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)
On Tuesday 11 June 2019 at 21:16:40, Luca Bertoncello wrote:> 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! > > > 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.> 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...Well, my starting point, given the hardware setup you've confirmed above, would be to plug an analogue phone into your FritzBox (assuming that's what DT gave you) and see whether the problem exists without Asterisk in the picture at all. The second thing I would try is to put the SIP credentials given to you by DT into the SIP phone itself (most can support at least two lines, so you don't need to over-write the credentials for your Asterisk server account) and again, soo whether the problem persists with the Asterisk server removed from the signal path. That will at least tell you whether Asterisk is causing the problem, because if it isn't: a) there isn't much you can do about it except report it to DT, and b) there's very little the good people here on this mailing list will be able to help you with. Just out of interest, what hardware are you running Asterisk on? It's unlikely to be the cause of the problem, because I've run it on Raspberry Pies for very small setups such as yours, but it might still be useful to know. Regards, Antony. -- BASIC is to computer languages what Roman numerals are to arithmetic. Please reply to the list; please *don't* CC me.
Am 11.06.2019 um 21:28 schrieb Antony Stone: Hi,> Well, my starting point, given the hardware setup you've confirmed above, would > be to plug an analogue phone into your FritzBox (assuming that's what DT gave > you) and see whether the problem exists without Asterisk in the picture at > all.I don't have any FritzBox. I have a little BananaPI with Debian 9 configured as Router and connected to a DSL-Modem. On the BananaPI I installed Asterisk, to have it directly connected to the Internet.> The second thing I would try is to put the SIP credentials given to you by DT > into the SIP phone itself (most can support at least two lines, so you don't > need to over-write the credentials for your Asterisk server account) and > again, soo whether the problem persists with the Asterisk server removed from > the signal path.I can try it... Now it's too late for the test. I'll try tomorrow.> That will at least tell you whether Asterisk is causing the problem, because > if it isn't: > > a) there isn't much you can do about it except report it to DT, andBwahahahahahah!!!! The technician of DT, at least the people answering the Hotline, don't have any idea _WHAT_ is VoIP and so on... They only can say "you have to power off your FritzBox, wait 30 seconds and power it on again". If I say, that I don't have any FritzBox they give a Brain core dumped...> b) there's very little the good people here on this mailing list will be able > to help you with.Really a pity... :(> Just out of interest, what hardware are you running Asterisk on? It's > unlikely to be the cause of the problem, because I've run it on Raspberry Pies > for very small setups such as yours, but it might still be useful to know.As I said, I have a BananaPI with a Debian 9, minimal installed from me with some scripts to manage the DSL. Asterisk was installed from Debian Repositories. Thanks Luca Bertoncello (lucabert at lucabert.de)