Hello, try pinging your sip peer ip address following way:
ping -n -M do -s 1300 -i 0.1 -c 100 ${ipaddress} Post several lines and the statistics. Were you also thinking about MTU problems? Not very probable, but one never knows. Marek 2020-06-22 17:18 GMT+02:00, Luca Bertoncello <lucab...@lucabert.de>: > Am 22.06.2020 um 17:01 schrieb Telium Technical Support: >> I don't know if there was a prior email with more details, but.... >> >> Latency is as important as speed. Have you checked latency between your >> device and pop? What about QoS at your location, and does your ITSP >> support/respect QoS? > > That's a very good idea... > Could you suggest me how can I check it? > The Gateway is a Linux with Debian 9. > >> Could problem be inside your network? Have you tested/optimized internal? > > Really difficult to believe... If I call another VoIP-phone in my > network (using the "internal number") the quality is excellent. > > If I call my wife using the "external number", the quality is very bad... > > Thanks > Luca Bertoncello > (lucab...@lucabert.de) > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > Check out the new Asterisk community forum at: > https://community.asterisk.org/ > > New to Asterisk? Start here: > https://wiki.asterisk.org/wiki/display/AST/Getting+Started > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- Check out the new Asterisk community forum at: https://community.asterisk.org/ New to Asterisk? Start here: https://wiki.asterisk.org/wiki/display/AST/Getting+Started asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users