Saturday, March 28, 2015








q1876 invention of telephone
q1915 first transcontinental telephone (NY–SF)
q1920’s first automatic switches
q1956 TAT-1 transatlantic cable (35 lines)
q1962 digital transmission (T1)
q1965 1ESS analog switch
q1974 Internet packet voice
q1977 4ESS digital switch
q1980s Signaling System #7 (out-of-band)

q1990s Advanced Intelligent Network (AIN)

Related Posts:

  • 04. Network Topologies Ring Topology In a ring network, every device has exactly two neighbors for communication purposes. All messages travel through a ring in the same direction (either "clockwise" or "counterclockwise"). A failure in any c… Read More
  • 06 TCP IP Read More
  • 6. TCP/IP Protocol TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet. It can also be used as a communications protocol in a private network (either an intranetor … Read More
  • TCP/IP Protocol What is TCP/IP? TCP/IP stands for Transmission Control Protocol / Internet Protocol. It defines how electronic devices (like computers) should be connected over the Internet, and how data should be transmitted between the… Read More
  • 05. OSI Model OSI (Open Systems Interconnection) is reference model for how applications can communicate over a network. A reference model is a conceptual framework for understanding relationships. The purpose of the OSI reference m… Read More

0 comments :

Post a Comment

Networking Education Training

Education Training

education training

Advertising

Sponsor

Powered by Blogger.

Popular Posts

Like on Page Facebook

Visit Blogger

Flag Counter