Polycom SIP 3.0.2 manual Following SIP request headers are supported, Header Supported

Administrator’s Guide SoundPoint IP / SoundStation IP

Header Support

Note

Method	Supported	Notes
INFO	Yes	RFC 2976, the phone does not generate INFO
		requests, but will issue a final response upon
		receipt. No INFO message bodies are parsed.
MESSAGE	Yes	Final response is sent upon receipt. Message
		bodies of type text/plain are sent and received.
UPDATE	Yes

The following SIP request headers are supported:

In the following table, a “Yes” in the Supported column means the header is sent and properly parsed.

Header	Supported	Notes
Accept	Yes
Accept-Encoding	No
Accept-Language	No
Alert-Info	Yes
Allow	Yes
Allow-Events	Yes
Authentication-Info	No
Authorization	Yes
Call-ID	Yes
Call-Info	Yes
Contact	Yes
Content-Disposition	No
Content-Encoding	No
Content-Language	No
Content-Length	Yes
Content-Type	Yes
CSeq	Yes
Date	No

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