Multi-Tech Systems ISIHP-4U, ISIHP-4SD manual Dialing Commands, Dial Modifier Commands

Modem AT Commands & S-Registers

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Dialing Commands

Use dialing commands to dial and hang up.

Ds	Dial
	s = phone number
	Default: none

Causes the modem to dial the telephone number immediately following it. For example, if you type ATD5551212<cr>, the modem dials the number 555-1212.

Hn On-Hook/Off-Hook

n = 0 or 1 Default: 0

Makes the modem hang up (go on-hook) or simulate the action of picking up a telephone handset (go off-hook).

H0 (or H) hangs up the modem

H1 brings the line off-hook, just as if you had picked up the telephone handset.

It is not necessary to use the H1 command to bring the line off-hook when using the D command. The modem automatically goes off-hook when you press ENTER at the end of the dial command.

Dial Modifier Commands

ISIHP-2S/2U/4S/4U modems rely on the terminal adapters on the card for dialing. For backwards compatibility, the following dial modifier commands can be included in the dial string. They are accepted by the modem, but ignore the actual function. These commands are:

L	Redial Last Number
P, T	Pulse or Tone Dialing
W	Wait for New Dial Tone
,	Dialing Pause
;	Return to Command Mode After Dialing

MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 79