TCP COM Bridge - How to the optimize operating system for faster COM port redirecting

Connecting unconnectable

For Windows 2000 - Windows 11 (2019) (incl. Server, x86 and x64). Latest version: 1.7.6 build 921. .

A driver for a receipt, POS, or fiscal printer sends tiny data packets, for example, for every single row of text. After this, the driver waits for an acknowledgment. Network communications add a delay to this data exchange. You can measure this delay using the ping command between source and destination computers. The summary delay depends on the bill length and its complexity.

You can enable optimization for small data packets in the TCP COM Bridge settings.

If you use an operating system older than Windows Vista, your network interface requires optimizations at the system level using Windows registry. For ease of setup, you can use the programs below. Parameters should be changed only once. Maybe, you'll need to change these options again after replacing a network card or updating a network driver.

Attention: Reboot your computer after changes in the Windows registry.

Option #1: How to the optimize operating system for faster COM port redirecting using TCP Optimizer

This well-known program can optimize many TCP parameters.

The direct download link: https://www.speedguide.net/files/TCPOptimizer.exe

1. Install the program and change parameters as shown in figures 1 and 2.

tcp optimizer 1

Fig. 1. Configuring network parameters

tcp optimizer 2

Fig. 2. Configuring network parameters

2. Click the "Apply changes" button.

3. Reboot your computer.

4. After this, you can optionally remove TCP Optimizer.

Option #2: How to the optimize operating system for faster COM port redirecting using Leatrix Latency Fix

This simple utility changes only the necessary parameters and nothing more. The main disadvantage is the size of the downloadable file.

Home page: http://www.wowinterface.com/downloads/info13581-LeatrixLatencyFix.html

Direct download link: http://cdn.wowinterface.com/downloads/file13581/Leatrix_Latency_Fix_3.03.zip

Direct download link #2: http://www.aggsoft.com/download/Leatrix_Latency_Fix_3.03.zip

1. Download the program to your computer and unpack it to any folder on your disk.

2. Launch Leatrix_Latency_Fix_3.03.exe in a folder.

3. Check the "Not installed" status(Fig. 3). If you see "Installed" there, you do not need to change anything.

latency fix

Fig. 3. Leatrix Latency Fix window

4. Click the "Install" button.

5. Reboot your computer.

6. After this, you can optionally remove the folder with Leatrix_Latency_Fix.

See also

Slow receipt or bill printing from a remote accounting software.
Printing on one receipt, POS or fiscal printer from two computers.
Redirect COM ports to a terminal Windows server.
How to send data to a receipt, POS or fiscal printer from a remote accounting software.
How to the optimize operating system for faster COM port redirecting.