Media Attribute Value: qos remote none
Media Attribute (a): des:qos mandatory local sendrecv
Media Attribute Fieldname: des
Media Attribute Value: qos mandatory local sendrecv
Media Attribute (a): des:qos mandatory remote sendrecv
Media Attribute Fieldname: des
Media Attribute Value: qos mandatory remote sendrecv
Media Attribute (a): conf:qos remote sendrecv
Media Attribute Fieldname: conf
Media Attribute Value: qos remote sendrecv
Figure 3-10 SIP UPDATE
UPDATE
Session Initiation Protocol
Request line: UPDATE sip:2208000@10.11.3.25;transport=sctp;user=phone SIP/
2.0
Method: UPDATE
Message Header
t: <sip:2208000@10.11.3.25;transport=sctp;user=phone>;tag=0-04-012-40007
-17b7
f: <sip:+18152207000@10.11.3.1;transport=sctp;user=phone>;tag=0-01-012-
0000f-17b5
i: 00003047-00020039-0002307b@LABM0
CSeq: 2 UPDATE
v: SIP/2.0/SCTP 10.11.3.1:1;branch=z9hG4bK012001d.00000002
m: <10.11.3.1:1>
Max-Forwards: 20
MIME-Version: 1.0
c: application/SDP
l: 259
Session Description Protocol
Session Description Protocol Version (v): 0
Owner/Creator, Session Id (o):-00INIP4192.168.3.5
Owner Username: -
Session ID: 0
Session Version: 0
Owner Network Type: IN
Owner Address Type: IP4
Owner Address:192.168.3.5
Session Name (s): 0
Connection Information (c): IN IP4 192.168.3.5
Connection Network Type: IN
Connection Address Type: IP4
Connection Address: 192.168.3.5
Time Description, active time (t): 0 0
Session Start Time: 0
Session Start Time: 0
Media Description, name and address (m): audio 49180 RTP/AVP 0
Media Type: audio
Media Port: 49180
Media Proto: RTP/AVP
Media Format: 0
Bandwidth Information (b): AS:64
Bandwidth Modifier: AS
SIP Message Examples
Call Flow
....................................................................................................................................................................................................................................
3-44
Lucent Technologies 235-200-118
Issue 3.02B, March 2007
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