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Reference Guide for the Model RT210/RT211 ISDN Routers
The Trace Window cannot be accessed by more than one "manager" (built-in interface) at a time.
An example of multiple accessing is connecting at the same time by a serial connection and by
Telnet, or connecting at the same time with two Telnet calls. When you disconnect from the
built-in interface, make sure that the Window is not active, especially when you have a remotely
accessed Trace Window. Your router tries to forward the packets to the unit that originally accessed
the Trace Window.
Understanding the ISDN Clearing Codes
The ISDN call clearing codes that are returned by the network are listed in
vary depending on your service provider.
Table 5-1.
ISDN clearing codes
Reason
Description
0
Undefined
1
Unallocated (Unassigned number)
2
No route specified transit network
3
No route to destination
4
Channel unacceptable
6
Channel unacceptable
7
Call awarded and being delivered in an established channel
16
Normal call clearing
17
User busy
18
No user responding
19
No answer from user (user alerted)
21
Call rejected
22
Number changed
26
Nonselected user clearing
27
Destination out of order
28
Invalid number format
29
Facility rejected
30
Response to status enquiry
31
Normal, unspecified
34
No circuit, channel not available
5-2
Table
5-1. These codes
Troubleshooting
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Troubleshooting
