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MODEM 32144
In response to this command, the
modem dials the telephone
number 333-1234, and then waits
for a carrier tone from the distant
modem (default wait time, 30
seconds). If the modem is able
to establish a call, it gives a
CONNECT result code, indicating
that it is on-line. If it cannot
connect, it will use a different result
code , such as NO CARRIER, BUSY,
or NO DIALTONE.
The characters that can be dialed
are 0 through 9, A, B, C, D, #, and
*.
The dial command modifiers are
listed in the preceding Command
Guidelines section.
AT D—the dial command
without a telephone number
causes the modem to pick up
the telephone line without dialing
a number.
DS—DIAL STORED NUMBER.
The DS command instructs the
modem to dial a phone number or
dial string previously stored using
the &Z command. The syntax is
DS=m, where m specifies the
memory location where the
number to be dialed will be stored.
Up to ten numbers may be stored
in memory locations 0-9. S=m may
be placed anywhere in the dial
string for example, AT D2345S=2
will dial 2345 and the number
102
stored in memory location 2.
H—TELEPHONE SWITCH
HOOK. The H command on-hook)
is used to terminate a call. (On-
hook corresponds to off-line.)
H may also be used to alternate
between voice and data
transmission during the same call
(if your communication software
supports this capability).
The H1 command (off-hook)
activates the telephone line relay,
causing a dial tone to be sent
(after a 2-second delay). For most
purposes, this command is not
necessary, since the switch hook is
automatically activated when the
modem originates or answers a call.
L—LINK. The L dial modifier is
used to link one phone number to
another so that one may be
designated as an alternate number
to be dialed if a connection cannot
be made to a primary number. The
L parameter must be used after a
phone number, and prior to a
carriage return or period. A
number is used after L to specify
;the memory address (0-9) that
contains the number to be linked
to the first number:
AT D 555-1212 L5
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