TVSP - (Television Service Provider) - (1) An Internet or other network service provider that specializes in providing television service. The TVSP may have provided special software to make it possible for viewers to access the network. MSN®TV as well as former NCI and AOLTV (which used to be a Web TV service) might have in the past been considered TVSPs.

(2) Internet or other network service providers who specialize in viewing the Internet over television. TVSPs don't necessarily own servers, modems, routers and phone lines like an ISP, they might subcontract out that part of the operation to standard ISPs. 

(3) Internet Television service provider.

Please note, most consider TVSP to be an antiquated term.