Interoperability testing has been completed between VocalData's application server and Convedia's IP media servers. VocalData offers a standards-based voice application server that enables service providers to supply business and residential users with IP Centrex, hosted PBX, VoIP VPN, and enhanced services such as conferencing and unified messaging. Convedia's media servers support carrier-class media processing for enhanced services and applications. VocalData application server uses a SIP interface to control Convedia's media processing features, including IVR, advanced audio bridging, media transcoding, and audio play/record. http://www.vocaldata.comhttp://www.convedia.com