2N Fixed line replacement with 2N SmartGate - Manual v1.1.2 - Manual (Page 84)

Troubleshooting 6.2
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2N® SmartGate does not communicate with PC
 Check the serial cable connection.
 Check the COM number setting on PC.
 Check the COM parameters (1200-115200 bps, 8N1).
 2N® SmartGate is not registered to GSM network.
 A dialing or outgoing call establishing process takes place on SmartGate.
 An incoming call is ringing on SmartGate.