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TABLE 1
MODEM COMMANDS
COMMAND
A
A/
AT
D
0
P
R
T
Z
, (Comma)
1 (Exclamation
point)
+ 4 + (Pluses)
FUNCTION (example)
Instructs the modem to go off hook and transmit
a carrier signal so that the modem automatically
answers an incoming call. (ATA)
Repeats the last command you entered, allowing
you to redial a telephone number after receiving
a busy signal. (A/)
Prepares the modem to receive your commands
and must precede all commands except A/ and
+ + 4. (AT)
Tells the modem to dial the telephone number
that follows. (ATD5551212)
Returns you online without disconnecting the
call. (ATO)
Instructs the modem to use pulse dialing.
(ATDP5551212)
Reverses, or changes, the originate mode of
your modem to answer mode after dialing a call.
(ATDP5551212R)
Instructs the modem to use tone dialing.
(ATDT5551212)
Resets the modem to its default settings. (ATZ)
Instructs the modem to pause while dialing
(to wait for a second dial tone) allowing you to
place a call through a switchboard or PBX. '
(The default is 2 seconds, set by S register 8.)
(ATDT9.5551212)
Transfers your call to an extension number that
follows it in a dial command
(ATDT9,555121219876)
Puts you in local command mode while you are
online so you can communicate directly with
your modem without disconnecting a call.
(4 4 4)
16
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