User`s manual

MediaPack SIP
MediaPack SIP User’s Manual 184 Document #: LTRT-65405
8.11.2 SIP Call Flow
The following Call Flow describes SIP messages exchanged between two MediaPack gateways
during simple call.
Phone ‘6000’ dials ‘2000’, sending INVITE message to Gateway 10.8.201.161
Figure
8-1: SIP Call Flow
INVITE F1
200 OK F3
Ringing F2
ACK F4
BYE F5
200 OK F6
10.8.201.158
10.8.201.161
F1 10.8.201.158 ==> 10.8.201.161 INVITE
INVITE sip:6000@10.8.201.161;user=phone SIP/2.0
Via: SIP/2.0/UDP 10.8.201.158;branch=z9hG4bKacolwbzYF
From: <sip:2000@10.8.201.158>;tag=1c3535
To: <sip:6000@10.8.201.161>
Call-ID: 2123353775377NrpL-2000--6000@10.8.201.158
CSeq: 20214 INVITE
Contact: <sip:2000@10.8.201.158;user=phone>
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
s=Phone-Call
t=0 0
o=AudiocodesGW 87943 43401 IN IP4 10.8.201.158
c=IN IP4 10.8.201.158
m=audio 6000 RTP/AVP 8 96
a=rtpmap:8 pcma/8000
a=rtpmap:96 telephone-event/8000
a=fmtp:96 0-15
a=ptime:20