SIP messages supported by the IP

110
SIP messages supported by the IP Phone 1140E
PRACK
Yes
No support for PRACK-specific early-media negotiation scenarios
MESSAGE
Yes
UPDATE
No
SIP responses
The following SIP responses are also supported:
•
1xx Response--Information Responses
•
2xx Responses--Successful Responses
•
3xx Response--Request Failure Responses
•
4xx Response--Server Failure Responses
•
6xx Response--Global Responses
1xx Response--Information Responses
1xx Response
Send
Receive
Comments
100 Trying
Yes
Yes
The IP Phone E can generate this response for an incoming INVITE
if it has taken too long to generate a 180 response. Upon receiving this response, the IP Phone 1140E
waits fora Ringing, 183 Session
Progress, or 200 OK responses Ringing
Yes
Yes
The IP Phone E begins local ringing through the active transducer Call is being forwarded
No
Yes
See 183.
182 Queued
No
Yes
See 183.
183 Session progress
No
Yes
The IP Phone E accepts a response with SDP to allow for early-media negotiation.
SIP Firmware Release 1.1 for IP Phone E Administration
NN43113-300 Standard May Copyright © 2008, Nortel Networks

SIP responses

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