Polycom RealPresence 1800 Administration Manual page 321

Call Disconnection Causes
Disconnection Cause
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
ISDN Disconnection Causes
ISDN Disconnection Causes
Number Summary
1 Unallocated (unassigned
number)
2 No route to specified transit
network (national use)
3 No route to destination
4 Send special information
tone
5 Misdialed trunk prefix
(national use)
6 Channel Unacceptable
Polycom, Inc.
Description
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.
Description
No route to the number exists in the ISDN network or the number was
not found in the routing table.
• Ensure that the number appears in the routing table.
• Ensure that it is a valid number and that correct digits were dialed.
The route specified (transit network) between the two networks does
not exist.
No physical route to the destination number exists although the dialed
number is in the routing plan.
• The PRI D-Channel is malfunctioning.
• Incorrect connection of the span or WAN.
Return the special information tone to the calling party indicating that
the called user cannot be reached.
A trunk prefix has erroneously been included in the called user number.
The sending entity in the call does not accept the channel most
recently identified.
Disconnection Causes
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