Cisco Systems RFC 2543 and RFC 3261 Manual De Usuario
A-2
Cisco SIP Proxy Server Administrator Guide
Appendix A SIP Compliance
RFC 2543 and RFC 3261
RFC 2543 and RFC 3261
SIP Functions
SIP Methods
Cisco SPS supports five of the six methods used by SIP. It handles unknown methods such as
NEWMETHOD in the same manner as known methods such as OPTIONS and REFER.
NEWMETHOD in the same manner as known methods such as OPTIONS and REFER.
SIP Responses
Cisco SPS supports the following SIP responses:
•
•
•
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Table A-1
SIP Functions
Function
Supported?
Proxy server
Yes (transaction stateful, parallel forking, and
recursive)
recursive)
Redirect server
Yes
Registrar server
Yes
Table A-2
SIP Methods
Method
Supported?
Cisco SPS Action
ACK
Yes
Forwards ACK requests.
1
1.
The SPS can generate a local ACK for a non-200 OK final response to an INVITE request.
BYE
Yes
Forwards BYE requests.
CANCEL
Yes
Forwards CANCEL requests.
2
2.
The SPS can generate a local CANCEL for a pending branch when it receives a 200 OK or 6xx response from the branch.
INFO
Yes
Forwards INFO requests.
INVITE
Yes
Forwards INVITE requests.
NOTIFY
Yes
Forwards NOTIFY requests.
OPTIONS
Yes
Responds to OPTIONS requests.
REFER
Yes
Forwards REFER requests.
REGISTER
Yes
Supports both user and device registration.
SUBSCRIBE
Yes
Forwards SUBSCRIBE requests.
UPDATE
Yes
Forwards UPDATE requests.