Isdn Disconnection Causes - Polycom RealPresence 1500 Administrator's Manual

Disconnection Cause
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
Disconnection Cause
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
7 Call awarded and being
delivered in an Established
channel
8 Pre-Emption
9 Pre-Emption – Circuit
reserved for reuse
16 Normal Call Clearing
Polycom®, Inc.
Description
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.
The incoming call is being connected to a channel previously
established for similar calls.
The call has been pre-empted.
Call is being cleared in response to user request.
Call cleared normally because user hung up.
Appendix A - Disconnection Causes
925