User manual

AT COMMAND SET
Section 4
4-8
Copyright (C) Dataplex Pty Ltd
ATD DIAL
Parameters : Dial String
Default : None
Causes the modem to go off hook and originate a telephone call. After dialling, the modem
will wait for an answer tone from the remote modem, try to train on the incoming signal,
and go online. If the modem fails to detect an answer tone after the time in register S7 (45
seconds), the modem will return to the Local Command State and send the "NO
ANSWER" message.
The modem will dial all 10 pulse digits or 12 standard tone pairs. These digits may be
separated by spaces. Certain modifiers will effect the way the number is dialled and are
listed below. The dial string consists of telephone number digits and dial modifiers.
Acceptable dial digits are the numbers 0-9 (zero through to nine) and the symbols * # (for
tone dialling only). Acceptable dial modifiers are Nn P T and , (comma).
The DPX-213 ignores any other characters in the dial command. These can be freely used
to improve readability.
atd1234567K
is equivalent to:
atd [phone]K
.
Entering the dial string with no parameters causes the modem to try to establish a
connection without dialling any digits. This can be used in leased line Mode in conjunction
with the Answer command to make a connection.
Dial Modifiers
Dial modifiers are used with the dial command to instruct the modem to perform different
dialling features. They can be placed anywhere in the dial string.
Nn
Dial stored number where n = 0 to 9.
P
Set pulse dialling.
T
Set tone dialling.
,
Pause for time in status register S8 (Default = 2).
Nn - Dial Stored Number
The ATDN command, followed by a number from 0 to 9 instructs the modem to dial the
number stored in that memory location. The numbers are stored into the memory locations
by the AT&Z command. AT&N will display all 10 stored numbers. If n = 0 or no number is
given, the modem dials the number in location N1.