Polycom 128, 512, MP manual ISDN Errors Continued

ISDN Information

		ISDN Errors (Continued)
Code	Cause	Definition
	No answer from user (user	The destination fails to complete the connection within the
19		prescribed time after responding to the connection request. The
	alerted)
		problem occurs at the remote end of the connection.
21	Call rejected	The destination rejects the call for an unknown reason, although
		capable of accepting the call.
22	Number changed	No system has been assigned the ISDN number used to set up the
		call. (The diagnostic field of the message may return an alternate
		address assigned to the called equipment.)
26	Non-selected user clearing	The destination rejected the call, although capable of accepting it,
		because the call was not assigned to the user.
		A signaling message can not be delivered because the interface is
27	Destination out of order	not functioning correctly, and therefore the destination can not be
		reached. This condition might be temporary, though of extended
		duration; for instance, remote equipment might be turned off.
28	Invalid number format	Destination address presented in an unrecognizable format or an
		incomplete destination address prevented the connection from
		being established.
29	Facility rejected	The network can not provide facility requested by the user.
30	Response to STATUS	The prior receipt of a status inquiry message generated the status
	ENQUIRY	message.
31	Normal, unspecified	A normal has occurred with no standard cause applying. No
		resulting action is required.
34	No circuit/channel	The call can not be taken because no appropriate channel is
	available	available to establish the connection.
		The network is not functioning correctly and this condition may
38	Network out of order	persist for an extended period. The call can not reach the
		destination and an immediate attempt to reconnect will probably
		fail.
41	Temporary failure	The network is not functioning correctly and an error occurred. The
		problem will be resolved shortly.
42	Switching equipment	The network switching equipment is temporarily overloaded and
	congestion	the destination can not be reached.
43	Access information	The requested access information can not be provided by the
	discarded	network.
44	Requested circuit/channel	An unknown reason prevents the remote equipment from providing
	not available	the requested channel. This might be a temporary problem.
47	Resource unavailable,	An unknown reason prevents the remote equipment from providing
	unspecified	the requested channel. This might be a temporary problem.
49	Quality of service	The network can not provide the requested quality of service (as
		defined by CCITT recommendation X.213). This might be a
	unavailable
		subscription problem.
50	Requested facility not	The remote equipment supports the requested supplementary
	subscribed	service, but only by subscription.

132 ViewStation User’s Guide