[asterisk-users] GSM call routing issue

Brian :: bc at iptel.co
Tue Dec 8 15:16:07 CST 2015

There has been some real stupid stuff going on in the inter carrier market

One of them was to attach a massive premium €2.50 per minute to calls to
Switzerland sunrise mobile for example.. This was only if your CLI was of
certain countries or invalid.

I don't know anything about voip.ms but perhaps this is whats happening
here, they could be just flagging swiss mobile as a problem due to the
potential of landing charges of 2.50 euro in excess of what they should be
paying and perhaps they're caller ID into the swiss pstn is less than
reliable hence they could fall foul of this.

On Tue, Dec 8, 2015 at 6:39 PM, Julien Sansonnens <julien at jsansonnens.ch>

> 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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