SkyLine SK GoIP, Руководство пользователя

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GoIP User Manual

Port Setting
The SIM cards mobile network jump among different frequency to search base station.
Some SIMs only support one frequency or dual band, to save the mobile registration
time, select the correct
Frequency Band
and
Lock The Operator
.
The gateway hardware modules are controlled by “AT Command”, and the SIM can get
extend service by sending USSD Command from SIM operator. Checking frequency is
supported to limit in “Time Interval”. And calls can happen directly in “Manually Call” to
callee number typed, it’s easy to check SIMs inside if they are working, no need to
take out SIM and insert it to mobile phone anymore.