a2b customization and web integration for web dialer. Back end will be Asterisk or any other option. a2b can be used but not mandatory . Web dialer should use iax or sip with g729 or G723 . passthru is fine – customer can instantly see rates by typing destination… (Budget: $250-$750 USD, Jobs: Asterisk PBX, Mobile Phone, PHP, SQL, VoIP)
