3Xx Response-Redirection Responses; 4Xx Response-Request Failure Responses - Cisco 7960 Administrator's Manual

Appendix A SIP Compliance with RFC-2543 Information
3xx Response—Redirection Responses
3xx Response
300 Multiple
Choices
301 Moved
Permanently
302 Moved
Temporarily
305 Use Proxy
380 Alternate
Service
4xx Response—Request Failure Responses
4xx Response
400 Bad Request
78-10497-02
Supported Comments
Yes
None
Yes
Yes The Cisco SIP IP phone does not
generate this response at this time. Upon
receiving this response, the phone sends
an INVITE containing the contact
information received in the 302 Moved
temporarily response.
Yes The phone does not generate these
responses. The gateway contacts the new
Yes
address in the Contact header field.
Supported? Comments
Yes The phone generates a 400 Bad Request
response for a erroneous request. For an
incoming response, the phone initiates a
graceful call disconnect (during which
the caller hears a busy or fast busy tone)
before clearing the call request.
Cisco SIP IP Phone 7960 Administrator Guide
SIP Responses
A-5