What is "Telephony" in my Windows 8 service list? And how is "Telephony" service related to tapisrv.dll?

"Telephony" is a Windows 8 service that Provides Telephony API (TAPI) support for programs that control telephony devices on the local computer and, through the LAN, on servers that are also running the service. "Telephony" service is provided by tapisrv.dll program file.

Detailed information on "Telephony" service:

Service name: TapiSrv
Display name: Telephony
Execution command: C:\Windows\System32\svchost.exe -k NetworkService
Dependencies: {RpcSs}

"Telephony" service is provided by a program called: tapisrv.dll:

Name: tapisrv.dll
Location: C:\Windows\System32\tapisrv.dll
Description: Microsoftr Windows(TM) Telephony Server
File version: 6.2.9200.16384 (win8_rtm.120725-1247)
Size: 305664 bytes
Modified: 7/26/2012 3:07:28 AM UTC

Disabling "Telephony" service may cause issues when running Windows 8 system.

⇒"svchost.exe -k NetworkService" Services on Windows 8

⇒⇒Windows 8 Services Tutorials