Hi CHARLES.

20-Dec-03 04:52:00, CHARLES ANGELICH wrote to JASEN BETTS


 CA> 1237e1c155ae tech

 CA> Hello Jasen -

 CA>>> So CIS verified that many users could push a 300 baud modem to
 CA>>> 450 baud but the 'trick' was the receiving modem had to be setup
 CA>>> to receive at 450 baud as well. CIS did setup a few dialin
 CA>>> numbers at 450 baud as a 'test' then began to charge more for
 CA>>> the 450 access! People dropped it's use and it faded back into
 CA>>> obscurity. Greed has killed off many a good thing.

 JB>> Dunno about that, the RBBS-PC BBS software offered that feature.

 CA> Now that you mention it, I do think I recall some mention of that
 CA> on RBBS message systems. Regardless CIS was the only commercial
 CA> service I knew of to offer it for dialups and it did work, I tried
 CA> it. :-)

 JB>> in think its main fade was when 1200bps modems became popular.

 CA> Quite possibly 1200 could've been 'pushed' but the embedded code
 CA> for modems changed and was not a 'brute force polling' and used
 CA> fixed rates of transfer. :-\

yeah the 300's were basicaslly just oscillators and filters tied to serial
lines

1200s encoded two bits per symbol (period of tone) and used a fixed clock
so you'd need to
modify the modem to increase the clock rate

 -=> Bye <=-

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