The service allows you finding out who has called you, when the telephone line was busy, switched off or was outside the zone of coverage. By doing so, it ensures that an important call will not be missed.
Sangoma B500 boards are designed for easy integration with open source projects, including Asterisk and FreeSWITCH, as well as other open source and IP PBX, Switch, IVR, and VoIP Gateway applications. B500 boards provide developers with new efficient solutions and cost effective connectivity.