101

a=rtpmap:0 PCMU/8000

a=rtpmap:101 telephone-event/8000

a=sendonly

m=application 51000 TCP/MRCPv2 

a=connection:new

a=setup:passive

a=model:besteffort

a=channel:000023EC46361276@speechsynth

网关向TTS服务器发送SIP ACK

在网关和TTS服务器之间建立文本到语音的SIP会话。

*Jan 18 03:34:57.595: 
   //-1/xxxxxxxxxxxx/SIP/
   Msg/ccsipDisplayMsg:

Sent: 

ACK sip:172.18.110.76:5060 SIP/2.0

Via: SIP/2.0/UDP 14.1.16.25:5060;
   branch=z9hG4bK9626BC

From: <sip:5555@14.1.16.25>;tag=E54D43C-1EC4

To: <sip:tts@172.18.110.76>;tag=c1160600

Date: Fri, 18 Jan 2002 03:34:57 GMT

Call-ID: 2DCA5BEF-AFB11D6-80D3DC30
   -3585E95A@14.1.16.25

Max-Forwards: 70

CSeq: 101 ACK

Allow-Events: telephone-event

Content-Length: 0

网关向ASR服务器发送“识别”MRCP请求 

MRCP/2.0 987      
   RECOGNIZE  15

Channel-Identifier: 
   000023B846361276@speechrecog

:

Speech-Language: en-us

Confidence-Threshold: 0.40

Sensitivity-Level: 0.50

Speed-Vs-Accuracy: 0.50

Cancel-If-Queue: false

Dtmf-Interdigit-Timeout: 10000

Dtmf-Term-Timeout: 0

Dtmf-Term-Char: #

No-Input-Timeout: 60000

N-Best-List-Length: 1

Logging-Tag: 127:127

Accept-Charset: charset: utf-8

Content-Base: 
   http://172.18.110.75:7000/CVP/

Media-Type: audio/basic

Start-Input-Timers: false

:

Content-Type: text/uri-list

Content-Length: 453

 

:

session:option485@field.grammar

session:option486@field.grammar

session:option487@field.grammar

session:option488@field.grammar

session:option489@field.grammar

session:option490@field.grammar

session:option491@field.grammar

session:option492@field.grammar

session:option493@field.grammar

session:option494@field.grammar

session:option495@field.grammar

session:link496@document.grammar

session:link497@document.grammar

session:help@grammar

ASR服务器向网关发送“正在进行”响应（用于识别请求） 

MRCP/2.0 84 15 200 IN-PROGRESS

Channel-Identifier: 
   000023B846361276@speechrecog

网关完成Welcome-1.wav媒体文件的下载

它将其存储在缓存中，并向调用方播放提示。

*Jan 18 03:35:04.335: 
   //127//HTTPC:/httpc_is_cached: 
   HTTPC_FILE_IS_CACHED

*Jan 18 03:35:04.335: //-1//HTTPC:
   /httpc_set_cache_revoke_cb: 
   Registering revoke_callback(0x61CDD948)
   +pcontext(0x63A7AAA8) for cach

ep(0x68734930)

*Jan 18 03:35:04.335: //127//AFW_:/vapp_driver: 
   evtID: 146 vapp record state: 0

 

*Jan 18 03:35:04.335: //127//AFW_:/vapp_play_done: 
   evID=146 reason=17, 
   protocol=5, status_code=0, dur=3291, rate=0

*Jan 18 03:35:04.335: //127/2AEE8C2A801C/VXML:
   /vxml_media_done:

网关向TTS服务器发送“SPEAK”MRCP请求以播放致谢提示 

MRCP/2.0 376      SPEAK  1

Channel-Identifier: 
   000023EC46361276@speechsynth

:

Kill-On-Barge-In: true

Speech-Language: en-us

Logging-Tag: 127:127

Content-Base: 
   http://172.18.110.75:7000/CVP/

:

Content-Type: application/ssml+xml

Content-Length: 123

 

:

<?xml version="1.0" encoding="UTF-8"?>
   <speak version="1.0" xml:lang="en-us"> 
   Thank you for calling Audium pharmacy.</speak>

TTS服务器发送SPEAK请求的“IN-PROGRESS”响应 

MRCP/2.0 83 1 200 IN-PROGRESS

Channel-Identifier: 
   000023EC46361276@speechsynth

TTS服务器在发出致谢提示后发送“SPEAK-COMPLETE”消息 

MRCP/2.0 141 SPEAK-COMPLETE 1 COMPLETE

Channel-Identifier: 
   000023EC46361276@speechsynth

Completion-Cause: 000 normal

Speech-Marker: ""

PSTN主叫方输入“1”以选择重新填充

网关将此数字作为RTP-NTE事件发送到ASR服务器。

*Jan 18 03:35:12.583:          
   s=DSP d=VoIP payload 0x65 ssrc 
   0x15 sequence 0x1E9B timestamp 0x2FADCC60

*Jan 18 03:35:12.583:          Pt:101    Evt:1       
   Pkt:03 00 00  <Snd>>>

*Jan 18 03:35:12.587:          
   s=DSP d=VoIP payload 0x65 ssrc 
   0x15 sequence 0x1E9C timestamp 0x2FADCC60

*Jan 18 03:35:12.587:          Pt:101    Evt:1       
   Pkt:03 00 00  <Snd>>>

*Jan 18 03:35:12.631:          
   s=DSP d=VoIP payload 0x65 ssrc 
   0x15 sequence 0x1E9E timestamp 0x2FADCC60

*Jan 18 03:35:12.631:          Pt:101    Evt:1       
    Pkt:03 01 90  <Snd>>>

*Jan 18 03:35:12.683:          
   s=DSP d=VoIP payload 0x65 ssrc 
   0x15 sequence 0x1E9F timestamp 0x2FADCC60

*Jan 18 03:35:12.683:          Pt:101    Evt:1       
   Pkt:03 03 20  <Snd>>>

*Jan 18 03:35:12.703:          
   s=DSP d=VoIP payload 0x65 ssrc 
   0x15 sequence 0x1EA0 timestamp 0x2FADCC60

*Jan 18 03:35:12.703:          Pt:101    Evt:1       
   Pkt:83 03 38  <Snd>>>

*Jan 18 03:35:12.707:          s=DSP d=VoIP payload 
   0x65 ssrc 0x15 sequence 0x1EA1 timestamp 0x2FADCC60

*Jan 18 03:35:12.707:          Pt:101    Evt:1       
   Pkt:83 03 38  <Snd>>>

*Jan 18 03:35:12.711:          s=DSP d=VoIP payload 
   0x65 ssrc 0x15 sequence 
   0x1EA2 timestamp 0x2FADCC60

*Jan 18 03:35:12.711:          Pt:101    Evt:1       
   Pkt:83 03 38  <Snd>>>

ASR服务器向网关发送“RECOGNITION-COMPLETE”消息

这会通知网关，它已识别出所请求的事件之一（本例中为数字1）。

MRCP/2.0 513 
   RECOGNITION-COMPLETE 15 COMPLETE

Channel-Identifier: 
   000023B846361276@speechrecog

Proxy-Sync-Id: 0B82553000000027

Completion-Cause: 000 success

Content-Type: application/nlsml+xml

Content-Length: 292

 

<?xml version="1.0" encoding="UTF-8"?>

<result grammar="session:option486@field.grammar">

        <interpretation grammar=
   "session:option486@field.grammar" 
   confidence="0.000000">

                <instance>

                        1

                </instance>

                <input mode="dtmf" 
   confidence="1.000000">

                        1

                </input>

        </interpretation>

</result>

VXML网关从ASR服务器接收成功识别通知

在收到此通知后，VXML网关发送VXML文档(3)的SUBMIT标记中指定的HTTP POST请求。 此POST请求通知VXML服务器数字1是由PSTN呼叫方输入的。

*Jan 18 03:35:12.863: 
   //127/2AEE8C2A801C/VXML:/vxml_vapp_bgpost:  

   url http://172.18.110.75:7000/CVP/Server 
   cachable 1 timeout 
   0 body audium_vxmlLog=%7C%7C%7Caudio
   _group$$$initial_audio_group%5E%

5E%5E4%7C%7C%7Cutterance$$$1%5E%5E%5E153
   40%7C%7C%7Cinputmode
   $$$dtmf%5E%5E%5E15344%7C%7C%7C
   interpretation$$$refills%5E%5E%5E15344%7C

%7C%7Cconfidence$$$0%5E%5E%5E15344&confidence=
   0&choice_fld=refills 
   len 258maxage -1 maxstale -1

*Jan 18 03:35:12.863: //127//AFW_:/vapp_bgpost: 
   url=http://172.18.110.75:7000/CVP/Server; 
   mime_type=application/x-www-form-urlencod

ed; len=258; iov_base=audium_vxmlLog=%7C%7C%7Caudio_
   group$$$initial_audio_group
   %5E%5E%5E4%7C%7C%7Cutterance
   $$$1%5E%5E%5E15340%7C%7C

%7Cinputmode$$$dtmf%5E%5E%5E15344%
   7C%7C%7Cinterpretation$$$refills
   %5E%5E%5E15344%7C%7C%7Cconfidence$$$0
   %5E%5E%5E15344&confidence=0&

choice_fld=refills

 

*Jan 18 03:35:12.931: 
   about to send data to the socket 3 
   : first 400 bytes of data: 

POST /CVP/Server HTTP/1.1

Host: 172.18.110.75:7000

Content-Length: 258

Content-Type: application/x-www-form-urlencoded

Cookie: $Version=0; JSESSIONID=
   BBCE0F948ADFDB720497F587A7997538; 
   $Path=/CVP

Connection: close

Accept: text/vxml, text/x-vxml, application/vxml, 
   application/x-vxml, 
   application/voicexml, application/x-voicexml, 
   text/plain, tex

t/html, audio/basic, audio/wav, multipart/form-dat

ASR识别4位处方号

ASR向IOS VXML网关发送RECOGNITION-COMPLETE MRCP消息。

MRCP/2.0 533 
   RECOGNITION-COMPLETE 21 COMPLETE

Channel-Identifier: 
   000023B846361276@speechrecog

Proxy-Sync-Id: 0B82553000000028

Completion-Cause: 000 success

Content-Type: application/nlsml+xml

Content-Length: 312

 

<?xml version="1.0" encoding="UTF-8"?>

<result grammar=
   "session:field498@field.grammar">

        <interpretation grammar=
   "session:field498@field.grammar" 
   confidence="0.738968">

                <instance>

                        1234

                </instance>

                <input mode="speech" 
   confidence="0.752155">

                        one two three four

                </input>

        </interpretation>

</result>

 

    The final VXML document sent by the 
   VXML server contains just the 
   <exit\> tag in the <form>

    This tells the Gateway to
   terminate the VXML session

VXML服务器发送的最后一个VXML文档仅包含表单中的退出标记

这将告知网关终止VXML会话

*Jan 18 03:36:07.159: 
   processing server rsp msg: 
   msg(67CA85F8)URL:
   http://172.18.110.75:7000/CVP/Server, fd(3):

*Jan 18 03:36:07.159: Request msg: 
   POST /CVP/Server HTTP/1.1

*Jan 18 03:36:07.159: 
   Message Response Code: 200

*Jan 18 03:36:07.159: 
   Message Rsp Decoded Headers:

*Jan 18 03:36:07.159: D
   ate:Mon, 30 Apr 2007 16:59:53 GMT

*Jan 18 03:36:07.159: 
   Content-Type:text/xml;charset=ISO-8859-1

*Jan 18 03:36:07.159: Connection:close

*Jan 18 03:36:07.159: Set-Cookie:
   JSESSIONID=NULL; 
   Expires=Thu, 01-Jan-1970 
   00:00:10 GMT; Path=/CVP

*Jan 18 03:36:07.159: headers:

*Jan 18 03:36:07.159: HTTP/1.1 200 OK

Server: Apache-Coyote/1.1

Set-Cookie: JSESSIONID=NULL; Expires=Thu, 
   01-Jan-1970 00:00:10 GMT; Path=/CVP

Content-Type: text/xml;charset=ISO-8859-1

Date: Mon, 30 Apr 2007 16:59:53 GMT

Connection: close

 

 

*Jan 18 03:36:07.159: body:

*Jan 18 03:36:07.159: <?xml version="1.0" 
   encoding="UTF-8"?>

<vxml version="2.0" xml:lang="en-us">

  <catch event="vxml.session.error">

    <exit />

  </catch>

  <catch event="telephone.disconnect.hangup">

    <exit />

  </catch>

  <catch event="telephone.disconnect">

    <exit />

  </catch>

  <catch event="error.unsupported.object">

    <exit />

  </catch>

  <catch event="error.unsupported.language">

    <exit />

  </catch>

  <catch event="error.unsupported.format">

    <exit />

  </catch>

  <catch event="error.unsupported.element">

    <exit />

  </catch>

  <catch event="error.unsupported.builtin">

    <exit />

  </catch>

  <catch event="error.unsupported">

    <exit />

  </catch>

  <catch event="error.semantic">

    <exit />

  </catch>

  <catch event="error.noresource">

    <exit />

  </catch>

  <catch event="error.noauthorization">

    <exit />

  </catch>

  <catch event="error.eventhandler.notfound">

    <exit />

  </catch>

  <catch event="error.connection.noroute">

    <exit />

  </catch>

  <catch event="error.connection.noresource">

    <exit />

  </catch>

  <catch event="error.connection.nolicense">

    <exit />

  </catch>

  <catch event="error.connection.noauthorization">

    <exit />

  </catch>

  <catch event="error.connection.baddestination">

    <exit />

  </catch>

  <catch event="error.condition.baddestination">

    <exit />

  </catch>

  <catch event="error.com.cisco.
   media.resource.unavailable">

    <exit />

  </catch>

  <catch event=
   "error.com.cisco.handoff.failure">

    <exit />

  </catch>

  <catch event=
   "error.com.cisco.callhandoff.failure">

    <exit />

  </catch>

  <catch event=
   "error.com.cisco.aaa.authorize.failure">

    <exit />

  </catch>

  <catch event=
   "error.com.cisco.aaa.authenticate.failure">

    <exit />

  </catch>

  <catch event="error.badfetch.https">

    <exit />

  </catch>

  <catch event="error.badfetch.http">

    <exit />

  </catch>

  <catch event="error.badfetch">

    <exit />

  </catch>

  <catch event="error">

    <exit />

  </catch>

  <catch event="disconnect.com.cisco.handoff">

    <exit />

  </catch>

  <catch event="connection.disconnect.hangup">

    <exit />

  </catch>

  <catch event="connection.disconnect">

    <exit />

  </catch>

  <form>

    <block>

      <exit />

    </block>

  </form>

</vxml>

网关终止VXML应用 

*Jan 18 03:36:14.155: 
   //127/2AEE8C2A801C/VXML:/vxml_vapp_terminate:  

   vapp_status=0 ref_count 0

*Jan 18 03:36:14.155: 
   //127//AFW_:/vapp_terminate: 

*Jan 18 03:36:14.155: //127//AFW_
   :/vapp_session_exit_event_name: 
   Exit Event vxml.session.complete

*Jan 18 03:36:14.155: 
    //127//AFW_:/AFW_M_VxmlModule_Terminate: 

*Jan 18 03:36:14.155: 
    //131/2AEE8C2A801C/CCAPI/ccCallDisconnect:

   Cause Value=16, Tag=0x0, Call Entry
   (Previous Disconnect Cause=0, 
   Disconnect Cause=0)

*Jan 18 03:36:14.155: 
    //131/2AEE8C2A801C/CCAPI/ccCallDisconnect:

   Cause Value=16, Call Entry(Responsed=TRUE, 
   Cause Value=16)

网关断开与ASR服务器建立的SIP会话 

*Jan 18 03:36:14.159: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Sent: 

BYE sip:172.18.110.76:5060 SIP/2.0

Via: SIP/2.0/UDP 14.1.16.25:
   5060;branch=z9hG4bK971131

From: <sip:5555@14.1.16.25>;tag=E54D440-1CDB

To: <sip:asr@172.18.110.76>;tag=a99d0500

Date: Fri, 18 Jan 2002 03:34:57 GMT

Call-ID: 2DCAF817-AFB11D6-80D5DC30-
   3585E95A@14.1.16.25

User-Agent: Cisco-SIPGateway/IOS-12.x

Max-Forwards: 70

Timestamp: 1011324974

CSeq: 102 BYE

Reason: Q.850;cause=16

Content-Length: 0

 

*Jan 18 03:36:14.607: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received: 

SIP/2.0 200 OK

Via: SIP/2.0/UDP 14.1.16.25:
   5060;branch=z9hG4bK971131

To: <sip:asr@172.18.110.76>;tag=a99d0500

From: <sip:5555@14.1.16.25>;tag=E54D440-1CDB

Call-ID: 2DCAF817-AFB11D6-80D5DC30-
   3585E95A@14.1.16.25

CSeq: 102 BYE

Contact: <sip:172.18.110.76:5060>

Content-Length: 0

网关断开与TTS服务器建立的SIP会话 

*Jan 18 03:36:14.159: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Sent: 

BYE sip:172.18.110.76:5060 SIP/2.0

Via: SIP/2.0/UDP 14.1.16.25:5060;branch=z9hG4bK981487

From: <sip:5555@14.1.16.25>;tag=E54D43C-1EC4

To: <sip:tts@172.18.110.76>;tag=c1160600

Date: Fri, 18 Jan 2002 03:34:57 GMT

Call-ID: 2DCA5BEF-AFB11D6-
   80D3DC30-3585E95A@14.1.16.25

User-Agent: Cisco-SIPGateway/IOS-12.x

Max-Forwards: 70

Timestamp: 1011324974

CSeq: 102 BYE

Reason: Q.850;cause=16

Content-Length: 0

 

*Jan 18 03:36:14.215: 
   //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received: 

SIP/2.0 200 OK

Via: SIP/2.0/UDP 
   14.1.16.25:5060;branch=z9hG4bK981487

To: <sip:tts@172.18.110.76>;tag=c1160600

From: <sip:5555@14.1.16.25>;tag=E54D43C-1EC4

Call-ID:
   2DCA5BEF-AFB11D6-80D3DC30-3585E95A@14.1.16.25

CSeq: 102 BYE

Contact: <sip:172.18.110.76:5060>

Content-Length: 0

网关断开ISDN端的呼叫 

*Jan 18 03:36:14.611: ISDN Se3/0:23 Q931: TX -> 
   DISCONNECT pd = 8  callref = 0x805A 

        Cause i = 0x8090 - Normal call clearing

*Jan 18 03:36:14.623: ISDN Se3/0:23 Q931: 
   RX <- RELEASE pd = 8  callref = 0x005A

*Jan 18 03:36:14.623: ISDN Se3/0:23 Q931: 
   TX -> RELEASE_COMP pd = 8  callref = 0x805A

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