Polycom ViewStation SP128 User Manual page 173

Appendix C
© Polycom, Inc.
Code Cause
42 Switching
equipment
congestion
43 Access information
discarded
44 Requested
circuit/channel not
available
47 Resource
unavailable,
unspecified
49 Quality of service
unavailable
50 Requested facility
not subscribed
57 Bearer capability
not authorized
58 Bearer capability
not presently
available
63 Service or option
not available,
unspecified
65 Bearer capability
not implemented
66 Channel type not
implemented
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
The network switching equipment is
temporarily overloaded and the destination
can not be reached.
The requested access information can not
be provided by the network.
An unknown reason prevents the remote
equipment from providing the requested
channel. This might be a temporary
problem.
An unknown reason prevents the remote
equipment from providing the requested
channel. This might be a temporary
problem.
The network can not provide the requested
quality of service (as defined by CCITT
recommendation X.213). This might be a
subscription problem.
The remote equipment supports the
requested supplementary service, but only
by subscription.
The caller has requested a bearer
capability that the network can provide, but
the user is not authorized to use. This might
be a subscription problem.
The network normally provides the
requested bearer capability, but not at the
present time. This might be due to a
temporary network problem or to a
subscription problem.
An unspecified reason prevents the
network or remote equipment from
providing the requested service option.
This might be a subscription problem.
The network cannot provide the bearer
capability requested by the user.
The requested channel type is not
supported by the network or the destination
equipment.
The supplementary service is not
supported by remote equipment.
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.
155
ISDN Information
Definition
ViewStation SP User Guide