Computer Telephony Integration
One of the most ambitious project of the Consortium was the Versit CTI Encyclopedia (VCTIE), a 3,000 page, 6 volume set of specifications defining how computer and telephony systems are to interact and become interoperable. The Encyclopedia was built on existing technologies and specifications such as ECMA's call control specifications, TSAPI and industry expertise of the core technical team. The volumes are:
- Volume 1, Concepts & Terminology
- Volume 2, Configurations & Landscape
- Volume 3, Telephony Feature Set
- Volume 4, Call Flow Scenarios
- Volume 5, CTI Protocols
- Volume 6, Versit TSAPI
Appendices include:
- Versit TSAPI header file
- Protocol 1 ASN.1 description
- Protocol 2 ASN.1 description
- Versit Server Mapper Interface header file
- Versit TSDI header file
The core Versit CTI Encyclopedia technical team was composed of David H. Anderson and Marcus W. Fath from IBM, Frédéric Artru and Michael Bayer from Apple Computer, James L. Knight from AT&T (then Lucent Technologies), Tom Miller from Siemens, and consultants Ellen Feaheny and Charles Hudson. Upon completion, the Versit CTI Encyclopedia was transferred to the ECTF and has been adopted in the form of ECTF C.001. This model represents the basis for the ECTF's call control efforts.
Though the Versit CTI Encyclopedia ended up influencing many products, there was one full compliant implementation of the specifications that was brought to market: Odisei, a French company founded by team member Frédéric Artru developed the IntraSwitch IP-PBX. Odisei was later acquired by semiconductor company 8x8, which deployed the IntraSwitch technology as the second largest standalone U.S. VoIP service provider.
Read more about this topic: Versit Consortium
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