Am 11.06.2019 um 20:42 schrieb Antony Stone: Hi Antony,> I think the main question here is: how are you connecting Asterisk to the > telephone system?Via VoIP...> You mention that you're on DSL from Deutsche Telekom, but is the call going > over this DSL link to soem SIP provider, who then connects you to the PSTN, or > are you connecting Asterisk locally to the phone line via some ATA device?Deutsche Telekom uses since years just VoIP. No ISDN, PSTN, and so on... :( I'm connecting to the VoIP-Server of Deutsche Telekom via DSL (50Mbps down, 10Mbps up). The other party use VoIP, too, since they are in Germany (and Italy) and here there are just VoIP... Sigh! Now I disabled the jitter (jbenable = no), and I called my father in law. He sayd me, the quality is really better, but I hear sometimes little noises... Any other suggestion? Thanks Luca Bertoncello (lucabert at lucabert.de)
On Tuesday 11 June 2019 at 20:53:09, Luca Bertoncello wrote:> Am 11.06.2019 um 20:42 schrieb Antony Stone: > > Hi Antony, > > > I think the main question here is: how are you connecting Asterisk to the > > telephone system? > > Via VoIP... > > > You mention that you're on DSL from Deutsche Telekom, but is the call > > going over this DSL link to soem SIP provider, who then connects you to > > the PSTN, or are you connecting Asterisk locally to the phone line via > > some ATA device? > > Deutsche Telekom uses since years just VoIP. No ISDN, PSTN, and so on... :(Well, same as Net Cologne here where I am, but the cable modem I have still has PSTN sockets on it so you can connect analogue phones to it as well as speaking SIP to it. I wasn't sure which you might be doing with your Asterisk.> I'm connecting to the VoIP-Server of Deutsche Telekom via DSL (50Mbps > down, 10Mbps up).So, you have a SIP phone, connected to an Asterisk server on your local network, which then connects to D Telekom's SIP server over the DSL line?> The other party use VoIP, too, since they are in Germany (and Italy) and > here there are just VoIP... Sigh!Are they also using a SIP phone? Do they also have an Asterisk server on their local network?> Now I disabled the jitter (jbenable = no), and I called my father in > law. He sayd me, the quality is really better, but I hear sometimes > little noises... > > Any other suggestion?Have you considered trying some tool such as http://sipcapture.org/#about to see if you can identify where the latency comes in? Antony. -- Schrödinger's rule of data integrity: the condition of any backup is unknown until a restore is attempted. Please reply to the list; please *don't* CC me.
Am 11.06.2019 um 21:10 schrieb Antony Stone: Hi,> So, you have a SIP phone, connected to an Asterisk server on your local > network, which then connects to D Telekom's SIP server over the DSL line?Correct!>> The other party use VoIP, too, since they are in Germany (and Italy) and >> here there are just VoIP... Sigh! > > Are they also using a SIP phone?My mother yes, my father in law uses an ISDN phone connected to a FritzBox that convert the signal in VoIP.> Do they also have an Asterisk server on their local network? > >> Now I disabled the jitter (jbenable = no), and I called my father in >> law. He sayd me, the quality is really better, but I hear sometimes >> little noises... >> >> Any other suggestion? > > Have you considered trying some tool such as http://sipcapture.org/#about to > see if you can identify where the latency comes in?I must say, that I'm not an expert in VoIP, so I really don't know this tool and don't have any idea how to analyze the problem... Thanks Luca Bertoncello (lucabert at lucabert.de)