The GSM Emergency Telephone System is for call assistance and accidents reporting to the Traffic Control Center. It consists of a traffic control center and Emergency Telephone Box (ETB), located on both sides of the highway, utilized the GSM mobile phone network for connection. On the ETB there is a attention call button to call traffic Control Center. Upon pressing the button, the caller are in voice communication with the Communication control centre. All calls are recorded.

	Digital transmission for voice and data between ETB and control centre using the GSM Network
	ETB powered using solar panel power eliminating the cable laying from control centre.
	Auto diagnostic.
	English GUI Interface
	Several calls can be managed at the same time by having more GSM modem at the control center
	All Incoming calls recorded for track record.
	Auto backup for audio recording
	Easy and cheap maintenance due to its modular structure
	Good Quality Hands-free Speaker and Microphone
	Calling Button for Calling Control Center and Ringing Sounder to alert incoming calls.
	System easy to install
	Automatic and manual health status check
	Battery Capacity monitoring
	Anti-vandalism auto detection
	Low cost