Owner`s manual
PN 88300150
4/3/01 25
It is not necessary to type a W at the beginning of the dialing command to wait for a modem
dial tone, since the modem will pause automatically.
In order for this command to work, you must first select Wait-for-Dial-Tone dialing with the X2
or X4 command, so that your modem can detect the dial tone.
; Returning to Command Mode After Dial Command Execution
A semicolon (;), when typed as the last character of a dialing command, causes the
MT2834MR to return to Command mode immediately after executing the command instead
of waiting for a carrier signal and going on-line.
For example, type ATDT5551212; to simply tone-dial the number, and do nothing afterwards
except go back into Command mode. This is useful in dialing applications where modem data
transfer is not desired, such as voice communications, or in applications involving the use of
Touch Tones as a data entry method, such as bank-by-phone.
R Reversing the Mode of Operation
In certain applications you may need to reverse the modem’s mode of operation from
originate to answer, or answer to originate, so that it answers the phone and goes into
originate mode, or dials a number and goes into answer mode. This command turns off the
reversing function with the R0 command and turn it on with the R1 command.
! Flashing On Hook
Some switchboard systems react to a momentary On Hook. An exclamation mark inserted in
the dialing command causes the modem to “flash” on hook for a half second, just as if you
had held the switch hook on a telephone set down for a half second. (The flash is 90 mSec.
on the MT2834MRK.)
For example, to flash On Hook after dialing the number 555-1234 in order to transfer to
Extension -5678, type ATDT5551234,,!5678. The commas cause a 4 second pause (just to
be safe).
@ Quiet Answer
The @ command causes the MT2834MR to wait before processing the next symbol in the
dialing string. The wait is for one or more ringbacks, followed by 5 seconds of silence. If the
time (specified by S-Register S7) passes before the rings and silence, a NO ANSWER (R)
result code is processed. The @ command is used for accessing a system that does not
provide a dial tone.
For example, ATDT5551212@7853500 causes the MT2834MR to dial the first number (555-
1212) and wait for the time specified in S-Register S7 for at least one ringback and 5 seconds
of silence. If a busy signal is detected, the MT2834MR hangs up and generates a BUSY
result code. If it does not detect 5 seconds of silence, a NO ANSWER result code is
generated after hanging up. If 5 seconds of silence is then detected, 785-3500 is dialed.
3.7.3 Phone Number Memory Commands
D...N Storing Phone Numbers
A telephone number and command line of up to sixty characters may be stored in the
MT2834MR number memory. As many as ten of these numbers may be stored. Each number
is given a name, using the codes N0 to N9.
To store a phone number, type ATD, then the number as it would be dialed along with any P,
T, R, ; or , characters, and then type N followed by the phone number’s “name,” (any number
from 0 through 9) and then hit ENTER.