Black Box MD1641A, MD1640A Modem Disconnects While On-line, Modem Cannot Connect When Answering

SERIES II INTELLIGENT DATA/FAX MODEMS

The Modem Disconnects While On-line

•If you have call waiting on the same phone line as your modem, it may interrupt your connection when someone tries to call you. If you have call waiting, disable it before each call. In most telephone areas, you can disable call waiting by preceding the telephone num- ber with *70 (check with your local telephone company).

You can automatically disable call waiting by including the disabling code in the modem’s dial prefix (e.g., ATDT*70,—note the comma, which inserts a pause before the number is dialed). To change the dial prefix in Windows Terminal, select Settings, Modem Commands. To change it in Windows 95 HyperTerminal, select Call, Connect from the menu bar, click Dialing Properties, check this location has Call Waiting, and select the correct code for your phone service.

•If you have extension phones on the same line as your modem, you or someone else can interrupt the connection by picking up anoth- er phone. If this is a frequent problem, disconnect the extension phones before using the modem, or install another phone line es- pecially for the modem.

•Check for loose connections between the modem and the computer, the telephone jack, and AC power.

•You may have had a poor connection because of line conditions or the problem may have originated on the other end of the line. Try again.

•If you were on-line with a BBS, it may have hung up on you because of lack of activity on your part or because you exceeded your time limit for the day. Try again.

The Modem Cannot Connect When Answering

•Auto-answer may be disabled. Turn on auto-answer in your data- comm program or send the command ATS0=1 to your modem in terminal mode.

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