VoFR support within the service provider community has been cautiously developing, hindered by fears of installed base erosion and issues pertaining to provisioning, management, and service levels, among others.
Value-added network providers and those with a large base of multinational connections - like InfoNet - were early on the VoFR bandwagon and position it as a key service differentiator.
Although VoFR covers a number of deployment models, it shares common, compelling economic drivers.
A growing number of vendors are now delivering VoFR solutions that target the requirements of mission-critical branch networks.
Today, VoFR standards use a number of VoFR compression techniques that range from 8 to 32 Kbps per voice channel.
Silence Suppression: Almost all of the DSPs used in today's VoFR implementations can detect and weed out silence patterns, reducing bandwidth requirements.
To minimize the 'clipping' effect caused by frame loss, some of the more advanced VoFR FRADs employ a lost speech interpolation technique that blends speech samples that precede and follow the lost frame(s) to mask the lost speech elements.
As with data, you can build a VoFR network without management.
Bishop said TOTLCOM successfully implemented a VOFR network for their six Northern California branches and said the company has already reduced the cost of communicating between sites.
TOTLCOM's VOFR network now employs sophisticated voice compression technology enabling both data and voice to be transmitted simultaneously without compromising crucial data performance.