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COMSPHERE 3800 Series Modems – Model 3830
4-8 August 1998 3830-A2-GB91-30
Table 4-2
(2 of 23)
Model 3830 AT Commands
D
n
Dial
Begins the dialing sequence. The dial string
n
(modifiers and telephone
number) is entered after the D command.
Any digit 0–9, * , # , A, B, C, D, may be dialed as a DTMF tone. Only the
digits 0–9 can be dialed in Pulse Dial mode.
The following example shows how to dial through a PBX. The dial string
consists of the command string and the telephone number:
ATD9,5551234
Command Telephone
String Number
Dial String
Modifiers include the following parameters:
T – Tone (DTMF) dial. Any digit 0–9, * , # , A, B, C, or D can be dialed as
tone.
P – Pulse dial. Only the digits 0–9 can be dialed in Pulse Dial mode.
NOTE: Once a dialing method (tone or pulse) has been specified, it will
remain active only until the end of that dial string. The factory setting is
Tone dial.
, – Pause. Causes the modem to pause before processing the next
character in the dial string. The length of this pause is determined by the
value held in S-Register S8, the Pause Time configuration option.
W – Wait for dial tone. Modem waits for a second dial tone before
processing the dial string. This can be the initial dial tone or a second
tone received when dialing through a tandem PBX (for example,
9W555-6789), or when invoking special features (for example,
70#W555-6789, where 70# is the local telephone company command
that disables Call Waiting).