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[HLL] Sync 14.4-Data
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> > There are different solutions, at least:
> > * Stay with 14.4-modems, try using them in sync-mode
> Pro: we know that it works. The VP1 uses sync and it sounds better than
> many international circuits.
> Con: there is no way (correct me if I am wrong) to create a compatible
> software emulation using a PC with a standard modem.
> My conclusion: sub-optimal given the stated goals of this project.
Big advantage is avaiable technology (gsm-coder, 14.4-modems/lines).
So i'm stuck to on this idea a bit...
Standard hayes-kompatible 14.4-modems have a sync operation mode.
Looks as if they could operate with VP1-sync-standard etc.
The problem is only the pc-comm-port, which can't operate synchron.
There would be not problem with HLB, because we design i/f ourselfs.
So for a compatible implementaion (pc/hlb/vp1) we would need a way
to encode/decode this sync-data on standard com-ports.
No problem with standard i/f-hardware (but probably unwanted),
but would require tricky programming if done in software.
Software-Solution might be ok for DOS, but impossible when
using WIN or LINUX etc., because of timing issues.
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