Table79. ISDN Q.931 Cause Codes (continued)
Code Cause
82 Identifiedchannel does not exist
83 Asuspended call exists, but this call identity does not
84 Callidentity in use
85 Nocall suspended
86 Callhaving the requested call identity has been cleared
88 Incompatibledestination
91 Invalidtransit network selection
95 Invalidmessage, unspecified
96 Mandatoryinformation element is missing
97 Messagetype nonexistent or not implemented
98 Messagenot compatible with call state or message type nonexistent or not
implemented
99 Informationelement nonexistent or not implemented
100 Invalidinformation element contents
101 Messagenot compatible with call state
102 Recoveryon timer expiry
111 Protocol error, unspecified
127 Interworking,unspecified
Sample ISDN Configurations
The following topics show several typical ISDN configurations.
Frame Relay over ISDN Configuration
Figure 36shows how you can connect to a Frame Relay network through an ISDN
network. In this configuration, you set the data link on your dial circuits to Frame
Relay.
Note: Dial circuits default to point-to-point (PPP) protocol. Tochange the protocol
to Frame Relay, enter set data-link fr at the Config> prompt.A connection
will only be usable if the data link on both ends matches (for example, either
FR to FR, or PPP to PPP).
Note: N could be either an ISDN TAconnected to the FR switch, or an ISDN card
in a FR switch.
Frame
Relay
ISDN
Router 1
Router 2
N
Figure 36. Frame Relay over ISDN Configuration
Using ISDN
616 MRS V3.2 Software User’s Guide