User guide

Chapter 2 - Installation

Installation Procedure

Step Procedure

1 Make sure your computer and any peripheral equipment connected to it are turned off. Failure to do so may

damage both your ISI card(s) and your PC. The MultiModemISI may be installed in a PC-AT, 386, 486, or

Pentium equivalent ISA or EISA bus computer.

2 Remove the cover of your computer as instructed in your computers documentation.

3 Locate the unused slot(s) which you will be using for your MultiModemISI card(s), and remove the slot cover(s)

per the instructions in your computers documentation.

4 Check the settings of the I/O address switch and the IRQ jumper to ensure that they are set properly for your

installation.

Note: One MultiModemISI can be paired with an auxiliary module (model #ISI3334/EC) when it interfaces with

on-board connectors attaching both cards; effectively providing 8 modem functionality. For details on this

process, see Appendix F.

4a The default setting for the MultiModemISIs base I/O address is 210 hex. The default value for the IRQ jumper is

IRQ 10. Choose the IRQ value by covering the appropriate pins with the shorting plug (supplied). If your system

requires a different setting or if you are installing multiple cards, refer to Appendix E for a table of valid address

settings.

5 Install the MultiModemISI card(s) into the selected expansion slot(s) in the same manner as any other add-on

card, as instructed in your computers documentation.

6 Fasten the retaining bracket to the computer chassis and replace the cover.

7 Your MultiModemISI card(s) requires a modular LINE JACK. This is typically an RJ11C or RJ11W jack, but

could also be an RJ12 or RJ13 jack. To connect the modem(s) to the PSTN line(s), plug one end of the RJ11

cable(s) that is provided with the modem into the LINE JACK connector(s) and the other end into the phone-

company-provided RJ11C or RJ11W modular phone jack(s).

Note: Any cables connected to the computer must be shielded to reduce interference.

8 Turn power on to the computer and proceed to the next section, Driver Installation, to install the MultiModemISI

drivers.