Figure 3-9 SIP 183 SESSION PROGRESS
183 SESSION PROGRESS
Session Initiation Protocol
Status line: SIP/2.0 183 Session Progress
Status-Code: 183
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: 1 INVITE
v: SIP/2.0/SCTP 10.11.3.1:1;branch=z9hG4bK012001d.00000001
MIME-Version: 1.0
c: application/SDP
Allow: INVITE, ACK, BYE, CANCEL, UPDATE, INFO, OPTIONS
Require: precondition
l: 283
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 192.168.10.20
Connection Network Type: IN
Connection Address Type: IP4
Connection Address: 192.168.10.20
Time Description, active time (t): 0 0
Session Start Time: 0
Session Start Time: 0
Media Description, name and address (m): audio 50620 RTP/AVP 0
Media Type: audio
Media Port: 50620
Media Proto: RTP/AVP
Media Format: 0
Bandwidth Information (b): AS:64
Bandwidth Modifier: AS
Bandwidth Value: 64
Media Attribute (a): ptime:20
Media Attribute Fieldname: ptime
Media Attribute Value: 20
Media Attribute (a): rtpmap:0 PCMU/8000
Media Attribute Fieldname: rtpmap
Media Attribute Value: 0 PCMU/8000
Media Attribute (a): curr:qos local none
Media Attribute Fieldname: curr
Media Attribute Value: qos local none
Media Attribute (a): curr:qos remote none
Media Attribute Fieldname: curr
SIP Message Examples
Call Flow
....................................................................................................................................................................................................................................
235-200-118
Issue 3.02B, March 2007
Lucent Technologies
3-43
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