Replay_VoIP is designed to record phone conversations over VoIP phone systems that use the Session Initiation Protocol (SIP). This is a "software only" solution: cost-effective, powerful, easy to implement and simple to use. Its user-friendly Web-based interface allows authorized personnel to search and retrieve call recordings based on a variety of search criteria.

For large installations, multiple PCs with Replay_VoIP can run on the same (or distributed) network – supporting anywhere from 10 to thousands of SIP phones.

Replay_VoIP creates Call Detail records from SIP headers. This call control information is recorded for all calls accessible to the recording PC. The voice recordings are constructed from RTP packets, and are recorded for designated extensions.