U.S.Robotics 5661A Mode D'emploi page 37

My modem won't dial out or doesn't answer incoming calls.
FOR BOTH DIALING AND ANSWERING PROBLEMS
Possible solution:
You may have a bad phone cord connection to your modem. The phone cord should be plugged
into the jack on the modem and into the wall jack. Use the phone cord included in your
modem's box, if possible.
Possible solution:
You may have devices between the modem and the phone jack. There should be no line splitters,
fax machines, or other devices between the modem and the wall jack.
OFFICE USERS
Possible solution:
You may have plugged your modem's phone cord into a digital line. This will cause permanent
damage to your modem. Contact the department responsible for your phone system if you are
unsure whether or not your phone line is digital.
Possible solution:
If your phone system requires dialing "9" to access an outside line, be sure to add "9" before the
number you are dialing.
VOICE MAIL USERS:
Possible solution:
If you have voice mail provided by your local phone company, your dial tone may be altered when
messages are waiting. Retrieve your voice mail to restore your normal dial tone.
My modem sounds like it's trying to connect to another modem but fails.
Possible solution:
You may have a poor connection. All calls are routed differently, so try placing the call again.
My modem isn't achieving a 56K Internet connection.
The V.92 and V.90 protocols allow for download speeds of up to 56K and the V.92
protocol adds upload speeds of up to 48K, but line conditions may affect the actual
speeds during a given connection. Due to unusual telephone line configurations, some
users will not be able to take full advantage of V.92 or V.90 technology at this time. In order to
achieve a V.92 or V.90 connection:
• The server you're dialing into must support and provide a digital V.92 or V.90 signal. Your
ISP can provide you with a list of dial-up connections and information on what those
connections currently support.
• The telephone line between your ISP and your modem must be capable of supporting a 56K
connection and contain only one digital-to-analogue conversion. The 56K signal from your
ISP begins as a digital signal. Somewhere between the ISP and your modem, there will be a
digital-to-analogue signal conversion so that your modem can receive the data. There must
be no more than one digital-to-analogue signal conversion in the path from your ISP to your
modem. If more than one analogue-to-digital conversion occurs, your connect speeds will
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