Huawei U-SYS MRS6100 - Page 80

Technical Manual
U-SYS MRS6100 Media Resource Server
Chapter 5 MGCP and SIP
Huawei Technologies Proprietary
5-55
MRS6100AS
INVITE
100 Trying
180 Ringing
200 OK
ACK
reINVITE
Repuest
annoucement
200 OK
ACK
INFO
200 OK
BYE
200 OK
......
......
SIP
terminal
100 Trying
180 Ringing
200 OK
ACK
BYE
200 OK
RTP
reINVITE
Cancel
annoucem
ent
200 OK
ACK
INVITE
Figure 5-14 Successful call flow
Event 1: AS sends an INVITE request to MRS6100. The request contains SDP-1, the
session attribute of the remote caller SIP entity.
IINVITE sip:annc.BAU.pa%28an%3dfile%3a//welcome4%29@182.20.60.1 SIP/2.0
From: <sip:1@182.20.62.2>;tag=8000
To: sip:annc.BAU.pa%28an%3dfile%3a//welcome4%29@182.20.60.1
Contact: sip:182.20.62.2
Call-ID: 4000@182.20.62.2
CSeq: 10 INVITE