This is used to check if any line hung and let PhoneServer restart it
To stop using this feature you have to use the -NOPINGS switch of PhoneServer
By running "PhoneServer -NOPINGS" (it works also when PhoneServer is running as an NT service) PhoneServer won't request ping reply to MailCall lines
If you are running PhoneServer as a service, you can edit the registry and change HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PhoneSoft PhoneServer ImagePath = C:\PhoneSoft\PhoneServer.exe -NOPINGS .