ZyXEL Communications 100IH manual Problems With the Isdn Line, Troubleshooting the Isdn Line

Prestige 100 and 100IH ISDN Router and Router/Hub

11.2 Problems With the ISDN Line

Table 11-2 Troubleshooting the ISDN Line

Problem	Corrective Action
The ISDN initialization failed.	Check the error log (in menu 24.3.1), you should see a log entry for
This problem occurs when you	the ISDN initialization failure in the format, ‘ISDN init failed.
attempt to save the parameters	code<n>...’. Note the code number, n.
entered in menu 2, but receive
	If the code is 1, the ISDN link is not up. This problem could be either
the message, ‘Save successful,
	the ISDN line is not properly connected to the Prestige or the ISDN
but Failed to initialize ISDN;
	line is not activated. Verify that the ISDN line is connected to the
Press ESC to exit’.
	Prestige and to the wall telephone jack.
	If the code is 2, there is a SPID error (North America only). Check the
	SPID numbers again in menu 2, and if they are correct, initialize them
	again from menu 24.4.3.
	If the code is 3, this indicates a general failure. Verify the provisioning
	information for your switch by contacting your telephone company.
The ISDN loopback test failed.	If the ISDN initialization is successful, then the loopback test should
	also work. Verify the telephone numbers that have been entered in
	menu 2. The loopback test dials the number entered in the 2nd
	Phone # field (except for switch types with only one phone number). If
	you need to dial a prefix (e.g., ‘9’) to get an outside line, then you
	have to enter the telephone number as ‘95551212’ or
	‘914085551212’. If it is an internal line, you may only need to enter the
	last four or five digits (according to your internal dialing plan), e.g.,
	51212.

11-2 Troubleshooting