David, at 17:30 on Feb 17 1996, you wrote to Bill Grimsley...

BG> According to Rod, non-USRs DON'T write it to NVRAM at all.

db> Dunno 'bout the raw DCE/DTE speed (ie., unaided by any AT command to the 
db> contrary), but the M34F has this one command that certainly seems relevant 
db> to the current discussion:

Before I comment on the following command, it would seem that USRs
permanently WRITE the baud rate to NVRAM, where it remains until physically
overwritten with a subsequent &W, whilst other brands (Rockwells et al)
only STORE the baud rate which was in use when the modem is powered down. 
I still don't have easy access to a Rockwell upon which I can verify this
for myself, though.

That said, it certainly appears from the following that at least the
NetComm does have the option of physically WRITING the baud rate to NVRAM,
although I'd suggest that most owners would (and should) simply use the
default. 

db> R    Host interface speed selection
db> = 0*  Autobaud speed detection enabled
db> = 2     2400bps
db> = 4     4800bps
db> = 7     7200bps
db> = 9     9600bps
db> = 12   12000bps
db> = 14   14400bps
db> = 16   16800bps
db> = 19   19200bps
db> = 21   21600bps
db> = 24   24000bps
db> = 26   26400bps
db> = 28   28800bps
db> = 38   38400bps
db> = 57   57600bps
db> = 76   76800bps
db> = 96   96000bps
db> = 115 115200bps

I'd also hazard a guess that if the term's baud rate was not the same as
the NetComm's locked rate, its inability to auto-baud would create havoc. 
Have you actually tried this interesting "feature" yet ?

db> Since the "R" setting is saved as part of the various
NVRAM profiles, that 
db> means you can either save a locked DCE/DTE (host interface) rate or have 
db> the modem always autobaud (which, as shown above by the asterisk, is the 
db> default).

Presumably this is different from those commands which force either a
minimum or maximum link rate (&Nn and &Un respectively in the
Sportster).

BG> According to the Warp docs, NO version of OS/2 supports >57600 bps.

db> Are we 100% sure that it's COM.SYS and not MODE.COM that's enforcing this 
db> limitation (not that it really matters with modem comms)?

No, it's OS/2's MODE.COM which is documented as only supporting up to
57600.  There's no mention made of COM.SYS's maximum bit rate at all, and
there's no point trying 115200 here, as I never transfer uncompressed
files.

Regards, Bill

--- Msgedsq/2 3.20