~ Hi there,
~ I have a US Courier 56K vs.everything modem connected to a router to
~ answer incoming calls from users.
~ How would I go about setting it to auto sense speed of the other modem since
~ most of the time it connects to very low speeds like 20Kbps? Thanks a lot,
~ Calin
~
Ordinarily (well, IDEALLY), a modem pair will train in whatever rates are
appropriate to the circuit - if the circuit is good for 33600/33600 bps, the
modems should train at that rate, and if the circuit is only good for
19200/19200 bps, then they should train in (or settle into) that rate.
So no configuration on your end should be necessary.
Having said that - if you KNOW that the top carrier that is likely ever
to work happily over your circuits is apt to be 19200/19200 bps, then it's
not a bad idea to configure a rate cap. Consult the Courier AT documentation.
The data rate between the Courier and your router (the "DTE rate") should be
normally be fixed at a rate well above the modem modulation (DCE) rate -
typically 115200 bps. (We have lately seen some problems talking to Couriers
at 115200 bps, so setting the rate to 57600 bps may work better.) To lock the
Courier at the desired, configure your router for that DTE rate, and have it
send the Courier the command necessary to lock it at that rate (AT&B1).
Aaron
