Guardian Technologies DFT 150/175, DVST manual 7Modems, 7.1PSTN Connection Modem, 7.2MODEM Commands

DVST Installation Guide Modems

7Modems

7.1PSTN Connection (Modem)

Connection to a PSTN telephone line is via a modem and modem port.

7.2MODEM Commands

MODEM= Sets MODEM operation, three parameters:

The MODEM= command controls three distinct parameters.

OFF

(default, OFF)

Tech note: The reason is as follows; if set to ATMODE the DVST attempts to communicate with the MODEM when starting up, exiting set up mode etc. The DVST will wait a set period of time for replies before giving up. This will considerably slow the system if no MODEM is attached.

DIRECT, ATMODE

(default, ATMODE)

The DIRECT mode is used if the MODEM has its telephone numbers stored internally and the DVST does not pass telephone numbers for dialling.

The ATMODE is most often used. The DVST passes numbers from the dial menu to the MODEM which then initiates a call.

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