Re: Synchronous serial Re: E-Mail Formats RE: Future of cctalk/cctech

[Paul Koning via cctalk]

> On Jun 18, 2020, at 5:47 PM, Antonio Carlini via cctalk 
> <cctalk@classiccmp.org> wrote:
> 
> ...
>> Anyway, this whole line of attack is fairly academic as the modems can
>> only do 48kbps - 160kbps and the maximum for the DSH/T32 seems to be
>> 19200bps.
>> 
> 
> I'd be surprised if they don't work at up to 56k at least. Maybe not 64k (I 
> remember the DSV11 firmware engineer telling my that some extra work had to 
> be done to get one of the DSV11 modes to work properly at 64k even in 
> pathological cases, so maybe other, lower-end interfaces didn't get the same 
> love).
> 
> 
> Above 64k would not have been a normal use case back in the day - I don't 
> have any data handy to check what should work though.

Not with modems, but of course the "local" line cards (coax pairs) for the 
DMC/DMR/DMP sync DDCMP controllers could go at 1 Mb/s.  DMC only barely (with a 
few bugs).  The DMV doesn't have that capability if I remember right.

        paul