Modemsite's Forum56 - The Modem Board
Main | profile | register | search | help | Ad-free Login
Forums | USR | Will V.44 really work?    Watch  
Author Topic
Tl Posts:

Posted - 4/16/2001 2:44:07 PM  Show Profile  Email Poster  Edit Message
If the DTE speed is only 112K as on many modems,
what use is V.44 (6:1 compression)?

Even with a DTE of 220K (rare) one can't really
make use of better than 4:1 compression, which
one already has with V.90

What am I missing?

Did I just waste my money?

Tl Posts:

Posted - 4/24/2001 9:25:33 AM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
6:1 = max compression with V.44, and to totally take advantage of it you need a 'Winmodem' (virtual COM port not limited by h/w) or a port speed of 230k;

However, to the extent that V.44 provides more efficient compression compared to V.42, you may see improvement in throughput with certain types of data even with a lower port speed.


Tl Posts:

Posted - 4/25/2001 7:53:36 AM  Show Profile  Email Poster  Edit Message  astanovoys Homepage
If motherboard have onboard MIO which with SMC, NS, Winbond and ALI - then COMport support's 230400 and higher, but M$ have no drivers to support it.

You need to use SHSMOD driver from

SHSMOD is developed by Gigo. Which supports high speed serial communication with SMC, NS, Winbond, ALI MIO chip sets on Windows 95/98. The communication speed with SHSMOD will be 115,200bps or more.

Alexey Stanovoy

Click Here To Close Thread, Administrators & Moderators Only.

Show All Forums |