Speed 56 Dial-Up Modem

Here are some tweaks that will help you get the best possible speed for your 56K modem.

1)First of all download the latest driver for your modem, from the manufacturer’s website.

2) Download Cablenut & use the following settings:

DefaultReceiveWindow = 8192
DefaultSendWindow = 4096
DisableAddressSharing = 1
InitialLargeBufferCount = 10
InitialMediumBufferCount = 24
InitialSmallBufferCount = 32
LargeBufferSize = 4096
MaxFastTransmit = 6400
MediumBufferSize = 1504
PriorityBoost = 0
SmallBufferSize = 128
TransmitWorker = 32
FastSendDatagramThreshold = 1024
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitOnReceives = 0
GlobalMaxTcpWindowSize = 8760
MaxFreeTcbs = 2000
MaxHashTableSize = 4096
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 0
TcpLogLevel = 1
MaxDupAcks = 2
TcpMaxHalfOpen = 100
TcpMaxHalfOpenRetried = 80
TcpRecvSegmentSize = 1460
TcpSendSegmentSize = 1460
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 8760
MaxConnectionsPer1_0Server = 8
MaxConnectionsPerServer = 4
DefaultTTL = 128
DisableUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 92

3) Open your registry (start -> run -> type regedit) and change the following registry entry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters

Add the parameter BufferMultiplier and give it a value of 400 hexidecimal which will make it 1024.

4) Download TCPOptimizer and use the following settings:

Under ‘General Settings’ tab select ‘Custom settings’ and use the following settings.

MaxMTU – 1500
TCP Receive Window – 8760
MTU Discovery – Yes
Black Hole Detect – No
Selective ACKs – Yes
Max Dup ACKs – 2
Time to Live (TTL) – 128

TCP 1323 Options – uncheck both boxes

Under ‘Advanced Settings’ tab:

Max Connections per Server – 4
Max Connections per 1.0 Server – 8

Then select Apply changes and reboot your computer.

5) Go to Network Connections from the Control Panel – right click on your Internet Connection and select properties, uninstall QoS Packet Scheduler.

6)Go to the registry entry and change the following settings:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\ServiceProvider

Class – 1
DnsPriority – 1
HostsPriority – 1
LocalPriority – 1
NetbtPriority – 1

6) Increase the speed your modem connects.

Right click on “My Computer” then go to “Properties” then go to “Hardware” then go to “Device Manager” then go to “Modems” Then select that tab so it scrolls down, then go to your modem, and right click and go to “Properties” then go to “Advanced” Then in the box saying “Extra Settings/Extra Initialization Commands” type in that box: atx3