Telenetics 56 User Manual

Page 69

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AT Commands

Page 61

CARRIER message. If the modem has finished dialing, it proceeds as if the +FRH=3
command has been issued. (Refer to the +FRH command to determine how the modem
behaves following this stage.)

Dial Modifiers

The valid dial string parameters are described below. Punctuation characters may be used for
clarity, with parentheses, hyphen, and spaces being ignored.

Syntax

D<string>

Defined Values

<string> Character string corresponding to the selected option(s).

0-9

DTMF digits 0 to 9.

* The 'star' digit (tone dialing only).

# The 'gate' digit (tone dialing only).

A-D DTMF digits A, B, C, and D. Some countries may

prohibit sending of these digits during dialing

L Re-dial last number: the modem will re-dial the

last valid telephone number. The L must be
immediately after the D with all the following
characters ignored).

P Select pulse dialing: pulse dial the numbers that

follow until a "T" is encountered. Affects current
and subsequent dialing. Some countries prevent
changing dialing modes after the first digit is
dialed.

T Select tone dialing: tone dial the numbers that

follow until a "P" is encountered. Affects current
and subsequent dialing. Some countries prevent
changing dialing modes after the first digit is
dialed.

R This command will be accepted, but not acted on.

S=n Dial the number stored in the directory (n = 0 to 3).

(See &Z.)

! Flash: the modem will go on-hook for a time

defined by the value of S29. Country requirements
may limit the time imposed

W Wait for dial tone: the modem will wait for dial tone

before dialing the digits following "W". If dial tone
is not detected within the time specified by S7
(US) or S6 (W-class), the modem will abort the
rest of the sequence, return on-hook, and
generate an error message.

@ Wait for silence: the modem will wait for at least 5

seconds of silence in the call progress frequency
band before continuing with the next dial string
parameter. If the modem does not detect these 5
seconds of silence before the expiration of the call
abort timer (S7), the modem will terminate the call
attempt with a NO ANSWER message. If busy
detection is enabled, the modem may terminate
the call with the BUSY result code. If answer tone
arrives during execution of this parameter, the
modem handshakes.

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