User`s guide

Troubleshooting
6-4 Issue 3 October 1995
Answer Problems
P: Your modem does not answer.
S: Make sure the telephone cord is connected to the modem’s
LINE connector.
S: Attach a telephone to the wall telephone outlet and verify
that it rings during incoming calls.
S: Make sure that the Auto-Answer Ring Number configuration
option (S0) is set to a value other than 0 (disable). Use the
ATS0? command to view the setting of S0.
S: Make sure that the computer is providing DTR to the
modem (on the external modem, the TR LED should be lit).
If the computer does not provide DTR to the modem, verify
that the modem’s &D command (DTR Action) is set for
Ignore (&D0).
P: Your modem answers when you do not want it to.
S: Ensure that your communication software is not running.
S: Ensure that S-register S0 is set to 0.
S: If you have an external modem, turn it off.
Connect Problems
P: Your modem dials, but does not connect.
S: If the modem is operating behind a PBX, determine whether
a 9 and W (Wait for dialtone) must precede the telephone
number.
S: Determine whether you should use Tone (ATDT) or Pulse
(ATDP) dialing.
S: During the dialing or handshaking process, if any key on the
keyboard is pressed, the call will disconnect. This is known
as any-key abort and is standard operation for dial
modems. Try dialing again, and wait for the CONNECT or
BUSY message to display before entering data from the
keyboard.