Polycom RealPresence 800s Administrator's Manual page 551

Table A-1
Disconnection Cause
SIP forbidden
SIP global failure 603
SIP global failure 604
SIP global failure 606
SIP gone
SIP moved permanently
SIP moved temporarily
SIP not found
SIP redirection 300
SIP redirection 305
SIP redirection 380
SIP remote cancelled call
SIP remote closed call
SIP remote stopped responding
SIP remote unreachable
SIP request terminated
SIP request timeout
Polycom, Inc.
Call Disconnection Causes (Continued)
Description
The SIP server rejected the request.
The server understood the request, but is refusing to
fulfill it.
A SIP Global Failure 603 (Decline) response was
returned.
The participant's endpoint was successfully contacted,
but the participant explicitly does not wish to or cannot
participate.
A SIP Global Failure 604 (Does Not Exist Anywhere)
response was returned.
The server has authoritative information that the user
indicated in the Request-URI does not exist anywhere.
A SIP Global Failure 606 (Not Acceptable) response
was returned.
The requested resource is no longer available at the
Server and no forwarding address is known.
The endpoint moved permanently. The user can no
longer be found at the address in the Request-URI.
The remote endpoint moved temporarily.
The endpoint was not found.
The server has definitive information that the user does
not exist at the domain specified in the Request-URI.
A SIP Redirection 300 (Multiple Choices) response was
returned.
A SIP Redirection 305 (Use Proxy) response was
returned.
The requested resource MUST be accessed through the
proxy given by the Contact field.
A SIP Redirection 380 (Alternative Service) response
was returned.
The call was not successful, but alternative services are
possible.
The endpoint canceled the call.
The endpoint ended the call.
The endpoint is not responding.
The endpoint could not be reached.
The endpoint terminated the request.
The request was terminated by a BYE or CANCEL
request.
The request was timed out.
Appendix A-Disconnection Causes
A-5