Cisco SIP IP Phone - SIP Responses

A-3
Cisco SIP IP Phone Administrator Guide
Appendix A SIP Compliance with RFC 3261 Information
SIP Responses
2xxResponse—Successful Responses
3xxResponse—Redirection Responses
181 Call Is Being
Forwarded
See comments The Cisco SIP IP phone does not generate these
responses,; however, the phone does receive them. The
phone processes these responses the same way that it
processes the 100 Trying response.
182 Queued
183 Session
Progress
The SIP IP phone does not generate this message. Upon
receiving this response, the phone provides early media
cut-through and then waits for a 200 OK response.
1xx Response Supported? Comments
2xx Response Supported? Comments
200 OK Yes None
202 Accepted Yes None
3xx Response Supported? Comments
300 Multiple
Choices
Yes None
301 Moved
Permanently
Yes
302 Moved
Temporarily
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.
305 Use Proxy Yes The phone does not generate these responses. The
gateway contacts the new address in the Contact
header field.
380 Alternate
Service
Yes