Снял с циски дебуг ccsip all:
...
Sent:
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 10.11.11.254:5060;rport;branch=z9hG4bK88461585
From: "1010" <sip:1010@10.01.10.82>;tag=1386591671
To: <sip:9290110@10.01.10.82>;tag=D527F800-18AA
Date: Mon, 13 Apr 2009 10:10:44 GMT
Call-ID: 99855142@10.01.10.82
Server: Cisco-SIPGateway/IOS-12.x
CSeq: 9254 INVITE
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER
Allow-Events: telephone-event
Contact: <sip:9290110@10.01.10.82:5060>
Content-Disposition: session;handling=required
Content-Type: application/sdp
Content-Length: 182
v=0
o=CiscoSystemsSIP-GW-UserAgent 6972 8613 IN IP4 10.01.10.82
s=SIP Call
c=IN IP4 10.01.10.82
t=0 0
m=audio 17036 RTP/AVP 8
c=IN IP4 10.01.10.82
a=rtpmap:8 PCMA/8000
Apr 13 10:10:48.129: %SIP-3-BADPAIR: Unexpected event 16 (SIPSPI_EV_CC_CALL_MEDIA_CHANGED) in state 11 (STATE_RECD_INVITE) substate 0 (SUBSTATE_NONE)
Далее ожидание 5 сек и:
Apr 13 10:10:53.733: %ISDN-6-CONNECT: Interface Serial0/3/0:14 is now connected to 9290110 N/A
Далее коннект с голосом в две стороны через 12 мс.
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