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Telecommunication

Telecommunication occurs when the exchange of information between two or more entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves.[1][2][3][4][5][6] The word is often used in its plural form, telecommunications, because it involves many different technologies.

Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs.[7] Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, and loud whistles. Modern technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, andteleprinter, networks, radio, microwave transmission, fiber optics, and communications satellites.

A revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications by Guglielmo Marconi, who won the Nobel Prize in Physics in 1909. Other highly notable pioneering inventors and developers in the field of electrical and electronic telecommunications include Charles Wheatstone and Samuel Morse (telegraph), Alexander Graham Bell (telephone), Edwin Armstrong, and Lee de Forest(radio), as well as Vladimir K. Zworykin, John Logie Baird and Philo Farnsworth (television).


Product Name:
Koontech Waterproof tele
Product model:
Koontech KNSP-18LCD
size:
320*205*100mm
material:
SMC
PDF:
introduction:
Applications:
As Public telephone for indoor or outdoor, Taxi or bus stands or station, Highway call box
Railway, metro, ATM machines side,  Tunnel, Port, Dock, Mines, Generation facilities...
A good ideal telephone for use in wet or corrosive atmospheres
 
Main features : 
1.  Robust SMC 2600 glassfibre reinforced polyester die-cast body, Vandal resistant and tamper-resistant hardware, simple installation.
2.  Auto-dial, as soon as you pick up the hand set the phone will put through. Or one button optional
3.  Weather resistant to IP66 standard, service temperature range from: -35 degree to +75 degree
4.  Magnetic reed hook-switch
5.  Telephone line powered. No external power or battery back up required.
6.  Lightening protection to ITU-T recommendation K.21
7.  Handset: made of special engineering plastic, high anti-knock resistance, Weatherproof, armoured cable optional,    
8.  Hearing Aid compatible receiver, Noise canceling microphone.
9.  Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational.
10.  Selectable 7 minute time out, to release the line if the handset is left off hook.
11.  Ingress Protection: GB4208-93   IP66   EMC: EN55022/EN55024/EN50121-3-2: 2006   FCC
LCD Display
  • Caller ID
  • Dialing number
  • Conversation time counting  
  •  

    Packaging specifications
     
    Machine size:320 *205 *120( mm )     
    Carton size:439 *277 *191( mm )
    Packaging material: pearl cotton, carton
    Gross weight:5.7KG
    Net weight:3.9KG
     
    VOIC OVER IP- SIP (Optional)
    Connection type: RJ45 Socket inside sealed enclosure
    Power supply: External 24V dc
    Call set-up Protocol: Session Initiation Protocol(SIP)
    Configuration: DHCP or STATIC IP address provisioning

     

     

     

     

     

     

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