[asterisk-users] GSM call routing issue

Vlasis Chatzistavrou vhatz at kinetix.gr
Tue Dec 8 13:25:41 CST 2015


+4178 is clearly Switzerland mobile, not a premium number:


Chances are there is nothing wrong with your number. What your provider 
is saying is probably an excuse for a badly performing route to mobiles.

Note that usually termination providers will maintain different routes 
for landlines and mobiles for the same destination country. In many 
cases, esp. low cost providers, the landline route will perform better 
than the mobile route.

Best regards,
Vlasis Chatzistavrou.

On 8/12/2015 8:39 μμ, Julien Sansonnens wrote:
> Hello everybody,
> I'm experiencing quite a strange issue with some voip carriers when I
> try to call my own GSM cell phone, using international route (I'm in
> switzerland).
> With some budget routes (value route from voip.ms for example), I get
> a fast busy tone, congestion message, or nothing at all when I try to
> call my cell phone number +4178NNNNNNN. I can call swiss landlines
> numbers, or even other cell phones without any problem.
> voip.ms support wrote me that my phone number is "showing as premium
> number". To avoid fraud, there are no routes to this kind of number,
> so the call cannot be made.
> I'm using a regular cell phone account, and I never ordered premium
> services. My number lookis like every other cell phone number out
> there. I never experienced any routing problem with my cellphone,
> before I tried to call it from voip providers.
> Can someone explain me what's this "premium number" thing about my
> very regular and usual cell phone number ? How can I change this ? As
> voipms carrier got the information from some database, who should I
> ask to remove my number from the list of premium numbers ? I guess I
> should ask my telephone operator, but of course nobody's is
> understanding what I'm talking about when I call the support...
> Thanks a lot, best regards, Julien

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