Linksys PCMLM56 User Manual page 71

Appendix
If you are using touch tone dialing on a phone line that
requires pulses, then it may not work. Use ATDT in
place of ATDP.
• The modem does not auto-answer the phone.
If necessary, make sure the software is configured to
auto-answer the phone. To set auto-answer mode on
from the AT commands, type ATS0=n and press Enter.
The n stands for which number of rings the modem will
answer on. Example: ATS0=3 takes the modem answer
on the third ring. The software does not control the
modem properly or can not detect the modem. Make
sure the software has been set up correctly. Check the
initialization and dial strings.
Some TSRs (programs that stay in memory after they
are loaded) may conflict with the communications soft-
ware. Try starting your computer without loading any
TSRs.
• The modem doesn't dial when you tell it to.
Make sure the software dialing prefix is ATDT. Make
sure the software and modem are set to the same
COMx: port. The modem may not have hung up the
phone line since the last call. Change to command mode
and type ATH and press Enter.
• The modem can connect to some modems, but not
others.
The remote modem may not support data compression
or error correction, which might cause it to take too
long to negotiate a link.
You might try changing the way the modem negotiates
by using the AT&Qn, ATNn, and ATS37=n commands.
Start with AT&Q0N1.
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