One Chunnel GSM VoIP Gateway
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Use can add a SMS prefix with mode 2, it will work like mode 1.
z Mode 3 example:
GoIP use SMS Dial Mode 3:
One mobile phone’s number is (86)13800000000, it sends a SMS “8675588228822” to
GoIP’s GSM SIM card. When GoIP device receive this SMS, it will auto to call number as
8675588228822*(86)13800000000, and the caller number is GoIP’s SIP account number.
The sent out signaling as follow:
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