Appendix

ISDN Cause Codes

Cause

Cause Description

Definition

Code

 

 

63

Service or option not

An unspecified reason prevents the network or remote

 

available, unspecified

equipment from providing the requested service option. This

 

 

might be a subscription problem.

65

Bearer capability not

The network cannot provide the bearer capability requested by

 

implemented

the user.

 

 

 

66

Channel type not

The network or the destination equipment does not support the

 

implemented

requested channel type.

 

 

 

69

Requested facility not

The supplementary service is not supported by remote

 

implemented

equipment.

 

 

 

70

Only restricted digital

The network is unable to provide unrestricted digital

 

information bearer is

information over bearer capability.

 

available

 

79

Service or option not

The network or remote equipment is unable to provide the

 

available, unspecified

requested service option for an unspecified reason. This might

 

 

be a subscription problem.

81

Invalid call reference

The remote equipment received a call with a call reference that

 

value

is not currently in use on the user-network interface.

 

 

 

82

Identified channel does not

The receiving equipment is requested to use a channel that is

 

exist

not activated on the interface for calls.

 

 

 

83

A suspended call exists but

The network received a call resume request. The call resume

 

this call identity does not

request contained a call identify information element that

 

 

indicates that the call identity is in use for a suspended call.

84

Call identity in use

The network received a call resume request that contained a

 

 

Call Identify information element that indicates that it is in use

 

 

for a suspended call.

85

No call suspended

The network received a call resume request when there was

 

 

not a suspended call pending. This might be a transient error

 

 

that will be resolved by successive call retries.

86

Call having requested call

The network received a call resume request. The call resume

 

identity has been cleared

request contained a call identity information element, which

 

 

once indicated a suspended call. How ever, the suspended call

 

 

was cleared either by time-out or by the remote user.

88

Incompatible destination

Indicates that an attempt was made to connect to non-ISDN

 

 

equipment. For example, to an analog line.

 

 

 

91

Invalid transit network

The ISDN exchange was asked to route the call through an

 

specified

unrecognized intermediate network.

 

 

 

95

Invalid message,

An invalid message was received, and no standard cause

 

unspecified

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

 

 

occurs systematically, report it to your ISDN service provider.

Global Management System User’s Guide

Appendix

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Polycom DOC2091A manual 151

DOC2091A specifications

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