[comp.dcom.modems] What all does S120 do?

andrew@ramona.Cary.NC.US (Andrew Ernest) (03/17/91)

In article <9908@discus.technion.ac.il> devil@techunix.BITNET (Gil Tene) writes:
>To detail : S120=12 means no use only LONG packets, no micro

What are the side-effects of S120=16?  This is the value Telebit
says turns off the short burst of V.25 tone at the beginning of
each PEP answer tone.  This tone, which appeared in the BC5.10A
firmware upgrade for my TB+, caused my neighbors with older firmware
to no longer be able to connect to my modem.  S120=16 solved the
problem but I am now curious if that register value (16) has any other
effect I should know about (like packet size, etc).

Can anyone guess why the V.25 tone was added?  Any reason why turning it
off is a bad thing?  (Not that I have any intention of turning it back
on...compatibility with my PEP neighbors is of the most importance to me.)
-- 
Andrew Ernest <andrew@ramona.Cary.NC.US>