[asterisk-users] Voice "broken" during calls

[Michael Keuter]

> Am 14.06.2020 um 16:38 schrieb Luca Bertoncello <lucabert at lucabert.de>:
> 
> Am 13.06.2020 um 22:56 schrieb Antony Stone:
> 
> Hi again,
> 
>> 2b. Take your Thomson telephone to some other location with Internet access, 
>> let it register to your home Asterisk server, and them make a call to the same 
>> number yet again.  I'm sure you can get the Thomson to connect to Asterisk via 
>> some external network, since you say you can do this from your Android phone.  
>> Again, check the call quality.
> 
> I tried it on the network of a friend.
> Not possible to establish a connection at all...
> I *suppose* Deutsche Telekom just allow a logon on their servers from
> the IP of the user, who tries to log on (with other words: my VoIP login
> can just log on from my current IP)...

Hi Luca,

the standard Deutsche Telekom SIP-account (former ISDN Mehrgeräteanschluß PTMP with 3-10 numbers) is always tied to your DSL account.

There is a special "DeutschlandLAN SIP-Trunk Pure" where it does not depend on your DSL account (as it is standard with most other VoIP providers).

> This would explain why I didn't got my mobile phone connecting to the
> Telekom's server and establish a call...
> 
> I also tried to stop Asterisk and all other network services on my
> Linux-Box Firewall/Gateway, including the traffic shaper (in the case,
> this was the problem), then connect my Thomson phone to the Telekom's
> server and call my father in law.
> Always the same problem...
> 
> So, tomorrow I'll get another VoIP phone from a colleque (Elmeg IP 290).
> I'll connect it to my network and my Asterisk and will try to call my
> father in law for a test.
> 
> I really do *not* expect any change in the situation... I think, the
> problem should be somewhere by Deutsche Telekom...
> 
> What is your opinion?
> 
> Btw: I did all tests with my father in law, since he had time for me
> today, but the problem exists an almost all calls, incoming or outgoing,
> no matter from/to which network provider...
> 
> Thanks
> Luca Bertoncello
> (lucabert at lucabert.de)

Michael

http://www.mksolutions.info