Appendix A: Troubleshooting A-3
Revision 1.00
StormPort 400 Modem Installation Guide
08-01137-01
Noise interference on
the extension telephone
when using the modem
Make sure the extension phone is properly filtered. If a
filter is installed, this noise could be a faulty filter, line
cord, phone service, phone, or the StormPort
400
1
Modem. While using the modem, try to eliminate
these possibilities in the following order:
8.
Turn OFF the StormPort 400 Modem. Make a call on
your extension phone and check the noise. If the
noise is gone, the modem may have a fault.
9
Exchange the line cord between the modem and the
wall jack with a known good line cord. Check the
noise. If it persists, place the known good line cord
between the modem and the phone.
10. If you have a known good spare phone, use it to
replace the suspect phone. If the noise is goes
away, the telephone is bad. If the noise persists, it
may be the StormPort 400 Modem. Contact
distributor technical support.
11. Call your phone service and ask them to check the
line for noise. If they assure you that the noise
problem is not with their equipment, check your
phone unit.
Noise interference on
the telephone
connected to the modem
The StormPort 400 Modem has a built-in filter to prevent
this. The noise could be a faulty line cord, phone, the
StormPort 400 Modem, or it could be coming from your
phone service. Try to eliminate these possibilities in the
following order:
1.
Disconnect the phone from the modem and connect
it directly to the wall jack, bypassing the modem.
Disconnect the modem from the wall jack. If the
noise is gone, you should probably solve the
problem by replacing the StormPort 400 Modem. If
the noise persists, it may be your phone service.
2.
Check your telephone line cords by exchanging
them one at a time with a known good line cord. If
you eliminate the line cords as a possibility, check
the phone unit.
3.
If you have a known good spare phone, use it to
replace the suspect phone and reconnect the
modem. A new phone may eliminate the noise. If the
noise persists, call distributor technical support.
Table A-1. Modem Troubleshooting
Problem
Troubleshooting
