3Com VCX V7122 User Manual page 158

User-Agent: Audiocodes-Sip-Gateway/MP-108 FXS/v.4.20.299.410
Supported: 100rel,em
Accept-Language: en
Allow: REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO
Content-Type: application/sdp
Content-Length: 208
v=0
o=AudiocodesGW 18132 74003 IN IP4 10.8.201.108
s=Phone-Call
c=IN IP4 10.8.201.108
t=0 0
m=audio 4000 RTP/AVP 8 96
a=rtpmap:8 pcma/8000
a=rtpmap:96 telephone-event/8000
a=fmtp:96 0-15
a=ptime:20
F2 10.8.201.10 ==> 10.8.201.108 Trying
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 10.8.201.108;branch=z9hG4bKacsiJkDGd
From: <sip:8000@10.8.201.108>;tag=1c5354
To: <sip:1000@10.8.201.10>
Call-ID: 534366556655skKw-8000--1000@10.8.201.108
Server: Audiocodes-Sip-Gateway/TrunkPack 1610/v.4.20.299.412
CSeq: 18153 INVITE
Content-Length: 0
F3 10.8.201.10 ==> 10.8.201.108 180 Ringing
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 10.8.201.108;branch=z9hG4bKacsiJkDGd
From: <sip:8000@10.8.201.108>;tag=1c5354
To: <sip:1000@10.8.201.10>;tag=1c7345
Call-ID: 534366556655skKw-8000--1000@10.8.201.108
Server: Audiocodes-Sip-Gateway/TrunkPack 1610/v.4.20.299.412
CSeq: 18153 INVITE
Supported: 100rel,em
Content-Length: 0
Phone "1000" answers the call, and sends "200 OK" message to MP gateway
10.8.201.108.
F4 10.8.201.10 ==> 10.8.201.108 200 OK
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.8.201.108;branch=z9hG4bKacsiJkDGd
From: <sip:8000@10.8.201.108>;tag=1c5354
To: <sip:1000@10.8.201.10>;tag=1c7345
Call-ID: 534366556655skKw-8000--1000@10.8.201.108
CSeq: 18153 INVITE
Contact: <sip:1000@10.8.201.10;user=phone>
Server: Audiocodes-Sip-Gateway/TrunkPack 1610/v.4.20.299.412
Supported: 100rel,em
Allow: REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO
158 3Com VCX V7122 SIP VoIP Gateway User Manual