Huawei U-SYS MRS6100 - Page 78

Technical Manual
U-SYS MRS6100 Media Resource Server
Chapter 5 MGCP and SIP
Huawei Technologies Proprietary
5-53
To:Value
Cseq:Value
Space
Via:Value
Max-Forwards:Value
Allow:Value
Contact:Value
Supported:Value
Content-Lengh:Value
Content-Type:Value
... ...
Call-ID:Value
User-Agent:Value
SDP
From:Value
Command Peer UPI Version
Start
line
Message
head
Message
body
Figure 5-13 SIP response message structure
2) Response message parameters
Refer to Section 5.3.5 1, "Request messages".
3) An example of response message
The following is an example of SIP response message encoding.
SIP/2.0 180 Ringing
From: <sip:4444@182.20.20.105>;tag=1c25759
To: <sip:dialog.vxml.digits.vxml@182.20.50.1>;tag=57a39715
CSeq: 1 INVITE
Call-ID: call-973668242-23@182.20.20.105
Via: SIP/2.0/UDP 182.20.20.105:5061
Contact: <sip:dialog.vxml.digits.vxml@182.20.50.1:5061;transport=udp>
Content-Length: 0