Hi Poe,

 PL> On Feb 28 19:16 in a msg to Poe Lim, Robert Gorey of 3:632/309 wrote:

 RG>  The 5/7 code results received a "POOR" rating because the
 RG>  transmission level was -8.6dBm and was reported to be 10.4dB too
 RG> high (loud).

 RG>  The 18/7 code received a "FAIR" rating with a -13.0 dBm
 RG>  transmission level and was reported as being 6.0dB too high
 RG> (loud).

 RG>  The recent hacked US code also received a "POOR" rating with the
 RG> highest transmission level of -8.4dBm and was report as being
 RG> 10.6dB too high.

 RG>  The recommended Telstra transmission level for Faxes is -19dBm  as
 RG> the optimum and lowest level. For analog telephone exchanges  a
 RG> level of between -19 to -16dBm is said to be satisfactory.  Lower
 RG> levels are said to help overcome some echo problems.

Yes, Ross Mudie has reported that too-high fax Tx levels are the single
greatest cause of fax transmission problems.  (Telstra Fax Newsletters)

It's not the 'transmission level'.  It's the _received_ transmission level,
and allows 6dB loss (fixed) over the digital network.  That corresponds to
a _transmitted_ level (at your modem) of -13dBm, which is the correct Tx
level.

 PL> That's the difference between faxes and data modems; for a
 PL> modem, you need it as close to -10dB as possible to get

Except with V.34's intelligent Tx level adjustments to suit the line :)

 PL> through, although the -8.4dB is a tad high, and I've yet to
 PL> see that. Usually it reports the receive levels, which can
 PL> be nowhere near -8.4dB.

Exactly.  -8.4dBm as a received level would indicate a Tx level of
something like -2dBm, which is VERY LOUD, and would very likely splatter
the neighbours pretty badly .. it's a fair bit too loud for a local Tx
level, even .. can the fax Tx level be adjusted up that loud on the
Courier??

Cheers, Ian

--- MaltEd 1.0.b5