Telebit T2500 won't talk to Avatex

[egray at fthood.UUCP]

I've found a modem that my two Telebit T2500s can't talk to!

I've got a remote system with an el-cheepo-Hayes clone...  a Avatex 2400
baud (V.22bis) that answers at 2400, and switches to 1200 on modem
break.  My Telebit T2500s are set up in the convential command mode and
dial the number at 2400-E-1....  the phone rings, the modems sync, I
get a carrier detect light, I get "CONNECT 2400", then I get crap.

What appears on the screen is similar is some respect to what you get
when you're connected at the wrong baud rate (characters typed echo back
bursts of garbage).  I've tried different combinations of parity, stop
bits, guard tones, etc, but on no avail.

No other (non-Telebit) modem has trouble talking to that Avatex, and I
haven't found any other 2400 baud modem that the T2500s can't talk to.

Any suggestions?

Emmet P. Gray				US Army, HQ III Corps & Fort Hood
...!uunet!uiucuxc!fthood!egray		Attn: AFZF-DE-ENV
fthood!egray at uxc.cso.uiuc.edu		Directorate of Engineering & Housing
					Environmental Management Office
					Fort Hood, TX 76544-5057
EOF