Polycom 2000/4000 manual Disconnection Cause Number Summary Description

			Polycom RMX 2000/4000 Administrator’s Guide
	Table A-2ISDN Disconnection Causes (Continued)
			Disconnection Cause
	Number	Summary	Description
8		Pre-Emption	The call has been pre-empted.
9		Pre-Emption –	Call is being cleared in response to user
		Circuit reserved	request.
		for reuse
16		Normal Call	Call cleared normally because user hung up.
		Clearing
17		User Busy	Dialed number is busy.
18		No User	The called user has not answered the call.
		Responding
19		No Answer from	Called user has received call alert, but has not
		User (User	responded within a prescribed period of time.
		Alerted)	Internal network timers may initiate this
			disconnection.
20		Subscriber	User is temporarily absent from the network - as
		Absent	when a mobile user logs off.
21		Call Rejected	Called number is either busy or has
			compatibility issues. Supplementary service
			constraints in the network may also initiate the
			disconnection.
22		Number	Same as Cause 1. The diagnostic field contains
		Changed	the new called user number. Cause 1 is used if
			the network does not support this cause value.
26		Non-Selected	The incoming call has not been assigned to the
		User Clearing	user.
27		Destination Out-	Messages cannot be sent to the destination
		of-Order	number because the span may not be active.

28Invalid Number The Type of Number (TON) is incorrect or the

Format (address	number is incomplete. Network, Unknown and
incomplete)	National numbers have different formats.

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