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Este documento describe cómo funciona el flujo de llamadas de error de Cisco Customer Voice Portal (CVP).
Cisco recomienda que tenga conocimiento sobre estos temas:
La información que contiene este documento se basa en estas versiones de software:
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. Si tiene una red en vivo, asegúrese de entender el posible impacto de cualquier comando.
Cuando el servicio de supervivencia no está habilitado en CUBE o la puerta de enlace de entrada, el flujo de error de CVP invoca un cvperror.tcl configurado en la puerta de enlace de entrada/CUBE o VXML Gateway/CVVB. Este lenguaje de comandos de herramientas (TCL) se activa cuando se envía una etiqueta 929292 generada por CVP a la puerta de enlace de entrada/CUBE en un mensaje SIP 302 desplazado temporalmente o SIP REFER.
La función SIP REFER sólo se realiza cuando CVP ya ha contestado la llamada. CVP realiza una redirección cuando la llamada no se ha contestado. En este caso, envía un 302 desplazado temporalmente al iniciador de la llamada ( Puerta de enlace de entrada/CUBE ), que incluye un destino de redirección en el encabezado del contacto.
Independientemente del mensaje SIP REFER o 302 Moved Temporalmente, la tarea principal del script cvperror.tcl es reproducir un mensaje de error crítico almacenado en la memoria flash en el gateway de entrada/CUBE o VXML Gateway/CVVB.
Flujo de llamada:
Red telefónica de switch público (PSTN)
Phone 4008 (Teléfono 4008) Dials 98041 — PSTN (CUCM)—SIP—CVP—ICM— (ICM no funciona)
La supervivencia no está habilitada en CUBE
En el plan de marcación CVP, la etiqueta 929292 apunta a CUBE, como se muestra en la imagen.
Dirección IP de CUBE: 10.201.198.21
Dirección IP de CVVB: 10.201.198.26
voice service voip
no ip address trusted authenticate
allow-connections sip to sip
no supplementary-service sip refer
supplementary-service media-renegotiate
redirect ip2ip
signaling forward unconditional
sip
bind control source-interface GigabitEthernet0/0
bind media source-interface GigabitEthernet0/0
rel1xx disable
min-se 360 session-expires 360
header-passing
asymmetric payload full
midcall-signaling passthru
no call service stop
......
application
service new-call flash:bootstrap.vxml
!
service survivability flash:survivability.tcl
paramspace callfeature med-inact-det enable
param ccb id:10.201.198.21;loc:CALO;trunks:2
!
service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
!
service ringtone flash:ringtone.tcl
!
service cvperror flash:cvperror.tcl
paramspace english index 0
paramspace english language en
paramspace english location flash
paramspace english prefix en
.......
dial-peer voice 929292 voip
description CVP SIP error dial-peer
service cvperror
session protocol sipv2
session target ipv4:10.201.198.26
session transport tcp
incoming called-number 9292T
voice-class sip rel1xx disable
dtmf-relay rtp-nte h245-signal h245-alphanumeric
codec g711ulaw
no vad
Depuraciones habilitadas en el gateway: debug ccsip message y debug voip ccapi inout
--- After the error is identified on CVP, CVP sends a 302 Moved Temporaily to CUBE/Gateway
2444742: *May 2 19:30:45.956: //1575870/67C371000000/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK496B721A7
To: <sip:8041@10.201.198.7>;tag=dsa401be35
From: <sip:4008@10.201.198.18>;tag=21E92674-46A
Call-ID: AC32BE77-4D9711E8-91BCBF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1740861696-0000065536-0000000041-0315017482
Contact: <sip:92929292@10.201.198.21>
Cisco-Gucid: 67C37100000100000000002912C6C90A
Session-ID: 00000000000000000000000000000000;remote=232199a11000016357f53ee8f467d218
--- Gateway responds with ACK
Sent:
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK496B721A7
From: sip:4008@10.201.198.18;tag=21E92674-46A
To: <sip:8041@10.201.198.7>;tag=dsa401be35
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: AC32BE77-4D9711E8-91BCBF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0
-- Gateway forwards the Moved Temporarily message to the original party, in this case the PSTN (CUCM in this lab),
since the supplementary service is enabled
Sent:
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK7d54331a57
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926A0-192
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Diversion: <sip:8041@10.201.198.21>;reason=unconditional;counter=1
Contact: sip:92929292@10.201.198.21:5060
Content-Length: 0
--CUCM ACK the message---
Received:
ACK sip:98041@10.201.198.21:5060 SIP/2.0
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK7d54331a57
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926A0-192
Date: Wed, 02 May 2018 23:13:23 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
User-Agent: Cisco-CUCM11.0
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: presence, kpml
Content-Length: 0
--- Gateway received and Invite from PSTN (CUCM) related to the 929292 Error call flow
Received:
INVITE sip:92929292@10.201.198.21:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>
Date: Wed, 02 May 2018 23:13:23 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
Supported: timer,resource-priority,replaces
Min-SE: 1800
User-Agent: Cisco-CUCM11.0
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
CSeq: 102 INVITE
Diversion: <sip:8041@10.201.198.21>;reason=unconditional;counter=1
Expires: 180
Allow-Events: presence, kpml
Supported: X-cisco-srtp-fallback,X-cisco-original-called
Call-Info: <sip:10.201.198.18:5065>;method="NOTIFY;Event=telephone-event;Duration=500"
Call-Info: <urn:x-cisco-remotecc:callinfo>;x-cisco-video-traffic-class=VIDEO_UNSPECIFIED
Session-ID: a8540c82a4e44c2eba3f04ba20554953;remote=00000000000000000000000000000000
Cisco-Guid: 1740861696-0000065536-0000000041-0315017482
Session-Expires: 1800
P-Asserted-Identity: <sip:4008@10.201.198.18>
Remote-Party-ID: <sip:4008@10.201.198.18>;party=calling;screen=yes;privacy=off
Contact: <sip:4008@10.201.198.18:5065;transport=tcp>
Max-Forwards: 70
Content-Length: 0
---Match dial-peer 929292
2444797: *May 2 19:30:45.988: //-1/67C371000000/CCAPI/cc_api_call_setup_ind_common:
Interface=0x4A3A8D84, Call Info(
Calling Number=sip:4008@10.201.198.18,(Calling Name=)(TON=Unknown, NPI=Unknown, Screening=User, Passed, Presentation=Allowed),
Called Number=sip:92929292@10.201.198.21:5060(TON=Unknown, NPI=Unknown),
Calling Translated=FALSE, Subscriber Type Str=Unknown, FinalDestinationFlag=TRUE,
Incoming Dial-peer=929292, Progress Indication=NULL(0), Calling IE Present=TRUE,
Source Trkgrp Route Label=, Target Trkgrp Route Label=, CLID Transparent=FALSE), Call Id=1575871
....
....
-- Run cvperror.tcl
2444810: *May 2 19:30:45.992: //1575871/67C371000000/CCAPI/cc_process_call_setup_ind:
>>>>CCAPI handed cid 1575871 with tag 929292 to app "_ManagedAppProcess_cvperror"
-- Sent Trying and session progress to PSTN
Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 102 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Content-Length: 0
2444819: *May 2 19:30:46.000: //1575871/67C371000000/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926C0-EDA
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 102 INVITE
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
Allow-Events: telephone-event
Contact: <sip:92929292@10.201.198.21:5060;transport=tcp>
Server: Cisco-SIPGateway/IOS-12.x
Content-Length: 0
--Sent 200 OK
2444820: *May 2 19:30:46.000: //1575871/67C371000000/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926C0-EDA
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 102 INVITE
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
Allow-Events: telephone-event
Contact: <sip:92929292@10.201.198.21:5060;transport=tcp>
Supported: replaces
Supported: sdp-anat
Server: Cisco-SIPGateway/IOS-12.x
Require: timer
Session-Expires: 1800;refresher=uac
Supported: timer
Content-Type: application/sdp
Content-Disposition: session;handling=required
Content-Length: 250
v=0
o=CiscoSystemsSIP-GW-UserAgent 7410 4830 IN IP4 10.201.198.21
s=SIP Call
c=IN IP4 10.201.198.21
t=0 0
m=audio 16526 RTP/AVP 0 101
c=IN IP4 10.201.198.21
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
--Received ACK of the 200 OK message
2444823: *May 2 19:30:46.176: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:
ACK sip:92929292@10.201.198.21:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK7f4b18782f
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926C0-EDA
Date: Wed, 02 May 2018 23:13:23 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
User-Agent: Cisco-CUCM11.0
Max-Forwards: 70
CSeq: 102 ACK
Allow-Events: presence, kpml
Session-ID: a8540c82a4e44c2eba3f04ba20554953;remote=4c37a896d7446e294d24d877668cab88
Content-Type: application/sdp
Content-Length: 244
v=0
o=CiscoSystemsCCM-SIP 88 1 IN IP4 10.201.198.18
s=SIP Call
c=IN IP4 10.152.234.20
b=TIAS:64000
b=CT:64
b=AS:64
t=0 0
m=audio 23062 RTP/AVP 0 101
a=ptime:20
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
---Play critical error audio file located in flash on CUBE
En este escenario, dado que el servicio adicional movido temporalmente está habilitado de forma predeterminada, el gateway reenvía la llamada al originador, en este caso el PSTN (en el laboratorio, CUCM).
En el plan de marcación CVP, la etiqueta 929292 apunta a CUBE, como se muestra en la imagen.
Dirección IP de CUBE: 10.201.198.21
Dirección IP de CVVB: 10.201.198.26
voice service voip
no ip address trusted authenticate
allow-connections sip to sip
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
supplementary-service media-renegotiate
redirect ip2ip
signaling forward unconditional
sip
bind control source-interface GigabitEthernet0/0
bind media source-interface GigabitEthernet0/0
rel1xx disable
min-se 360 session-expires 360
header-passing
asymmetric payload full
midcall-signaling passthru
no call service stop
......
application
service new-call flash:bootstrap.vxml
!
service survivability flash:survivability.tcl
paramspace callfeature med-inact-det enable
param ccb id:10.201.198.21;loc:CALO;trunks:2
!
service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
!
service ringtone flash:ringtone.tcl
!
service cvperror flash:cvperror.tcl
paramspace english index 0
paramspace english language en
paramspace english location flash
paramspace english prefix en
.......
dial-peer voice 929292 voip
description CVP SIP error dial-peer
service cvperror
session protocol sipv2
session target ipv4:10.201.198.26
session transport tcp
incoming called-number 9292T
voice-class sip rel1xx disable
dtmf-relay rtp-nte h245-signal h245-alphanumeric
codec g711ulaw
no vad
Depuraciones habilitadas en el gateway: debug ccsip message y debug voip ccapi inout.
--- After the error is identified on CVP, CVP sends a 302 Moved Temporaily to CUBE/Gateway
2452782: *May 2 21:02:46.120: //1580163/41F099000000/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4980BDED
To: <sip:8041@10.201.198.7>;tag=ds8369f9d4
From: <sip:4008@10.201.198.18>;tag=223D6198-B66
Call-ID: 8678DF8F-4DA411E8-A286BF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1106286848-0000065536-0000000042-0315017482
Contact: <sip:92929292@10.201.198.21>
Cisco-Gucid: 41F09900000100000000002A12C6C90A
Session-ID: 00000000000000000000000000000000;remote=2375d4ec100001634a4a6be49573f76d
--- Gateway responds with ACK
Sent:
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4980BDED
From: sip:4008@10.201.198.18;tag=223D6198-B66
To: <sip:8041@10.201.198.7>;tag=ds8369f9d4
Date: Thu, 03 May 2018 01:02:46 GMT
Call-ID: 8678DF8F-4DA411E8-A286BF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0
2452813: *May 2 21:02:46.128: //1580163/41F099000000/CCAPI/cc_api_call_disconnect_done:
Disposition=0, Interface=0x4A3A8D84, Tag=0x0, Call Id=1580163,
Call Entry(Disconnect Cause=16, Voice Class Cause Code=0, Retry Count=0)
2452814: *May 2 21:02:46.128: //1580163/41F099000000/CCAPI/cc_api_call_disconnect_done:
Call Disconnect Event Sent
2452815: *May 2 21:02:46.128: //-1/xxxxxxxxxxxx/CCAPI/cc_free_feature_vsa:
2452816: *May 2 21:02:46.128: :cc_free_feature_vsa freeing 4C79B7F8
2452817: *May 2 21:02:46.128: //-1/xxxxxxxxxxxx/CCAPI/cc_free_feature_vsa:
2452818: *May 2 21:02:46.128: vsacount in free is 2
2452819: *May 2 21:02:46.132: //1580162/41F099000000/CCAPI/ccCallDisconnect:
Cause Value=16, Tag=0x0, Call Entry(Previous Disconnect Cause=0, Disconnect Cause=0)
2452820: *May 2 21:02:46.132: //1580162/41F099000000/CCAPI/ccCallDisconnect:
Cause Value=16, Call Entry(Responsed=TRUE, Cause Value=16)
2452821: *May 2 21:02:46.132: //-1/xxxxxxxxxxxx/CCAPI/ccMemPoolTDFreeHelper:
data = 4D0F39A4
2452822: *May 2 21:02:46.132: ccMemPoolTDFreeHelper:mem_mgr_mempool_free: mem_refcnt(4C6D2C38)=0 - mempool cleanup
2452823: *May 2 21:02:46.132: //1580162/41F099000000/SIP/Msg/ccsipDisplayMsg:
--Since Moved Supplementary Service is disabled, Gateway reports an error and the call is disconnected:
Sent:
SIP/2.0 500 Internal Server Error
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK817c2f8cee
From: <sip:4008@10.201.198.18>;tag=90~d18302a7-aed7-454e-85f1-89e6650073de-20554956
To: <sip:98041@10.201.198.21>;tag=223D61C8-24D1
Date: Thu, 03 May 2018 01:02:46 GMT
Call-ID: 41f09900-aea15ba3-2a-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Reason: Q.850;cause=16
Content-Length: 0
En este escenario, dado que el servicio complementario movido temporalmente se inhabilita en el gateway, el mensaje 302 Movido temporalmente no se soporta y el gateway informa un error interno al CVP.
En el plan de marcación CVP, la etiqueta 929292 apunta a CVVB como se muestra en la imagen.
Dirección IP de CUBE: 10.201.198.21
Dirección IP de CVVB: 10.201.198.26
voice service voip
no ip address trusted authenticate
allow-connections sip to sip
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
supplementary-service media-renegotiate
redirect ip2ip
signaling forward unconditional
sip
bind control source-interface GigabitEthernet0/0
bind media source-interface GigabitEthernet0/0
rel1xx disable
min-se 360 session-expires 360
header-passing
asymmetric payload full
midcall-signaling passthru
no call service stop
......
application
service new-call flash:bootstrap.vxml
!
service survivability flash:survivability.tcl
paramspace callfeature med-inact-det enable
param ccb id:10.201.198.21;loc:CALO;trunks:2
!
service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
!
service ringtone flash:ringtone.tcl
!
service cvperror flash:cvperror.tcl
paramspace english index 0
paramspace english language en
paramspace english location flash
paramspace english prefix en
.......
dial-peer voice 929292 voip
description CVP SIP error dial-peer
service cvperror
session protocol sipv2
session target ipv4:10.201.198.26
session transport tcp
incoming called-number 9292T
voice-class sip rel1xx disable
dtmf-relay rtp-nte h245-signal h245-alphanumeric
codec g711ulaw
no vad
Depuraciones habilitadas en el gateway: debug ccsip message y debug voip ccapi inout.
Same behavior as Scenario 2
Received:
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4984515FB
To: <sip:8041@10.201.198.7>;tag=ds8848a4c6
From: <sip:4008@10.201.198.18>;tag=224B0C80-11DA
Call-ID: 9C5C461D-4DA611E8-A550BF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1476352256-0000065536-0000000044-0315017482
Contact: <sip:92929292@10.201.198.26>
Cisco-Gucid: 57FF5900000100000000002C12C6C90A
Session-ID: 00000000000000000000000000000000;remote=23837fd11000016394e369cb85ba7fea
Sent:
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4984515FB
From: sip:4008@10.201.198.18;tag=224B0C80-11DA
To: <sip:8041@10.201.198.7>;tag=ds8848a4c6
Date: Thu, 03 May 2018 01:17:41 GMT
Call-ID: 9C5C461D-4DA611E8-A550BF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0
Sent:
SIP/2.0 500 Internal Server Error
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK83447b6e69
From: <sip:4008@10.201.198.18>;tag=92~d18302a7-aed7-454e-85f1-89e6650073de-20554960
To: <sip:98041@10.201.198.21>;tag=224B0CA0-E15
Date: Thu, 03 May 2018 01:17:41 GMT
Call-ID: 57ff5900-aea15f23-2c-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Reason: Q.850;cause=16
Content-Length: 0
El mismo comportamiento que la situación 2, puesto que el servicio complementario se mueve temporalmente se inhabilita en el gateway, el mensaje 302 Movido temporalmente no se soporta y el gateway informa un error interno al CVP.
En el plan de marcación CVP, la etiqueta 929292 apunta a CVVB como se muestra en la imagen.
Dirección IP de CUBE: 10.201.198.21
Dirección IP de CVVB: 10.201.198.26
voice service voip
no ip address trusted authenticate
allow-connections sip to sip
no supplementary-service sip refer
supplementary-service media-renegotiate
redirect ip2ip
signaling forward unconditional
sip
bind control source-interface GigabitEthernet0/0
bind media source-interface GigabitEthernet0/0
rel1xx disable
min-se 360 session-expires 360
header-passing
asymmetric payload full
midcall-signaling passthru
no call service stop
......
application
service new-call flash:bootstrap.vxml
!
service survivability flash:survivability.tcl
paramspace callfeature med-inact-det enable
param ccb id:10.201.198.21;loc:CALO;trunks:2
!
service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
!
service ringtone flash:ringtone.tcl
!
service cvperror flash:cvperror.tcl
paramspace english index 0
paramspace english language en
paramspace english location flash
paramspace english prefix en
.......
dial-peer voice 929292 voip
description CVP SIP error dial-peer
service cvperror
session protocol sipv2
session target ipv4:10.201.198.26
session transport tcp
incoming called-number 9292T
voice-class sip rel1xx disable
dtmf-relay rtp-nte h245-signal h245-alphanumeric
codec g711ulaw
no vad
Depuraciones habilitadas en el gateway: debug ccsip message y debug voip ccapi inout
--- After the error is identified on CVP, CVP sends a 302 Moved Temporaily to CUBE/Gateway
2455061: *May 2 21:25:10.904: //1581217/639F4F800000/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4986321AD
To: <sip:8041@10.201.198.7>;tag=ds2cb7f0a
From: <sip:4008@10.201.198.18>;tag=2251E6B8-26BC
Call-ID: A8087055-4DA711E8-A6C0BF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1671384960-0000065536-0000000046-0315017482
Contact: <sip:92929292@10.201.198.26>
Cisco-Gucid: 639F4F80000100000000002E12C6C90A
Session-ID: 00000000000000000000000000000000;remote=238a5a0d100001633384b476d5df07da
--- Gateway responds with ACK
Sent:
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4986321AD
From: sip:4008@10.201.198.18;tag=2251E6B8-26BC
To: <sip:8041@10.201.198.7>;tag=ds2cb7f0a
Date: Thu, 03 May 2018 01:25:10 GMT
Call-ID: A8087055-4DA711E8-A6C0BF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0
-- Gateway forward the Moved Temporarily message to the original party, in this case the PSTN (CUCM in this lab),
since the supplementary service is enabled
Sent:
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK852a31e4f8
From: <sip:4008@10.201.198.18>;tag=94~d18302a7-aed7-454e-85f1-89e6650073de-20554964
To: <sip:98041@10.201.198.21>;tag=2251E6D4-23B1
Date: Thu, 03 May 2018 01:25:10 GMT
Call-ID: 639f4f80-aea160e4-2e-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Diversion: <sip:8041@10.201.198.21>;reason=unconditional;counter=1
Contact: sip:92929292@10.201.198.26:5060
Content-Length: 0
---Received ACK form PSTN
Received:
ACK sip:98041@10.201.198.21:5060 SIP/2.0
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK852a31e4f8
From: <sip:4008@10.201.198.18>;tag=94~d18302a7-aed7-454e-85f1-89e6650073de-20554964
To: <sip:98041@10.201.198.21>;tag=2251E6D4-23B1
Date: Thu, 03 May 2018 01:07:48 GMT
Call-ID: 639f4f80-aea160e4-2e-12c6c90a@10.201.198.18
User-Agent: Cisco-CUCM11.0
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: presence, kpml
Content-Length: 0
At this moment the PSTN must sent a SIP Invite to the CVVB, since there is no SIP trunk between the PSTN and the CVVB,
the critical error message is not played and the call disconnects.
En este escenario, dado que el servicio adicional movido temporalmente está habilitado de forma predeterminada, el gateway reenvía la llamada al originador, en este caso el PSTN (en el laboratorio, CUCM). Sin embargo, como la PSTN no tiene un troncal SIP para CVVB, el mensaje de error crítico no se reproduce y la llamada se desconecta.
En conclusión, la puerta de enlace debe configurar y controlar la etiqueta de error 929292. No es relevante lo que ha configurado en el destino de sesión en el dial-peer entrante 929292 en el Gateway/CUBE, ya que este dial-peer no se utiliza para ningún tramo de llamada saliente.