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DIGITAL
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1994-01-03
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28 lines
12-16-93
Digital Phone Systems
If a normal 'house' phone can dial on your Digital Phone system, then the
modem will also dial through it. However the modem may not recognise dial
tone. In this case use X1 or X3 in the dial prefix (ATX1DT) or the init
string. X1 will see neither dial tone nor BUSY. X3 will see the BUSY only.
If the software/fax doesn't have a place for init, change call-progress to
NONE.
There is also X2 if you have trouble with false BUSY, but can
recognise dialtone (can happen w/voice answer fax machines).
Sometimes putting a '@' at the end of the dial string helps (after the
phone number, as that waits for 5 seconds of silence after the other end
picks up the phone. (will wait for silence after a voice answer).
The modem uses only 2 wires on the phone line, the center 2 wires. A
phone which uses other wires can still get it's signals through the other
wires, even though the modem cannot see them.
If you have trouble dialing PULSE there is a command to change the
pulse make/break ratio needed in some areas (usually overseas). &P (see
your manual).
Don Hinds - Zoom Tech
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