Digital Security Controls PC1575 Manual de instalación descargar pdf (Pagina 98)

Appendix E: Modem Compatibility

Modem Command File

If you still encounter communication problems with your modem, you may want to

make use of the MODEMSTR.FIL file. It is not recommended that you use this utility

unless you feel you have a good knowledge of modem commands. This file is present

on the directory you have installed the DLS-1 software into.

To change the information in this file, it is necessary to use a text editor such as EDLIN

or EDIT which are supplied with DOS, or any other text editor other than a word

processor such as Wordperfect

or WordStar

The first line of the file is the dial modifier section. If you have a need to use dial

modifiers on a regular basis, then by entering a dial modifier onto this line, it will be

dialled before the phone number of the panel programmed in the Work File is dialled.

For a full explanation of dial modifiers, consult your modem manual.

If you wish to add a command sent to the modem during initialization, you may do so

by adding lines to the file after the line that says “MODEM COMMAND SECTION” and

before the line that says “END OF FILE”. Any command that you enter should include

the “AT” part of the command. As an example you may wish to change S9 (Carrier

Detect Response Time) value from the default of 0.4 seconds to 1 second. To do this,

the entry in the file would be: AT S9=10.

The command to set S9 to 0.4 second is still executed, however the execution of the

command in the file overrides the previous setting because any command entered

in the file is always executed after the default command.

Modem DIP Switch Settings

The modem configuration should be as follows:

• DTR STATUS - Follow.

• DTR - “Hangs up” and goes to command state if the signal drops.

• RESULT CODE FORMAT - Words.

• RESULT CODE DISPLAY - Enabled.

• CHARACTER ECHO - Characters echoed in command state.

• AUTO-ANSWER - Disabled.

• CARRIER DETECT - Always on.

• TELCO JACK TYPE - RJ-11, RJ-41S, RJ-45S.

• COMMAND RECOGNITION - Enabled.

• COMMUNICATION STANDARD - 1200 BPS, Bell 212A.

• RESPONSE TO DTR TRANSITION - Hangs up and goes to command state.

• M/S RATIO - USA.

• INTELLIGENT MODE - Enabled.

• DCD - Support use, always true.

NOTE: Some of these settings may not be configurable on your modem. If that is the

case, ignore them as they do not apply.

NOTE: If you do not have one of the modems listed on the next page, you can attempt

to configure your modem based on the setting as listed above. Some settings are

given different names on different modems. Refer to your modem manual, your

modem dealer or the modem manufacturer for more information.

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Digital Security Controls PC1575 Manual de instalación Pagina 98

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