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echo: hs_modems
to: RICHARD TOWN
from: MIKE FARRILL
date: 1997-03-10 11:54:00
subject: Carrier level

-> -=> Quoting MIKE FARRILL to RICHARD TOWN <=-
->
-> -> operate.  By adjusting the relevent S register, the transmit level
-> -> can be tweaked.  -12 has been reported as useful.  Modem's have
-> -> their own AGC setup.  I have my AGC switched off at my local
-> -> exchange.
-> MF> I'll try changing it.  Could doing this affect my connection spee
->
-> Connection speed is a function of available effective line bandwidth
-> all the way from your modem's 'phone socket to the remote's.
-> The greater the bandwidth, the more likely you are to achieve higher
-> connect rates.  33k6 connects require some 3.8kHz
-> Some modems negotiate at a lower rate and then
-> rate up-shift once the connection's been successfully negotiated
-> (the way specs were originally envisaged AFAICT)
-> Other modems, in the chase for commercial advantage, negotiate too
-> high a rate and then have to shift down again in connect.  But they
-> do continually display this initial connect rate!  This has been
-> reported in Couriers with latest US code.  Supra 336+ has introduced
-> a specific S register for users to try and accomodate for this
-> "aggressiveness
If this is all true then, what are the benefits of changing the Carrier
level?
--- Platinum Xpress/386/Wildcat! v1.3
---------------
* Origin: MADDOG! BBS : (510) 895-8089 : San Leandro, Ca. (1:215/13)

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