Voiptester

本申请的措施像抖动，包丢失等等。

Voiptester is free a network test and analysis tool. It allows users to not only measure their internet connection speed, but also view detailed network parameters like ping, packet loss, jitter, firewall access on a protocol level.

Displayed metrics:

* PING roundtrip time

* RTP packet loss

* RTP jitter

* RTP packet count

* RTP codec type

* HTTP up and download speeds

* Allowed firewall protocols: SIP/UDP, SIP/TCP, RTP, RTCP, ICMP, HTTP

* TCP/IP configuration

* Device details