P3GW Service.exe is part of a product called known as ZyXEL P3GW Service and the developer is ZyXEL Communications Corp. .
If you think that this file contains a virus or another malware, please download a virus scanner.
If P3GW Service.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select ZyXEL P3GW Service from the list to remove the process P3GW Service.exe from your computer.
If you have any problems with P3GW Service.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting ZyXEL Communications Corp., the developer of P3GW Service.exe and ask for more information.