On Wednesday, December 11 1996, Bill Grimsley wrote to Hamish Moffatt ...

 HM>> After a reset with ATZ, the modem reverts to whatever port speed was used
 HM>> to write the profile, rather than whatever speed was used to issue the
 HM>> ATZ. If you wrote the profile at a different speed, and your init string
 HM>> was just ATZ in FrontDoor, the modem would change its speed to that other
 HM>> speed and give you garbage RINGs.

 BG> To be fair, a bit rate mismatch will ONLY ever affect an incoming RING,
 BG> and as the Courier will "autobaud" on any AT command, it
doesn't cause
 BG> problems with outbound calls.

This is exactly what I noticed. I was able to place outbound calls and
connect as I normally would, but when watching my mailer, and noticing the
AA LED flash constantly, no RING indicator would ever display. When I
dropped into terminal mode, I dialled my BBS line on another line and
noticed that there were equal spurts of ASCII garbage in place of RINGs.

 BG> True, Rockwells do not suffer from this "anomaly" (I
won't call it a bug,
 BG> as USR themselves maintain that their modems were actually designed that
 BG> way).

To be a prime hassle, and totally confuse an unsuspecting user? Great
design, that is ...

John (japp{at}mpx.com.au)

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