Polycom SoundStation2 EX, FX, VS4000 Integrator's Reference Manual page 127

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Table 6-7. ISDN Call Status Codes (Continued)
Code Cause
69 Requested
facility not
implemented
70 Only restricted
digital
information
bearer is
available
79 Service or
option not
available,
unspecified
81 Invalid call
reference value
82 Identified
channel does
not exist
83 A suspended
call exists but
this call identity
does not
84 Call identity in
use
85 No call
suspended
86 Call having
requested call
identity has
been cleared
88 Incompatible
destination
Chapter 6 - Testing and Troubleshooting
Definition
The remote equipment is not capable of
providing the requested supplementary
service.
The network is unable to provide
unrestricted digital information over bearer
capability.
The network or remote equipment is unable
to provided the requested service option for
an unspecified reason. This might be a
subscription problem.
The remote equipment received a call with a
call reference that is not currently in use on
the user-network interface.
The receiving equipment is requested to use
a channel that is not activated on the
interface for calls.
The network received a call resume request
that contained a call identity information
element that does not match any suspended
call.
The network received a call suspend
request that contained a call identity
information element for a call that is already
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.
The network received a call resume request
containing a call identity information
element for a call that was cleared while
suspended, either by timeout or by the
remote user.
Indicates that an attempt was made to
connect to non-ISDN equipment, such as an
analog line.
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