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Dial command modifiers:
L—Links a phone number to
another number to be dialed as an
alternate.
P—Sets pulse-dialing mode.
S=m—Dial number stored at
memory location m.
T—Sets tone-dialing mode.
W or : (colon)—Pause for 2
seconds.
, (comma)—Pause for 2 seconds.
; (semicolon)—Return to
command state after dialing.
@—Wait for silence.
! (exclamation)—Flash hook
With few exceptions, dial
command modifiers will function
only if they are used in a command
line with the D command or
included in a stored number. A
carriage return of period must be
used at the end of a dial string. An
example of a command line with
two dial modifiers is:
AT DT 9,555-1212
The modifier T instructs the
modem to tone dial, and the
comma instructs it to pause after
dialing 9 before dialing the
remaining digits.
CHAPTER 5: Hayes Emulation Mode
MISSING PARAMETER. A
missing parameter is interpreted
as a zero. For example, the E
command (echo) can be sent as
either E0 or E1, but if an E alone
is sent, the modem will interpret it
as if an E0 was sent.
COMMAND BUFFER. The
command buffer can hold a
maximum of 40 characters. If
the command line exceeds 40
characters, the modem refuses
to execute any portion of the
command line and sends an error
message. The AT at the beginning
of the command line, control
characters, and spaces do not take
up space in the command buffer.
Punctuation (except for spaces)
does take up space in the
command buffer.
5.2 Result Codes
Result codes (Table 5-2) are
messages sent by the modem to the
DTE monitor in response to your
commands. Result code options
are selected using the V and X
commands, as explained below.
Result codes may be words (V1
command) or digits (V0). Word
codes are preceded and followed
by a carriage return, line feed
sequence. Digit codes are only
followed by a carriage return.
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