A telephony service provider (TSP) is a dynamic-link library (DLL) that supports communications device control through a set of exported service functions. A TAPI application uses standardized commands, TAPI passes information to the telephony service provider, and the TSP handles the specific commands that must be exchanged with the device.
A service is something a program does in Windows — specifically, a program that starts automatically whenever the computer starts. Most services are things that Windows does, and most of those services are tasks that you don’t need to have running in your computer. To disable a service, follow these steps: Open the Control Panel. Creating A Batch File To Stop And Start A Windows Service Nov 15, 2017 TSP File Extension - Open .TSP File (Windows Telephony
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We have used WireShark to find that the delay is when the packets are coming out of the TAPI Server. It looks like the Telephony Service uses NetBIOS before it uses DNS and where NetBIOS is broadcast traffic it doesn't route over the subnets so I think it then times out then uses DNS which is what causes the delay.
Jan 07, 2010