An early dial-up predecessor of the DSL family that uses ISDN transmission technology to support up to 128 Kbps symmetrical service. ISDN is a usage-based service (tarriffed) offered by the telephone companies and is very expensive relative to DSL.
is a type of telephone network which accepts digital signals. Joystick: is a control device in the form of a stick in a PTZ controller used to control the pan and tilt movement of a pan tilt head. No Entries: LAN Local Area Network: connects different computers so that they can communicate with each other. Different connection protocols are possible.
A digital network which is used to transmit voice, video and data between videoconferencing systems