Sorry I couldn't login to this forrum for a while and had to sign in a new acct Naperv.
Here is the test report:
Upstream jitter 11.8 ms
Downstream jitter 1.7 ms
Upstream packet loss 9.8 %
Downstream packet loss 0.2 %
Upstream packet order 100.0 %
Downstream packet order 99.8 %
Packet discards 0.8 %
MOS 1.0
REGISTER ms 746 ms
INVITE ms 725 ms
BYE ms 439 ms
Test Voice-over-IP
My ISP is Clear 4G, download <= 6 mps, upload <= 1mps.
Looks pretty bad: MOS = 1.0 and jitters are high.