Multi-Tech ISIHI-2S Specifikace stáhnout pdf (Strana 113)

MultiModem ISI Hybrid Series, ISIHI-2S/2U 113

Chapter 6—Troubleshooing Guide

 Peripheral expansion cards, such as bus mouse and sound cards, may include a serial

port preconfigured as COM1 or COM2. The extra serial port, or the card itself, may use

the same COM port, memory address, or interrupt request (IRQ) as your

communications port. Be sure to disable any unused ports.

To look for address or IRQ conflicts if you use Windows 3.1x, select File then Run in

Program Manager. Type MSD and press ENTER. Then select Mouse, COM Ports,

and IRQ Status and note the addresses and IRQs that are in use. If you find an IRQ

conflict, note which IRQs are not being used, then change one of the conflicting devices

to use one of the unused IRQs. If you find an address conflict, change the address of

one of the conflicting devices.

To change a port address or IRQ in Windows 3.1x, double-click the Control Panel icon

and then the Ports icon. Click the port you want to change; then click Settings and then

Advanced and select the new port address and/or interrupt. If you want to use COM3 or

COM4, note that COM3 shares an IRQ with COM1, as does COM4 with COM2, so

you should change their IRQs to unused ones if possible.

If you use Windows 95, right-click My Computer and select Properties. Click the

Device Manager tab and then double-click Ports. Double-click the Communications

Port where your modem/TA is connected. In the ports Properties sheet, click the

Resources tab to view the ports Input/Output range and Interrupt Request. If another

device is using the same address range or IRQ, it appears in the Conflicting Device

List. Remove the check from Use Automatic Settings to change the ports settings, so

they do not conflict with the other device. Or, select the port the conflicting device is on

and change it instead. If you need to open your computer to change switches or jumpers

on the conflicting device, refer to the your computers documentation.

 The serial port may be defective. If you have another serial port, install the TA on it,

change the COM port setting in your software, and try again.

 The TA may be defective. Call Tech Support for assistance (see Chapter 6).

The terminal adapter dials but cannot make a connection

Possible be several reasons the TA fails to make a connection include:

 Lack of a proper physical connection to the communication line

 A busy signal

 A wrong number

 No terminal adapter at the other end

 A faulty communications device, computer, or software at the other end

 Incompatibility between communications devices

 An improperly configured ISIHI-2S/2U TA

Narrow the list of possibilities by using extended result codes. To enable them, enter

ATV1X2 and press ENTER while in terminal mode or include V1X2 in the TA s

initialization string (V1X2 is enabled by default). When you dial again, the TA reports the

calls progress.

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Multi-Tech ISIHI-2S Specifikace Strana 113