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Connection break between two Voice Gateways.

Hello!

Could you help me understand the debugs.

There debugs were turn on from two identical connection of two Voice gateways SPA8000 and Grandstream. Hardware configuration in two places the same. Calls on the place #1 going well. But on the place #2 connection break after the handset lift. The debugs in application.

Best regards

 

1 REPLY
Cisco Employee

Hi Olzhas1986, In working

Hi

In working call call negotiates on G729 , In non working call "Linksys/SPA8000-5.1.10" sends G711 in SDP don't send G729 which seem to be the culprit. Involve Linksys/SPA8000 guys to find out tey send different media in SDP.

Non-Working Call SIP 200 OK
068951: Feb 24 05:50:16.770: //6170545/D3C2FF04B17D/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 200 OK
To: <sip:45815@10.28.180.10>;tag=d2cb56aeb5b27dfi0
From: "46760" <sip:46760@172.25.128.1>;tag=5A633D58-1F8
Call-ID: D3C56FA4-BB1F11E4-B1838105-1FF57314@172.25.128.1
CSeq: 101 INVITE
Via: SIP/2.0/UDP 172.25.128.1:5060;branch=z9hG4bK1FBCC41F0B
Timestamp: 1424757009
Contact: 45815 <sip:45815@10.28.180.10:5160>
Server: Linksys/SPA8000-5.1.10
Remote-Party-ID: 45815 <sip:45815@172.25.128.1>;screen=yes;party=called
Content-Length: 255
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: x-sipura, replaces
Content-Type: application/sdp

v=0
o=- 7867446 7867446 IN IP4 10.28.180.10
s=-
c=IN IP4 10.28.180.10
t=0 0
m=audio 17396 RTP/AVP 0 100 101
a=rtpmap:0 PCMU/8000
a=rtpmap:100 NSE/8000
a=fmtp:100 192-193
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv

Working Call SIP 200 OK

062374: Feb 24 05:47:34.927: //6170060/769B70D9ADB7/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 200 OK
To: <sip:44391@10.28.150.245>;tag=9ed649aa70fe5697i1
From: "46760" <sip:46760@172.25.128.1>;tag=5A60DAD4-23BC
Call-ID: 769D4551-BB1F11E4-ADBD8105-1FF57314@172.25.128.1
CSeq: 101 INVITE
Via: SIP/2.0/UDP 172.25.128.1:5060;branch=z9hG4bK1FBC45111A
Timestamp: 1424756853
Contact: 44391 <sip:44391@10.28.150.245:5060>
Server: Linksys/SPA8000-5.1.10
Remote-Party-ID: 44391 <sip:44391@172.25.128.1>;screen=yes;party=called
Content-Length: 281
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: x-sipura, replaces
Content-Type: application/sdp
v=0
o=- 1044922 1044922 IN IP4 10.28.150.245
s=-
c=IN IP4 10.28.150.245
t=0 0
 --More--         
m=audio 18452 RTP/AVP 18 100 101
a=rtpmap:18 G729a/8000
a=fmtp:18 annexb=no
a=rtpmap:100 NSE/8000
a=fmtp:100 192-193
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv

Further you may gather below logs

==show o/p==

++ show tech

++ show tech voice

== enable IEC ==

config t

voice iec syslog

==debugs==

debug ccsip messages

debug voice ccapi inout

 

show log

HTH,

Regards,

Mohammed Noor

 

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