[Blink] Serious VoIP problems whenever Blink is connected

[Bart Volgers]

Hi, 

I am using both FritzBox 7170 & 7340 

The only problem I encountered with Blink on the Lan of a FritzBox was that I had to switch of an audio codexes to get it working. 
I ended up in only using G.711.a 
This can also be due to the fact that my VOIP (& Internet) provider XS4ALL.nl only handle this codex. 

I do use Blink directly on the the FritzBox. which works great
I also use Blink directly on external VOIP providers. which works also OK. 

So it can work properly with a FritzBox 

The whole 9.40 minute problem reminds me of the trail version of programs like Audio Hijack, that overlay audio with noise after a specific time. Any audio program present that might interfere? 

What you also can try:

[] Switch off Blink's: "Acoustic Echo Cancelation" it's in Settings -> Audio 
[] Look at the latency graph and packet loss, anything unusual there when the robo voice thing starts ? (When connected click the "I" icon in the Audio session window to get the Session information. 
[] Try an totally different VOIP provider just to exclude that it's not your provider. 
[] Switch your client computers from WiFi to wired, just to exclude radio interference ( a bad magnetron can screw up your connection, I have hands on expressions with this. I found this out while streaming music, normal browsing seamed to work fine. When I found out WiFi was the curl pit, I switched from 7170 to 7340 just for having WiFi N which is on 5Ghz and my problems where gone) 
[] Check if you have other switches / hubs (beside the FritzBox) in your network. Pull it out and test if the problem is still there. 


Hope this helps trouble shooting. 

Lots of success, Bart 







On 8 feb 2014, at 15:01, Frank Helmschrott wrote:

> Hi,
> 
> i'm in talks with AVM about this issue and will assist the solution with support files from the router.
> 
> Just to make one thing clear: The box does not intercept the traffic, it acts as a voip server itself. We have local accounts and connect clients to it. I haven't tested using the VOIP providers accounts directly on the clients but as we want to have internal calls this isn't an option for us. Also the box acts as answering machine and fax machine.
> 
> Frank
> 
> 
> 2014-02-08 14:50 GMT+01:00 Adrian Georgescu <ag at ag-projects.com>:
> Not related but good to know if you own those boxes.
> 
> Anyway the point is the Fritz Box intercepts all SIP and RTP traffic and does something with it. So I am not surprised that is miss behaving when SIP end-points do something that FritzBox does not expect and was not programmed properly for handling it.
> 
> Is a generic problem with any "SIP aware" intermediate equipment in the path that tries to 'fix things'.
> 
> Regards,
> Adrian
> 
> 
> On 08 Feb 2014, at 10:58, Mark Huf <mail at markhuf.com> wrote:
> 
>> Not sure if related but concerns Fritz Box
>> 
>> Mark
>> 
>> http://www.avm.de/en/news/artikel/2014/security_advisory.html
>> 
>> Op 8 feb. 2014 om 10:47 heeft "Adrian Georgescu" <ag at ag-projects.com> het volgende geschreven:
>> 
>>> I have no idea and cannot brainstorm what would happen on minute 9:40 with your Fritz Box.
>>> 
>>> Blink is does not do anything special on that minute.
>>> 
>>> Adrian
>>> 
>>> On Feb 8, 2014, at 10:45 AM, Frank Helmschrott <frank at helmschrott.de> wrote:
>>> 
>>>> Well, my problem is that this only happens with Blink. I’m willing to try but i’m rather sure AVM will say something like „Ask this the guys that are doing Blink“ ;-)
>>>> 
>>>> Do you know these problems with AVM hardware or why are you so sure the problem is on their end?
>>>> 
>>>> Frank
>>>> 
>>>> _______________________________________________
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>>>> Blink at lists.ag-projects.com
>>>> http://lists.ag-projects.com/mailman/listinfo/blink
>>> 
>>> --
>>> Adrian
>>> 
>>> 
>>> 
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> 
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> 
> 
> 
> -- 
> Schöne Grüße,
> Frank Helmschrott
> 
> E-Mail: frank at helmschrott.de
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