Appendix

ISDN Cause Codes

Cause

Cause Description

Definition

Code

 

 

96

Mandatory information

The receiving equipment received a message that did not

 

element is missing

include one of the mandatory information elements. This

 

 

is usually due to a D-channel error. If this error occurs

 

 

systematically, report it to your ISDN service provider.

97

Message type nonexistent

The receiving equipment received an unrecognized message,

 

or not implemented

either because the message type was invalid or because the

 

 

message type was valid but not supported. Cause 97 is due to

 

 

either a problem the local D channel.`

98

Message incompatible with

The remote equipment received an invalid message, and

 

call state or message type

no standard cause applies. Cause 98 is usually due to a D-

 

nonexistent.

channel error. If this error occurs systematically, report it to

 

 

your ISDN service provider.

99

Information element

The remote equipment received a message that includes

 

nonexistent or not

information elements, which were not recognized. This

 

implemented

is usually due to a D-channel error. If this error occurs

 

 

systematically, report it to your ISDN service provider

100

Invalid information element

The remote equipment received a message that includes

 

contents

invalid information in the information element. This is usually

 

 

due to a D-channel error.

101

Message not compatible

The remote equipment received an unexpected message that

 

with call state

does not correspond to the current state of the connection.

 

 

This is usually due to a D-channel error.

102

Recovery on timer expiry

A timer expiry initiated an error-handling (recovery) procedure.

 

 

This problem is typically temporary.

 

 

 

111

Protocol error, unspecified

An unspecified D-channel error when no other standard cause

 

 

applies.

 

 

 

127

Interworking, unspecified

An event occurred, but the network does not provide causes

 

 

for the action that it takes. The precise problem is unknown.

 

 

 

145

ISDN layer 1 and/or 2 link

User needs to check cabling, ISDN adapter status and network

 

not established.

connections.

 

 

 

146

ISDN layer 3 connection to

A switch protocol error exists, or (in the United States or

 

the ISDN switch/network

Canada) a SPID assignment problem. There is either a switch

 

inactive.

protocol error, or (in the United States or Canada) a SPID

 

 

assignment problem.

255

ISDN command processing

The ISDN signaling code has encountered an error processing

 

error

an ISDN action. ISDN adapter busy-wait and retry.

 

 

 

Global Management System User’s Guide

Appendix

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Polycom DOC2091A manual 152

DOC2091A specifications

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