BG> 1. What EXACTLY does ATY11 measure ?

JF> It measures the RX levels of a set of specific frequency tones which
JF> are sent during the V.34 handshake sequence. These RX levels are used
JF> to determine the frequency response characteristics of the channel,
JF> which in turn affects V.34's selection of carrier frequency and
JF> symbol rate.

BG> 2. Why is there such a VAST difference between USR & Rockwell ?

JF> That depends on what kind of difference you mean. If the rolloff is the
JF> same general "shape", but the overall levels are
different, that would
JF> indicate that the remote modems are using different transmit levels.

JF> If the rolloff "shape" is different, that would indicate that
JF> individual calls are being routed through different circuits, or
JF> the remote modem is having a v.34 parameter negotiation problem.

BL> Now perhaps you will believe what Bill and I have been telling you,

Pity you dont even know its true Bob. And if you actually put that
senile raddled 'brain' of yours into gear, you would be able to work
out that if V34 didnt use a STANDARDISED thing that the modem at the
other end of the line put on the line to be scrutinised, to see what
had happened to the STANDARDISED test signal on the line, once it
had gone thru the line, you wouldnt have a fucking standard Bob.

V34 aint about modems cleverly playing tricks with another
identical modem at the other end, its a STANDARD thats supposed
to allow DIFFERENT modems to operate together successfully Bob.

Poor old Bob.
@EOT:

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