A-2
Cisco SIP IP Phone Administrator Guide
Appendix A SIP Compliance with RFC 3261 Information
SIP Methods
SIP Methods
The following SIP methods are supported:
SIP Responses
Release 4.0 of the Cisco SIP IP phone supports the following SIP responses:
•
1xx Response—Information Responses, page A-2
•
2xx Response—Successful Responses, page A-3
•
3xx Response—Redirection Responses, page A-3
•
4xx Response—Request Failure Responses, page A-4
•
5xx Response—Server Failure Responses, page A-6
•
6xx Response—Global Responses, page A-7
1
xx
Response—Information Responses
Method
Supported?
Comments
INVITE
Yes
The Cisco SIP IP phone supports mid-call changes such as
putting a call on hold as signaled by a new INVITE that
contains an existing call ID.
ACK
Yes
None.
OPTIONS
Response only
BYE
Yes
CANCEL
Yes
REGISTER
Yes
The Cisco SIP IP phone supports both user and device
registration.
REFER
Yes
None.
NOTIFY
Yes
Used for REFER and remote reboot.
1
xx
Response
Supported?
Comments
100 Trying
Yes
The Cisco SIP IP phone generates this response for an
incoming INVITE. Upon receiving this response, the
phone waits for a 180 Ringing, 183 Session progress, or
200 OK response.
180 Ringing
Yes
None