BL> From Bill's other line data, it seems that the NetComm has a
 BL> much lower transmit level than the Courier, and that it tries
 BL> for a higher carrier frequency at the same time.

 DB> The default transmit level for the M34F is -13dBm, and it can
 DB> be "legally" set (with "AT%L") to anywhere from -11dBm to
 DB> -19dBm. There's an undocumented command ("AT#T") that will
 DB> permit higher transmit levels. I tried -9dBm in a call to Dave
 DB> Hatch, but it made no difference. A call to David Drummond,
 DB> however, resulted in .. ta-da! A 28.8Kbps connection (with full
 DB> EC/compr). 

  Aha! Perhaps daylight dawns.

 DB> Dropping the transmit level back to -11dBm resulted in a
 DB> 26.4Kbps connection to the same site (DD). I even managed to
 DB> get 21.6Kbps on a call to Poe (using -9dBm), despite the fact
 DB> that the last few times I tried I could only manage 19.2Kbps
 DB> (using -13dBm, the default). I think we've really hit on
 DB> something here...

  You've made my day. 

  Telecom would like you to use low levels, because they have
crosstalk problems. It may be that NetComm is being fair and
honest, and USR are yanky running-dog bastards.

  Of course, if I were an engineer at Telecom, I'd set a clipper to
stop smartarses going too high, and if such a clipper exists and you
hit it, it'll ruin the data flow all at once. The danger of a high
transmit level is that you will overload one of the Telecom amplifiers
somewhere.

  Is there a Telecom Tech in the house?

  The bit I don't understand is that 13dB to 9dB is only a small
change (60%). Why is it so touchy? Or are we *already* overdriving
their amplifiers?

Regards,
Bob
___ Blue Wave/QWK v2.12
@EOT:

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