How to monitor the quality of sip telephony for managers working at home?

Question

Telephony

Good afternoon, there are several managers who call from home. On the home Internet, they connect to our telephony server, the server is on asterisk.
The problem was found out: sometimes the client begins to hear the manager badly, the manager's sound "gurgles" and the client manager hears well. The telephony provider says that there is a problem in the outgoing channel from the manager, probably the Internet is bad at home, packets are lost.
The situation is that he learns about such a problem from clients when the client begins to complain that the client is hard to hear the manager. Not all clients complain.
Gurgles somewhere in 20% of cases.
Can I somehow configure the asterisk server to report packet loss? To be able to take immediate action. Call from a cell phone.

Answer 1

Try to install a more economical codec (speex 8 kHz). Packet loss normal softphones (linphone) display immediately in the interface.
Console commands for monitoring asterisk
And let managers not distribute torrents while they work.

Answer 2

From the asterisk server in real time via AMI, you can collect RTCP report data, here is an approximate description of the implementation: igorg.ru/2009/12/20/monitoring-rtp-qos-v-asterisk
Also parallel to asterisk or to another server connected you can install voipmonitor to the mirror port, although it writes data to the database at the end of the call, but gives data for post-analysis of problems.
And last but not least, there are commercial standards like POLQA and some cheaper substitutes that can detect distortions by recording a conversation.