Bandwidth for voice: A deeper look
Traditional voice calls using Time Division Multiplexing (TDM) technology use 64 Kb per call. VoIP uses IP as the technology to enable transport of voice traffic over a data network. The voice data is encapsulated within an IP packet. The process of putting the voice data into the IP packet is called encoding. The method used to encode the traffic and the transport mechanism (ATM, Frame, Ethernet, etc.) can have a great impact on the size of the packet. Two common options for VoIP packet encapsulation are G.711 and G.729.
Telecom carriers from around the world came to Silicon Valley recently to talk to innovators. The occasion was TC3 2010, the third annual Telecom Council Carrier Connection get-together, put on by the Telecom Council of Silicon Valley. The purpose of the event was to let carriers tell innovators in the valley the kind of innovation they're looking for, and make contact with entrepreneurs they can work with. The big question is how serious the carriers are about pursuing the opportunities that innovators present. And the key to answering the question is understanding how desperate the carriers are. Carriers presenting at the event ranged from dominant telcos to competitive mobile carriers. They included AT&T, Bouygues Telecom, BT, NTT DoCoMo, SingTel, SK Telecom, Sprint and Swisscom. Even the major wireline carriers focused heavily on wireless businesses. And all