User Guide Modem 3460

3460 Fast’R
5-3
CALL ESTABLISHMENT
Modem won’t
answer
Check cabling.
Check parameters:
• Answer (ATS)
•DTR (AT&D)
Ensure that Answer is not set to
Manual (S0=0).
Set DTR=High (AT&D0), if
DTR is not supplied by the
computer.
Check the modem's
Line option (AT&L).
Ensure Line=Dial (AT&L0).
Check that the TR LED
is on (steady).
If the TR LED is not steadily lit,
ensure the computer is
supplying DTR.
Check that the RI/OH
LED is on when ring is
present on the line.
Ensure that the remote modem
is dialing the correct phone
number.
Modem won’t
dial
If using DTR dialing,
check:
• Default dial option
(AT
*
DA)
• Phone number at
stored location
• DTR option (AT&D)
Ensure default dial option is a
valid phone number.
Ensure that a number is stored.
Ensure DTR=108.1 (AT&D5)
or Tail (AT&D4).
Ensure the computer is
supplying DTR.
Check the dialing
environment.
If the modem is dialing out of a
PBX, the modem may not
recognize the non-standard dial
tone. Set Blind Dial=On
(ATS6).
Table 5-1. Troubleshooting the 3460 Fast’R Modem
Problem Diagnosis/Test Possible Solution