AudioCodes MP-104 User Manual

MP-1xx SIP User’s Manual 8. Gateway Capabilities Description
Version 4.4 161 March 2005
8.9.2 SIP Call Flow
The following Call Flow describes SIP messages exchanged between two MP-108 gateways
during simple call.
Phone "6000" dials "2000", sending INVITE message to Gateway 10.8.201.161
Figure
8-3: SIP Call Flow
INVITE F1
200 OK F3
Ringing F2
ACK F4
BYE F5
200 OK F6
MP-108
10.8.201.158
MP-108
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

AudioCodes MP-104 Specifications

General

Brand	AudioCodes
Model	MP-104
Category	Gateway
Language	English