Guide/Tweak, TweaksSeptember 22, 2006 9:40 am
There are users both in the rural and urban areas who still rely on Dial-up connections to surf the internet. Many of their settings are poorly configured for maximum performance which degrade not only their web experience but their work as well.
Maximizing performance so to speak includes a number of things we should consider.
Things like:
1. Increasing connection speed
2. Saving more time
3. Saving extra resources
4. Improving security
There is a myth that there’s little you can do with a dial-up modem. I guess, many of you will prove that myth wrong once you read on.
Let’s begin,
PART 1: Tweaking your dial-up modem
1. Go to Control Panel
2. Open Phone and Modem Options
3. Click the Modems tab
4. Select your modem
5. Click the properties button
6. Go to Modem tab
7. Under Maximum Port Speed change it to the highest value which is 115200

8. Go to Power Management then uncheck Allow this device to bring the computer out of standby. (This will save you extra CPU cycles)

9. Click OK to apply the changes
PART 2: Tweaking your dial-up connection
1. Go to Control Panel
2. Open Network Connections
3. Open your default dial-up connection
4. Click the properties button
5. Under the General tab, click the Configure… button
6. Change the Maximize speed (bps) value to 921600.

7. Go to options tab. Under the Redialing options, change the Redial attempts to
999999999 (This setting will save you from clicking the redial button when dialing fails.)
8. Change the value of Time between redial attempts to 3 seconds. (This will cut the long wait between redial attempts.)
9. Always check Redial if line is dropped.

10. Go to Networking tab
Uninstall other services like Qos Packet Scheduler, File and Printer Sharing for Microsoft Networks,
Client for Microsoft Networks and other services except Interent Protocol (TCP/IP).

11. Select Interent Protocol (TCP/IP)
12. Click the Properties button
13. Under the General tab, click the Advance button
14. Go to WINS tab
15. Select Disable NetBIOS over TCP/IP (Disabling the NetBIOS adds extra security against intrusions)

16. Click OK to apply the changes
I suggest you read this related post for further tweaking. CLICK HERE