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opal: opal (Open Phone Abstraction Library)
opal:
opal: OPAL is the Open Phone Abstraction Library, and is the successor to 
opal: OpenH323. There were a couple of architectural issues in OpenH323, 
opal: especially in the area of the codecs and media channels, that required 
opal: a major rewrite. OPAL is designed to be an infrastructure for any 
opal: protocol, not just H.323. It enables normalized interfaces so an 
opal: application can quickly use a range of "call protocols", be it H.323, 
opal: SIP, PSTN hardware, PC sound cards, MGCP or whatever proprietary 
opal: protocol might exist. OPAL is under Mozilla Public License (MPL).
opal:
