Polycom RealPresence 800s Administrator's Manual page 552

RealPresence Collaboration Server 800s Administrator's Guide
Table A-1
Disconnection Cause
SIP server error 500
SIP server error 501
SIP server error 502
SIP server error 503
SIP server error 504
SIP server error 505
SIP temporarily not available
SIP remote device did not respond in the
given time frame
SIP trans error TCP Invite
SIP transport error
SIP unauthorized
SIP unsupported media type
A-6
Call Disconnection Causes (Continued)
Description
The SIP server sent a SIP Server Error 500 (Server
Internal Error) response.
The server encountered an unexpected condition that
prevented it from fulfilling the request.
The SIP server sent a SIP Server Error 501 (Not
Implemented) response.
The server does not support the functionality required to
fulfill the request.
The SIP server sent a SIP Server Error 502 (Bad
Gateway) response.
The server, while acting as a gateway or proxy, received
an invalid response from the downstream server it
accessed in attempting to fulfill the request.
The SIP server sent a SIP Server Error 503 (Service
Unavailable) response.
The server is temporarily unable to process the request
due to a temporary overloading or maintenance of the
server.
The SIP server sent a SIP Server Error 504 (Server
Time-out) response.
The server did not receive a timely response from an
external server it accessed in attempting to process the
request.
The SIP server sent a SIP Server Error 505 (Version Not
Supported) response.
The server does not support, or refuses to support, the
SIP protocol version that was used in the request.
The participant's endpoint was contacted successfully
but the participant is currently unavailable (e.g., not
logged in or logged in such a manner as to preclude
communication with the participant).
The endpoint did not respond in the given time frame.
A SIP Invite was sent via TCP, but the endpoint was not
found.
Unable to initiate connection with the endpoint.
The request requires user authentication.
The server is refusing to service the request because
the message body of the request is in a format not
supported by the requested resource for the requested
method.
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