Aswath Rao has 20 years of experience in the telecommunications field, having worked for leading R&D firms. He has worked on ISDN, Frame Relay, BISDN, wireless and satellite communications. For the past 5 years he has been working on VoIP related issues. Long before intelligence at the end became acceptable, he advocated "functional terminals" in ISDN. His proposal for Inter Connect Function has been incorporated in the TIPHON architecture and currently it is known as Session Border Controller. He has developed ways to offer PSTN subscribers many of the features available to VoIP subscribers.  He maintains a blog. He can be reached at rao (dot) aswath (at) gmail (dot) com