RB900SG LEDs operation

Modem has five LEDs that indicate its operation. The description of the LEDs is presented in the table below.

LED name	Color	Description
POWER	red	Lights when modem is power on
NET TYPE	green	- off: no network, - 1 blink: 2G network, - 2 blinks: 3G network, - 3 blinks: 4G network.
SIGNAL	green	- off: CSQ < 6 or device not registerd to the network, - 1 blink: CSQ >= 6 and CSQ < 16, - 2 blinks: CSQ >= 16 and CSQ < 25, - 3 blinks: CSQ >= 25.
CONNECTION	green	- off: tcp server off, - 1 blink: tcp server on, no client connected, - 2 blinks: tcp server on and client connected to the server.
NET STATUS	green	- on: voice calling - 125ms on, 125ms off: data transfer is ongoing - 1800ms on, 200ms off: idle - 200ms on, 1800ms off: network searching - off: gsm off