Have a good day! This is Pony from Chinaskyline. Our company is a manufacturer of Voip Gateway with well-tested, good price and strong technical force.
We have SK4-4/SK8-8/SK8-32/SK16-16/SK16-64/SK16-128/SK16-256/SK16-512/SK32-32/SK32-128/SK32-256/SK32-512 Gateway (2G/3G/4G) module available,
SK8-32: 8 ports with 32 SIM slots, one port support insert 4 SIMs.
SK16-64: 16 ports with 64 SIM slots, one port support insert 4 SIMs.
SK32-256: 32 ports with 512 SIM slots, one port support insert 8 SIMs.
SK Gateway support IMEI Change, AT Command, USSD Command, Inter-calling, Inter-sending, SIM Card Rotation, Base Station change, human behavior to reduce SIM Card block in VoIP, SK support to do both Voice and SMS route together,
And we have voice traffic and sms traffic to all over the world.
Please contact me for more details about voip and sms business
