Re: 7857 Modem not compatible with a 7852

The 7857's should be compatible with other synchronous modems (ie. 5853,
7855-010, 7852-400, UDS etc.) at speeds of 9600bps and lower.
I know in sync mode at 19.2Kbps you can only talk to another 7857.
(that probably applies to 12K/14.4K/16.8K as well).
If you set the switches on a 7852-400 for 9600bps it will dial out at
9600bps - BUT if you dial INTO the 7852-400 it will ignore the switch 
settings and handshake a higher speed.  You would need to reprogram the
modem to connect at a lower speed (just a wild guess here - the manual is in
the office - but it may be the &S4 setting).



On Mon, 5 May 1997, Doug Barnes wrote:

> Has anyone else experienced this problem?
> I spent 2.5 days trying to get two 400s to talk to each other and
> finally a support line guy mentioned that the modems we were using
> were incompatible. But of course it is not a defect (?????????).
> Fortunatley I had a 7852 (I think the # is right it is one of the
> Options by IBM 33.6/28.8 modems) to use and it connected on the first
> try. 
> 
> 
> 
> - Doug Barnes -
> 
> 
> 
> 
> 
> 
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