Archive for the ‘ Computer networks ’ Category

Computer telephony integration

Computer telephony integration, also referred to as CTI, is technology that allows interactions on a telephone and a computer to be integrated or co-ordinated.

The following functions can be implemented using CTI.

  • Calling Line Information Display (Caller’s Number, Number Called, IVR Options)
  • Screen Population on answer, with or without using calling line data.
  • On Screen Dialling. (Fast dial, predictive dialling.)
  • On Screen Phone Control. (Ringing, Answer, Hang-up, Hold, Conference etc.)

There are 2 form of CTI.

  • First Party Call Control
    • First Party Call Control is the easiest to implement. This requires a connection between the computer and the telephone. Effectively the computer has a telephone built into it. Only the computer associated with the phone can control it. The computer can control all the functions of the phone, normally at the computer user’s direction.
  • Third Party Call Control
    • Third Party Call Control is more difficult to implement and often requires a dedicated Telephony Server to interface between the Telephone Network and the Computer Network. Information about a phone call can be displayed on the corresponding computer workstation’s screen while instructions to control the phone can be sent from the computer to the telephone network. Any computer in the network has the potential to control any phone in the telephone system. The phone does not need to be built into the computer, and may only need to have a microphone and headset in the circuit, without even a keypad, to connect to the telephone network.

Both types of systems are used in call centers.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.

Computer networks

NETWORK-Library-LAN

A computer network is a system for communication among two or more computers.

Computer networks may be categorized with respect to range:

  • personal area network (PAN)

    • wireless PAN

  • local area network (LAN)

    • wireless LAN

  • metropolitan area network (MAN)

  • wide area network (WAN)

  • (Tiny area network (TAN)

Computer network applications may be categorized with respect to the functional relationships between components:

  • client-server

  • multitier architecture

  • peer-to-peer

Computer networks may be categorized with respect to network topologies:

  • star network

  • grid network

  • toroidal networks and hypercubes

  • tree and hypertree networks

Computer networks may be categorized with respect to specialised functions

  • Storage Area Networks

  • Server farms

Computer networks may be implemented using a variety of protocol stack architectures, computer buses or combinations of media and protocol layers, incorporating one or more of:

  • ARCNET

  • DECnet

  • Ethernet

  • IP

  • TCP

  • UDP

  • AppleTalk

  • Token Ring

  • IPX

  • FDDI

  • HIPPI

  • Myrinet

  • ATM

  • RS-232

  • IEEE-488

  • USB

  • IEEE 1394 aka Firewire, iLink

  • X.25

  • Frame relay

  • Bluetooth

  • IEEE 802.11

  • System Network Architecture

References

Andrew S. Tanenbaum, “Computer Networks” (ISBN 0133499456).

This guide is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.