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D-8 Reference Guide
Cause No. 82: identified channel does not exist. This cause
indicates that the equipment sending this cause has received a
request to use a channel not activated on the interface for a call.
For example, if a user has subscribed to those channels on a
primary rate interface numbered from 1 to 12 and the user
equipment or the network attempts to use channels 13 through 23,
this cause is generated.
Cause No. 83: a suspended call exists, but this call identify does
not. This cause indicates that a call resume has been attempted
with a call identity which differs from that in use for any presently
suspended call(s).
Cause No. 84: call identity in use. This cause indicates that the
network has received a call suspend request. The call suspend
request contained a call identity (including the null call identity)
which is already in use for a suspended call within the domain of
interfaces over which the call might be resumed.
Cause No. 85: no call suspended. This call indicates that the
network has received a call resume request. The call resume
request contained a call identity information element that presently
does not indicate any suspended call within the domain interfaces
over which calls may be resumed.
Cause No. 86: call having the requested call identity has been
cleared. This cause indicates that the network has received a call
resume request. The call resume request contained a call identity
information element that once indicated a suspended call; however,
that suspended call was cleared while suspended (either by network
timeout or by remote user).
Cause No. 88: incompatible destination. This cause indicates that
the equipment sending this cause has received a request to
establish a call that has a low layer compatibility, high layer
compatibility, or other compatibility attributes (e.g., data rate) that
cannot be accommodated.
Cause No. 91: invalid transit network selection. This cause
indicates that a transit network identification of an incorrect format
as defined in Annex C/Q.931 was received.