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MOBILE LINC-UP
7.9 Autodialing
Some telephone systems will not support autodialing
(the ability to have the modem/fax dial the number
of the system you are trying to connect with). You
can perform a simple test to find out if the phone
system the Mobile Linc-Up is connected to will
support autodialing. The test is accurate for about
95% of the phone systems and is only viable in the
United States. The test is referred to as the dial-tone
timeout test (DTT) and is performed as follows:
1. Lift the telephone handset from the cradle.
Access an outside line; this may involve dialing
a prefix such as a “9” on the telephone.
2. Listen to the dial tone until it times out. The
dial tone should time out within 15 seconds.
3. After expiration of the dial tone, one of the
following should be heard:
a) Recorded Operator message: This
message will usually be “If you’d like
to make a call, please hang up and try
again...”
b) Error Tone: The error tone may sound
like a fast busy signal, an alternating
high/low tone or dead silence.
