Modem connection speeds.. Reg hack?

Hope This helps,,

MaxMTU Fix

Some people have found that their Internet file transfers are quite slow,
often between 900-1,800 characters per second, even on a 56k modem. It might
very possibly be a result of a Windows 95/98 Maximum Transmission Unit (MTU)
problem. Look at the "Bytes received/sec." in System Monitor (SYSMON) and
compare it to the characters per second reported by your web browser. These
two numbers should be within 10%-12%; so if your "Bytes received/sec." is
3,300, your characters per second should be around 3,000. If the characters
per second are 900-1,800, you are getting a lot of unneeded retransmissions
that are quite possibly due to the Windows 95/98 MTU problem.
Microsoft has not released a fix for this yet, but if you download and run:
"http://www.aimnet.com/~jnavas/modem/tcpipcfg.exe" (no quotes) and change your
MTU value to 576 (the default is 1500), it will correct the MTU "bug" in
Windows 95 versions 4.00.950 (retail), 4.00.950a (OSR1) and 4.00.950 B (OSR2),
however, I have been unable to get TCPIPCFG.EXE to work when Microsoft
Internet Explorer 4.0 or 4.01 for Win95, or Windows 98 (with IE 4.01 SP1)
were installed on the system.

Update: [3/20/1998] A concerned reader ZRock(zrock@kermode.net) writes:
I just read your modem tips file and you should clarify the MaxMTU fix. The
setting 576 doesn't work for all ISP's it can range anywhere from 512 all the
way to 1500.... 1500 is where my ISP's setting is set and where I get the best
performance. I also noticed that just using MTUspeed to add the 1500 setting
made a difference even though it is the Win95/98 default. I also noticed more
of an improvement by installing Microsoft's Unimodem update (a huge
difference) then rebooting, uninstalling my modem (rebooting), then
reinstalling my modem drivers I jumped from 2.1 k/sec to over 3.0 k/sec.

And Another,

FASTER INTERNET [+]

... As brought to you courtesy of Richard Ng (richardng@maxis.net.my).

"It seems that in addition to the new entry for the Win98 Global TCP/IP bug
fix (from TIPS98.TXT) in the MSTCP parameters, as well as all the described
Registry fixes in your other articles, not only improved the speed of my
Internet connection, but also dramatically improves my browsing speed if you
add these three new entries under the "MSTCP" Registry key, as shown in this
REG file:

-----Begin cut & paste here-----
REGEDIT4

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP]
"Tcp1323Opts"=dword:00000003
"SackOpts"="1"
"BSDUrgent"="1"
------End cut & paste here------

Copy this text in Notepad, save it with the .REG extension, then
right-click on it in Explorer and select Merge.
Here are the recommended values:

- Tcp1323Opts DWORD Value Decimal Value: 3
- SackOpts String Value Value: 1
- BSDUrgent String Value Value: 1

All above settings (and more) are described in this MSKB article:"
http://support.microsoft.com/support/kb/articles/q158/4/74.asp

You did not state the type of modem you were using A 28K modem will only connect at 33kbs and this is governed by law,a 56k modem will connect at top around 44kbs and this is a V90.
Check with your ISP to see at what speed they are using for your internet conection.
No matter what registry hack you may find you will not notice drastic results,the one I am using with a internal modem is S11=50,it only speeds up the dialing speed.
Reference TechRepublic previous questions toconcerning modem speed connections.

One Last !!!

This Registration file (MAXSPEED.REG) modifies the default settings in
; Win95 Registry keys listed below to speed up your modem communications
; programs (TCP/IP, PPP protocol).
; Register/merge MAXSPEED.REG by (double)-clicking on it in Explorer or
; File Manager.
; Restart Windows when done for these changes to take effect!

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP]
"DefaultRcvWindow"="2144"
"DefaultTTL"="128"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\NETBEUI]
"default"="32"
"ncbs"="16"
"sessions"="32"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\NETBEUI\Ndi\params\ncbs]
"default"="64"
"max"="255"
"min"="8"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\NETBEUI\Ndi\params\sessions]
"default"="32"
"max"="117"
"min"="4"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\NWLink\Ndi\params\maxconnect]
"default"="64"
"max"="128"
"min"="2"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\NWLink\Ndi\params\maxsockets]
"default"="255"
"max"="1020"
"min"="32"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\NWLink\Ndi\params\cachesize]
"default"="16"

REMEBER ALWAYS HAVE A GOOD BACKUP PLAN.

It looks like you have tried all that is possible, perhaps?. Check that the port settings sliders are set at max, and also check that the advanced setting are at 115,000 have you optimised all the DUN settings hardware error corection (ON) etc etc
ATB Michael

S6xtyN9ne,
This may seem rather simple, but I have to ask. How old is your Motherboard and are they internal or external modems? If your Mobo is a couple of years old, your UART chip may not be able to handle the higher transfer rates that you are expecting. You may need to get a better Mobo if that is the case. :)