ManageEngine VQManager 5.2 ManageEngine VQManager is a powerful, web-based VoIP monitoring software that aids in troubleshooting VoIP calls for failures and quality deterioration. It monitors devices that support SIP (RFC 3261) and RTP/RTCP (RFC 3550).

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P2P VoIp 1.1 The program is used for conversation in a local network. The voice packages are transmitted in a format GSM6.10. Voice packages and service information use one and the same UDP port. The program is distributed with the source code.