[comp.dcom.modems] No comlink betweeen Ven-Tel & Avatex modems?

meri@leadsv.UUCP (Ernie Meri) (11/14/87)

References:


Has any Ven-Tel modem user heard of, or experienced, a call originate 
connection problem ONLY in 1200 baud when calling up someone using a 
AVATEX (or maybe a CERMETEK) modem? 

What I have occurring is:
Immediately after the connection is made, no further data transmissions 
arrive from the host, although I can see that I am still able to 
transmit to him and the line conditions are fine. All other 1200 baud 
originate calls work fine to any other modem and stepping back to 300 
baud even works for this one as well! So it is unique to 1200 baud and
my Ven-Tel calling up this modem only! (When using a Hayes to the same
modem, I experienced no problems.....)

Someone had mentioned that either a frequency shift or signal strength 
change occurs from this modem that allegedly puts my Ven-Tel into the 
self-test loopback test mode and thus prohibits futher normal data 
input to the Ven-Tel. Does anyone know the real scoop on this?? 
I will be dissappointed if this is a known problem with the Ven-Tel, 
since PC Magazine rated this Ven-Tel 1200 as the 2nd best out of 75 
modems tested in the call originate mode!!!!!

Email or post any info as you see fit....

	    Ernie Meri
	    Lockheed Missiles & Space Company, Inc. 
	    Sunnyvale, California

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