Network facilities

This page deals with network facilities including;

Point to point

Examples

Interlnk connecting two PC's

A connection between two computers in a ring network

A dedicated line between two computers.

Links more than two stations at one time.
One station needs to be designated as the control or master station or each station needs to monitor the cable to see if the cable is in use.

Example

nwfsw.gif (4109 bytes)

Allows a single station to connect to other stations.
In the case of an analog telephone line once the switch is made the connection becomes point to point until the connection is dropped.

Example

nwfsw.gif (4109 bytes)

A data network containing intelligent switching nodes. Stations send data to the Data switching exchange (DSE). This data is then cut into equal length packets with a destination header, and sent to another DSE.

Example

Dial up

A data service that transmits data in digital, rather than analog format.
DDS lines are 4-wire circuits (transmit pair, receive pair) linked by special repeaters and separated from analog lines.
ADSL (asynchronous digital subscriber line) works over regular phone lines (copper wires) using digital modems.

These conditions enable DDS lines to;