Search results
Results from the WOW.Com Content Network
Efforts to find a way to transmit telegraph signals without wires grew out of the success of electric telegraph networks, the first instant telecommunication systems. [23] Developed beginning in the 1830s, a telegraph line was a person-to-person text message system consisting of multiple telegraph offices linked by an overhead wire supported on ...
In a punched-tape system, the message is first typed onto punched tape using the code of the telegraph system—Morse code for instance. It is then, either immediately or at some later time, run through a transmission machine which sends the message to the telegraph network. Multiple messages can be sequentially recorded on the same run of tape.
MMDS microwave dish. Multichannel multipoint distribution service (MMDS), formerly known as broadband radio service (BRS) and also known as wireless cable, is a wireless telecommunications technology, used for general-purpose broadband networking or, more commonly, as an alternative method of cable television programming reception.
English: These Regulations introduce new provisions and consolidate existing legislation which exempts the establishment, installation and use of certain radio equipment which comply with certain terms, provisions and limitations, from the requirement to be licensed under section 8(1) of the Wireless Telegraphy Act 2006 (c. 36).
Intrusion prevention system Security "NIST - Guide to Intrusion Detection and Prevention Systems (IDPS)". 2007-02. Retrieved 2010-08-24. IS-IS: Intermediate System to Intermediate System (routing protocol) Internet Layer ISO/IEC 10589:2002: ISDN: Integrated Services Digital Network Telecom IEC Area 716-xx: ISP: Internet service provider Telecom
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
A telegraph system consisted of two or more geographically separated stations linked by wire supported on telegraph poles. A message was sent by an operator in one station tapping on a telegraph key , which sent pulses of current from a battery or generator down the wire to the receiving station, spelling out the text message in Morse code .
In 1894, Italian inventor Guglielmo Marconi began developing a wireless communication using the then-newly discovered phenomenon of radio waves, showing by 1901 that they could be transmitted across the Atlantic Ocean. [8] This was the start of wireless telegraphy by radio. Audio radio broadcasting began experimentally in the first decade of ...