GSM SIP Gateway


I am looking for GSM SIP Gateway to be used with Asterisk IP Telephony via SIP trunk as we need to place calls via GSM network using SIM cards to be inserted in this GSM SIP Gateway. So appreciate if someone advise me for good one.
It is required to support 1 or 2 SIM cards in this GSM SIP Gateway.


We used Portech MV series

We have Been using 2N

One question
What is the use case for using a gsm gateway ?

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