Polycom VSX Series manual If this error occurs systematically, report it to your

Administrator’s Guide for the VSX Series

Code	Cause	Definition
86	Call having	The network received a call resume request
	requested call	containing a call identity information element for a
	identity has been	call that was cleared while suspended, either by
	cleared	timeout or by the 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
	network specified	through 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
	information element	include one of the mandatory information
	is missing	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	The equipment received a message of a type that
	nonexistent or not	is invalid or not supported. This code indicates
	implemented	either a problem with the remote configuration or a
		problem with the local D channel.
98	Message	The equipment received a message that is not
	incompatible with	valid in the current call state. Cause 98 is usually
	call state or	due to a D-channel error. If this error occurs
	message type	systematically, report it to your ISDN service
	nonexistent	provider.
99	Information element	The equipment received a message that includes
	nonexistent or not	information elements which were not recognized.
	implemented	This is usually due to a D-channel error. If this
		error occurs systematically, report it to your ISDN
		service provider.
100	Invalid information	The equipment received a message that includes
	element contents	invalid information in the information element. This
		is usually due to a D-channel error.
101	Message not	The remote equipment received a message that
	compatible with call	does not correspond to the current state of the
	state	connection. This is usually due to a D-channel
		error.
102	Recovery on timer	A time-out has triggered an error-handling
	expiry	(recovery) procedure. This problem is typically
		temporary.
111	Protocol error,	An unspecified D-channel error when no other
	unspecified	standard cause applies.

Appendix - 14