SK 256 ports SMS Modem Pool support insert 256 big sim cards.
It has 8 channels, each channels can be inserted 32 big sim cards
Every Channel work with one port of the modem pool.
8 ports modem pool can work with 1 pic sim bank,16 ports modem pool can work with 2 pics sim banks.
SIM Card Rotating
Solution to solve the SIM card blocked
SMS Limitation for SIM Card/Single
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