[Blink] "Stalker Voice" when calling mobile numbers

Adrian Georgescu ag at ag-projects.com
Tue Mar 22 12:46:11 CET 2011

When you call to PSTN you are passing a PSTN gateway. It may be a codec related problem.

Do you have this problem when you call between two SIP clients directly or only when you call to a PSTN number?


On Mar 22, 2011, at 11:53 AM, Klaus Meßlinger wrote:

> Hi,
> Blink Pro's a great app! I really like it for its smooth integration in Mac OS and the inobtrusive interface.
> There are only two issues I have: one is with connectivity to German SIP provider 1&1 (www.1und1.de), but this has been discussed more than once in this forum.
> The other is about sound quality: when I call my mobile number from from Blink Pro, my voice is heard distorted at the other end, slow and very deep, like a stalker's call. (I really frightened my wife when I first called her.) 
> With landline numbers or incoming calls from my mobile all is well.
> Any ideas what might cause this?
> Thanks,
> Leo
> - Blink Pro 1.0.5 for Mac (iMac latest generation, MacOS 10.6.6 Snow Leopard)
> - Blink Pro connects to AVM Fritz!Box 7320 via WLAN (router manages SIP devices, i.e. Blink Pro is registered as a phone device)
> - Internet/SIP provider is 1&1
> - distorted outgoing call went to different numbers on German ePlus mobile network
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