FreeSWITCH is a powerful and versatile telephony platform that can scale from a softphone to a PBX and even to a carrier-class softswitch.
Open source projects have lowered the barrier to entry into telephony for hobbyists and businesses alike. The popular Asterisk PBX tool, for instance, is a high-functioning and low-budget telephony alternative that has proven disruptive in the world of business telephone systems. Perhaps the most disruptive software of all, however, comes in the form of the scalable softswitch library called FreeSWITCH.
Comments
CEL is lossy codec
Peng Li Sep 24, 2009 11:29am GMT
http://en.wikipedia.org/wiki/CELT
Overall, a good article.