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Originally Posted by GadgetKen
Intrigued by Telna's status as an actual cellular phone company with 1900 mhz 2G GSM service in St. Louis, MO according to an FCC filing. Must make it easier to negotiate roaming agreements with other carriers.
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Given their tiny customer base as a local wireless carrier and the resulting low volume of airtime they will hardly be able to negotiate favourable roaming rates with other carriers. What actually puts them in a position to offer good rates is that they recently launched an IMSI roaming hub:
Telecom North America launches the multi-IMSI roaming hub? | Prepaid MVNO
In simplified terms Telna can now buy airtime through other participating carriers around the world and so benefit from the better wholesale rates those carriers get on other networks.
Do existing Telna SIMs already support mulitple IMSIs? Has anyone looked up which MCC/MNC tuple their SIMs use and if it changes in some countries? Can you perhaps select IMSIs from the SIM toolkit menu?