SIP Message Examples
....................................................................................................................................................................................................................................
This section includes example SIP messages to illustrate their format
and content. Ethernet, IP, and SCTP headers were removed to focus
on the SIP message and any encapsulated ISUP and SDP messages.
Figure 3-8 SIP INVITE
INVITE
Session Initiation Protocol
Request line: INVITE sip:2208000@10.11.3.25;transport=sctp;user=phone SIP/
2.0
Method: INVITE
Message Header
t: <sip:2208000@10.11.3.25;transport=sctp;user=phone>
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
m: <10.11.3.1:1>
Max-Forwards: 20
Accept: application/SDP, application/ISUP, multipart/mixed
MIME-Version: 1.0
c: multipart/mixed;boundary=unique-boundary-1
Allow: INVITE, ACK, BYE, CANCEL, UPDATE, INFO, OPTIONS
Require: precondition
l: 477
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
Call Flow
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3-40
Lucent Technologies 235-200-118
Issue 3.02B, March 2007
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