Data Modem 2400: Reset Parameters Before Testing



My customer is unable to establish communications with a dial-up service or
another modem. The modem dials out, but as soon as the connection with the
other modem is made, it hangs up. The Apple ModemTest diagnostic confirms a
failure in the modem board. Since replacing the main board doesn't solve
the problem, what should I do next?

The Data Modem 2400 has many parameters that are configured through
software. Some of the finished goods units, and some of the service stock
boards, may not be configured for normal use. The current ModemTest
diagnostic test will fail any modem that has parameters other than the
default settings.

Reset the modem parameters to the default settings. Do this by pressing
the switch on the front of the modem while turning it on, or by issuing the
'AT&F' command using a terminal emulation package. The reset procedures are
documented in the owner's guide.


Published Date: Feb 18, 2012