Polycom V500 manual Was not a suspended call pending. This might be a

Administrator’s Guide for the V500 System

Code	Cause	Definition
65	Bearer capability not	The network is not capable of providing the bearer
	implemented	capability requested by the user.
66	Channel type not	The requested channel type is not supported by the
	implemented	equipment sending this code.
69	Requested facility	The remote equipment is not capable of providing the
	not implemented	requested supplementary service.
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 provided
	available,	the requested service option for an unspecified reason.
	unspecified	This might be a subscription problem.
81	Invalid call reference	The remote equipment received a call with a call
	value	reference that is not currently in use on the
		user-network interface.
82	Identified channel	The receiving equipment is requested to use a channel
	does not exist	that is not activated on the interface for calls.
83	A suspended call	The network received a call resume request that
	exists but this call	contained a call identity information element that does
	identity does not	not match any suspended call.
84	Call identity in use	The network received a call suspend request that
		contained a call identity information element for a call
		that is already suspended.
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	The network received a call resume request containing
	requested call	a call identity information element for a call that was
	identity has been	cleared while suspended, either by timeout or by the
	cleared	remote user.
88	Incompatible	Indicates that an attempt was made to connect to
	destination	non-ISDN equipment, such as an analog line.
91	Invalid transit	The ISDN exchange was asked to route the call through
	network specified	an unrecognized intermediate network.
95	Invalid message,	An invalid message was received, for an unknown
	unspecified	reason. This is usually due to a D-channel error. If this
		error occurs systematically, report it to your ISDN
		service provider.
96	Mandatory	The equipment received a message that did not include
	information element	one of the mandatory information elements. This is
	is missing	usually due to a D-channel error. If this error occurs
		systematically, report it to your ISDN service provider.

Appendix - 6 www.polycom.com/videodocumentation