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22 MultiModem ZPX User Guide

system manual to see if you can change the internal dial tone. If you can’t change the interal dial tone,

change the modem’sinitialization stringto include X3, which makes the modem ignore dial tones.

• If the modem reports BUSY, the other number may be busy. Try again later. BUSY also may indicate

that an outside line access number was not added to the phone number (for example, some phone

systems require users dial 8 or 9 to make calls outside the system). If your system requires a

number to access an outside line, include it in the modem’s dial prefix, for example, ATDT9, (the

comma inserts a pause before the number is dialed). If you have set up your connection through

Dial-Up Networking or another communications program, find the dialing configuration dialog box

that allows you to add a dial prefix. Enter the access number as the prefix when dialing.

For example, inWindows 95/98,click Start|Settings|Control Panel, anddouble-click Modems. Select

theappropriatemodem model(Multi-Tech MT5634ZPX-V92), click DialingProperties andtype the

access number in the local and long distance fields for How I dial from this location.

• If the modem reports NO ANSWER, the other system has failed to answer, or you may have dialed a

wrong number. Check the number.

• If the modem reports NO CARRIER, the phone was answered at the other end, but no modem

connection was made. You may have dialed an incorrect number and a person answered instead of

a computer. A NO CARRIER message may also indicate the modem you are calling is turned off or

the software on the receiving end is faulty or incorrectly configured. Check the number and try again

or try calling another system to make sure your modem is working. Try calling the modem’s phone

number from your telephone. If you hear harsh sounds, a modem is answering the call. If the

modem is answering, the modems may be having problems negotiating due to modem

incompatibilities or line noise. Try the call again connecting at a lower speed by setting register S37

to a lower rate (for example, by typing ATS37=11 in the terminal window and pressing Enter).

The modem disconnects while online

• If you have call waiting on the same phone line as your modem, it may interrupt your modem

connection when someone tries to call you. If you have call waiting, disable it before each call. In

most telephone areas in North America, you can disable call waiting by preceding the telephone

number with *70 (check with your local telephone company).

You can disable call waiting automatically by including the disabling code in the modem’s dial prefix

(e.g., ATDT*70,—note the comma, which inserts a pause before the telephone number is dialed).

For example, in Windows 95/98 software, click Start | Settings | Control Panel, and double-click

Modems. Select Multi-Tech MT5634ZPX-V92 and click Dialing Properties. Check This location has

call waiting and select the correct code for your phone service.

Note: *70 is used only in the United States.

• If you have extension phones on the same line as your modem, someone can interrupt the

connection by picking up another phone. If this is a frequent problem, disconnect the extension

phones before using the modem or install another phone line for the modem only.

• Check for loose connections between the modem and the telephone jack.

• You may have a poor connection because of line conditions or a problem on the other end of the

line. Try again.

• If you were online with a commercial online service, it may have hung up because of lack of activity

on your part or because you exceeded your time limit for the day. Try increasing the length of time

Chapter 4 -Troubleshooting

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Connect Tech Echo/ISA Guide de l'utilisateur Page 22

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Produits connexes et manuels pour Équipement Winco AS480