Appendices
Dn - Dialing
Introduction This command asks the modem to unhook, to dial the number corresponding to the dialing string entered and to attempt to establish a connection. In the absence of a dialing string, the modem unhooks and attempts to make contact in send mode.
Dialing Modifiers The valid parameters for the dialing string are described in the following table: For reasons of clarity, it is possible to use certain punctuation symbols such as brackets, hyphens or spaces. These symbols are not processed by the command.
*
#
Code
0 - 9
A - D
L
P
T
R
S = n
!
W
@
,
Description
Numbers 0 to 9 in MFDT
The "asterisk" symbol (tone dialing only)
The "hash" symbol (tone dialing only)
Letters A, B, C and D in MFDT. In certain countries, these letters cannot be sent during dialing.
Redial the last number: the modem redials the last valid telephone number.
The L must come immediately after the D and all subsequent characters are ignored.
Selects pulse dialing: pulse dialing dials the numbers which follow until a 'T' is reached. This applies to current and subsequent dialing. In certain countries, the dialing mode cannot be changed once the first number has been dialed.
Selects tone dialing: tone dialing dials the numbers which follow until a 'P' is reached. This applies to current and subsequent dialing. In certain countries, the dialing mode cannot be changed once the first number has been dialed.
This command will be accepted but it will have no effect.
Dialing of number stored in directory (n = 0 to 19) (see command &Z).
Quick hang up: the modem hangs up during the period defined by the value of
S29. In certain countries, a limit may be imposed on this period.
Waiting for tone: the modem waits for the tone before dialing the digits which come after the 'W'.
Waiting for silence: the modem waits until there are at least 5 seconds of silence in the call frequency band before dialing the dialing string. If the modem does not detect these 5 seconds of silence after a period defined by the call abandon timer (S7), the modem ends the call attempt with a NO ANSWER message. If the detection of an engaged line is validated, the modem can end the call with the result code BUSY. If the answer tone comes while this parameter is being carried out, the modem makes contact.
Dialing pause: the modem pauses for the period indicated by S8 before dialing the digits which come after the ','.
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TLX DS COM PL7 xxE
Appendices
Code
;
Description
Returns to command mode. Added to the end of the dialing string, this parameter returns the modem to command mode once it has processed the part of the string which precedes ','. This enables new AT commands to be sent while off-hook. The new AT commands can be set on the source command line after ',' or entered on new command lines. The modem does not attempt to establish the connection until the new dial command is sent without the end symbol ','. Use 'H' to abandon dialing in progress and hang up.
^
( )
<i>
Switch call tone: only applies to the dialing attempt in progress.
Ignored: can be used to format the dialing string.
Ignored: can be used to format the dialing string.
<space> Ignored: can be used to format the dialing string.
Invalid symbol: will be ignored.
TLX DS COM PL7 xxE
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