Best practice international GSM setup

[MBK]

Originally Posted by DRNewcomb

I'd just like to mention that in the past whenever we have found some incredible bargain on calls to premium rate numbers, the deal has only lasted for a while and then either the rate went way up or it quit working. This happened with calls to UM and a number of other premium rate services. So, my advice to MBK is to keep a close watch on the system he has chosen, make sure it actually works and have a backup plan.

Yes, you are right. I also had the issue with Jersey numbers suddenly switching from €0.02 to €0.11.

The many free and other low rates have not really changed in 7 years (they are always going down), so I am not worried about them. But regarding the +372 rates, the betamax clones seem to be stable for more than a year now, adding more and more clones at the lower rates as time passes.

But of course this can change. What will I do if this happens?

• I'll still keep the +372 as primary number (free incoming/forwarding in 154 countries)
• and only trigger the callback on the 2nd local/regional SIM in the dual SIM phone.