ZyXEL Communications Prestige 128IMH, User Manual, Page: 128 / 142

ZyXEL Prestige 128IMH User’s Guide
Page 17-2
¿ ù » ~
!
© |¥ ¼ © w ¸ q¼ Ë ¦ ¡ ¡ C
2. If the code is
1
, the ISDN link is not up. This problem could be either the ISDN line is
not properly connected to the Prestige or the ISDN line is not activated. Verify that the
ISDN line is connected to the Prestige and to the wall telephone jack.
3. If the code is
3
, this indicates a general failure. Verify the provisioning information for
your switch by contacting your telephone company.
17.2.2. 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.
17.3. Problems with the LAN Interface
17.3.1. You can’t PING any station on the LAN
1. Check the LAN LED on the front panel of your Prestige. If it is on, then the link is up.
If it is off, then check the cable connecting the station to your Prestige.
2. Verify with your network administrator that the IP address and the IP subnet mask
configured in menu 3.2 are valid for that LAN.
17.4. Problems Connecting to a remote node or ISP
1. Check menu 24.1 to verify the ISDN status. If it indicates ‘down’ then refer to the
section on the ISDN line problems.
2. In menu 24.4.5, do a manual call to that remote node. You will see some messages
printed onto the screen. The messages show you whether the call has been connected or
not. If the call is not connected, verify the following parameters in menu 11: Pri(mary)
Phone #, Sec(ondary) Phone # and Transfer Rate.
3. If the call is connected, but the call still terminates, then there may be some kind of
negotiation problem. Verify the following parameters in menu 11: My Login, My
Password, Route, IP LAN Addr. Also verify your IP address in menu 3.2.
4. If you check the error log in menu 24.3.1, this will usually give you some logs
regarding why the call was dropped. If there is nothing in the log, the call may have