tsmsvc.exe is associated with T-DSL SpeedManager which is mainly distributed in german. Translated information page here.
Quote: With this software the channel transfer rate of the current DSL
connection can be measured and indicated in the InterNet. The speed
manager supports routing and multi-station systems, as well as all
telephone systems with DSL functionality.
Thus you optimize
your operating system for a maximum information flow-rate over a DSL
connection in the InterNet. A connecting test between the PC and the
DSL entrance permits a statement immediately to the function of the
T-DSL SpeedManager from T-Com_T-Online Note: File location is in the Program FilesT-DSL SpeedManager
Every attempt has been made to ensure the information about tsmsvc.exe is accurate but alot of malware applications try to pose as valid applications. If it is something other than what was posted above please leave some feedback in the forum.