簡介
本文描述如何配置思科統一邊界元素(CUBE),使其在ITSP通知不支援影片編解碼器作為INVITE消息的一部分並且整合通過會話發起協定(SIP)完成時,不將影片編解碼器轉發到IP電話服務提供商(ITSP)。
必要條件
需求
思科建議您瞭解以下主題:
- Cisco WebEx Calling(前身為BroadCloud)
- 思科整合邊界元件(CUBE)
採用元件
本文中的資訊係根據以下軟體和硬體版本:
- 思科雲端服務路由器1000V
- Cisco Internetwork Operating System(Cisco IOS® XE)17.03.04a
本文中的資訊是根據特定實驗室環境內的裝置所建立。文中使用到的所有裝置皆從已清除(預設)的組態來啟動。如果您的網路運作中,請確保您瞭解任何指令可能造成的影響。
背景資訊
假設WebEx Calling、本地網關(LGW)和ITSP之間的整合已啟動並正常運行。
設定
步驟 1.對裝置配置模式的訪問:
device# configure terminal
步驟 2.導航到語音服務voip配置模式:
device(config)# voice service voip
步驟 3.導覽至sip子組態模式:
device(conf-voi-serv)# sip
步驟 4.在sip子配置模式下啟用audio forced功能:
device(conf-serv-sip)# audio forced
驗證
要驗證沒有向ITSP傳送影片編解碼器,可以啟用此調試以檢查向ITSP提供的INVITE:
device# debug ccsip messages
舉例來說:
device# debug ccsip messages
Received:
INVITE sip:123456@X.X.X.X:5061;transport=tls;dtg=XXXXX SIP/2.0
Via:SIP/2.0/TLS X.X.X.X:8934;
From:"Caller"<sip:987654@X.X.X.X;user=phone>;tag=1396950124-1643195813910-
To:<sip:123456@25105600.eu10.bcld.webex.com;user=phone>
Call-ID:SSE111653910260122-2086314723@X.X.X.X
CSeq:100 INVITE
Contact:<sip:X.X.X.X:8934;transport=tls>
P-Asserted-Identity:"Caller"<sip:123456@X.X.X.X;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Recv-Info:x-broadworks-client-session-info
X-Cisco-Region-ID:eu
X-Cisco-Org-Id:4b11285e-4879-4ed3-bfe7-331ea8affabe
X-BroadWorks-Correlation-Info:bfaffbad-7d4c-42ad-8a7f-7e74c1db8a1d
Accept:application/media_control+xml,application/sdp,multipart/mixed
Supported:
Max-Forwards:69
Session-ID:86acc1810080432799428436deb94327;remote=00000000000000000000000000000000
Content-Type:application/sdp
Content-Length:1241
v=0
o=Agent IN IP4 X.X.X.X
s=-
c=IN IP4 X.X.X.X
b=AS:4064
t=0 0
m=audio 36796 RTP/SAVP 99 9 8 0 18 101 108
b=TIAS:64000
a=rtpmap:99 opus/48000/2
a=fmtp:99 maxplaybackrate=16000;sprop-maxcapturerate=16000;maxaveragebitrate=64000;stereo=0;sprop-stereo=0;usedtx=0
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:108 telephone-event/48000
a=fmtp:108 0-15
a=ptime:20
a=sendrecv
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
a=video 36840 RTP/SAVP 112 111 110
b=TIAS:4000000
a=rtpmap:112 H264/90000
a=fmtp:112 profile-level-id=640c16;packetization-mode=1;max-fs=3600;max-mbps=108000
a=rtpmap:111 H264/90000
a=fmtp:111 profile-level-id=428016;packetization-mode=1;max-fs=3600;max-mbps=108000
a=rtpmap:110 H264/90000
a=fmtp:110 profile-level-id=428016;packetization-mode=0;max-fs=3600;max-mbps=108000
a=imageattr:* recv [x=800,y=480,q=0.60] [x=1280,y=720,q=0.50]
a=rtcp-fb:* nack pli
a=rtcp-fb:* ccm fir
a=rtcp-fb:* ccm tmmbr
a=sendrecv
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Sent:
INVITE sip:123456@X.X.X.X:5061;transport=tls;dtg=XXXXX SIP/2.0
Via:SIP/2.0/UDP X.X.X.X:8934;
From:"Caller"<sip:987654@X.X.X.X>;tag=AC42468-22E3
To:<sip:123456@25105600.eu10.bcld.webex.com>;tag=soos4o7b
Call-ID:726BDDE6-7DCE11EC-BC5BC09B-9E9BA404@X.X.X.X
CSeq:100 INVITE
Contact:<sip:X.X.X.X:8934;transport=udp>
P-Asserted-Identity:"Caller"<sip:123456@X.X.X.X;user=phone>
Privacy:none
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Accept:application/media_control+xml,application/sdp,multipart/mixed
Supported:
Max-Forwards:69
Session-ID:86acc1810080432799428436deb94327;remote=00000000000000000000000000000000
Content-Type:application/sdp
Content-Length:1241
v=0
o=Agent IN IP4 X.X.X.X
s=-
c=IN IP4 X.X.X.X
b=AS:4064
t=0 0
m=audio 36796 RTP/SAVP 99 9 8 0 18 101 108
b=TIAS:64000
a=rtpmap:99 opus/48000/2
a=fmtp:99 maxplaybackrate=16000;sprop-maxcapturerate=16000;maxaveragebitrate=64000;stereo=0;sprop-stereo=0;usedtx=0
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:108 telephone-event/48000
a=fmtp:108 0-15
a=ptime:20
a=sendrecv
疑難排解
目前尚無適用於此組態的具體資訊。