Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
OL-3410-01
AppendixD SIP Call Flows
Call Flow Scenarios for Successful Calls
5. INVITE sip:9000@192.168.2.81;user=phone SIP/2.0
Via: SIP/2.0/UDP 192.168.3.175
From: <sip:8000@192.168.2.81;user=phone>;tag=3515135869
To: <sip:9000@192.168.2.81;user=phone>
Call-ID: 557188650@192.168.3.175
CSeq: 2 INVITE
Contact: <sip:8000@192.168.3.175;user=phone;transport=udp>
User-Agent: Cisco ATA v2.12 ata186 (0928a)
Proxy-Authorization: Digest username=“8000”,realm=“CISCO”,nonce=“3bd76584”,
uri=“sip:9000@192.168.2.81”,response=“6e91de67ad976997ffac76f0398ef224”
Expires: 300
Content-Length: 253
Content-Type: application/sdp
v=0
o=8000 177738 177738 IN IP4 192.168.3.175
s=ATA186 Call
c=IN IP4 192.168.3.175
t=0 0
m=audio 10000 RTP/AVP 0 18 8 101
a=rtpmap:0 PCMU/8000/1
a=rtpmap:18 G729/8000/1
a=rtpmap:8 PCMA/8000/1
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
6. SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.3.175
Call-ID: 557188650@192.168.3.175
From: <sip:8000@192.168.2.81;user=phone>;tag=3515135869
To: <sip:9000@192.168.2.81;user=phone>
CSeq: 2 INVITE
Content-Length: 0
7. INVITE sip:9000@192.168.2.194;user=phone SIP/2.0
Record-Route: <sip:9000@192.168.2.81:5060;user=phone;maddr=192.168.2.81
Via: SIP/2.0/UDP 192.168.2.81:5060;branch=c0b3510a-819f9d1a-ea43c345-9604747f-1
Via: SIP/2.0/UDP 192.168.3.175
From: <sip:8000@192.168.2.81;user=phone>;tag=3515135869
To: <sip:9000@192.168.2.81;user=phone>
Call-ID: 557188650@192.168.3.175
CSeq: 2 INVITE
Contact: <sip:8000@192.168.3.175;user=phone;transport=udp>
User-Agent: Cisco ATA v2.12 ata186 (0928a)
Proxy-Authorization: Digest username=“8000”,realm=“CISCO”,nonce=“3bd76584”,
uri=“sip:9000@192.168.2.81”,response=“6e91de67ad976997ffac76f0398ef224”
Expires: 300
Content-Length: 253
Content-Type: application/sdp
v=0
o=8000 177738 177738 IN IP4 192.168.3.175
s=ATA186 Call
c=IN IP4 192.168.3.175
t=0 0
m=audio 10000 RTP/AVP 0 18 8 101
a=rtpmap:0 PCMU/8000/1
a=rtpmap:18 G729/8000/1
a=rtpmap:8 PCMA/8000/1
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
TableD-8 Log Listings (continued)