Farallon Communications 612 - Manual (Page 104)

7-4 Netopia ISDN Modem User’s Guide
Troubleshooting tips
Before you call Farallon’s technical suppor t for assistance, check
the following:
1. The power supply is connected and the Power LED is on.
2. Press the Reset button on the Netopia ISDN Modem and
obser ve the Test LED.
During the power-up self-test, the Test LED flashes.
■ If the Test LED goes off after the test has been completed,
the test has been successful.
■ If the Test LED flashes and remains lit for more than a few
minutes, there is an internal failure. Notify Farallon that the
Netopia ISDN Modem has failed the self-test, and order a
replacement. (See the
“Farallon Technical Suppor t”
chapter for information on contacting Farallon.)
3. Verify that the ISDN cable is connected to the ISDN modem,
and make sure it is connected to the ISDN wall jack.
The Netopia ISDN Modem will not operate if connected to an
analog telephone wall jack. Make sure that the ISDN modem is
connected directly to the ISDN wall outlet without connection to
any intermediate telephone equipment (an NT1 device is not
required with this ISDN modem).
4. Make sure that the cables provided by Farallon or a Farallon
authorized reseller are in good condition and show no evidence
of wear or other physical damage.
If damage is apparent after close inspection, contact Farallon
or your reseller for replacement cables.
5. Monitor the status of the D channel LED.
■ If you are connected to a live ISDN line, the D channel LED
remains lit for up to a few minutes after the power-up
self-test, then begins to flash.
When the D channel LED flashes, it indicates that the ISDN
signal is present.