SIP User's Manual
Table C-3: SIP Headers (continues on pages 406 to 407)
Header Field
Response- Key
Retry- After
Route
Rseq
Session-Expires
Server
SIP-If-Match
Subject
Supported
Timestamp
To
Unsupported
User- Agent
Via
Voicemail
Warning
WWW- Authenticate
C.4
SDP Headers
The following SDP Headers are supported by the gateway:
SDP Header Element
v - Protocol version
o - Owner/ creator and session identifier
a - Attribute information
c - Connection information
d - Digit
m - Media name and transport address
s - Session information
t - Time alive header
b - Bandwidth header
u - Uri Description Header
e - Email Address header
i - Session Info Header
p - Phone number header
y - Year
Version 5.0
Supported
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Table C-4: SDP Headers
Supported
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
407
C. SIP Compliance Tables
December 2006