pabx
111Digital Private Network Signalling System — The Digital Private Network Signalling System (DPNSS) is a network protocol used on digital trunk lines for connecting two PABX. It supports a defined set of inter networking facilities. DPNSS was originally defined by British Telecom. The… …
112DASS2 — Digital Access Signaling System 2 (DASS2) is an obsolescent protocol defined by British Telecom for digital links to PSTN based on ISDN. Although still available on request, it has been superseded by ETS 300 ( EuroISDN ). DASS2 is an improved… …
113Zilog Z80 — One of the first Z80 microprocessors manufactured; the date stamp is from June 1976. Produced 1976 Common manufacturer(s) Zilog …
114Inside plant — In telecommunication, the term inside plant has the following meanings: *All the cabling and equipment installed in a telecommunications facility, including the main distribution frame (MDF) and all the equipment extending inward therefrom, such… …
115Queueing theory — is the mathematical study of waiting lines (or s ). The theory enables mathematical analysis of several related processes, including arriving at the (back of the) queue, waiting in the queue (essentially a storage process), and being served by… …
116Basic rate interface — (BRI, 2B+D, 2B1D) is an Integrated Services Digital Network (ISDN) configuration defined in the physical layer standard I.430 produced by the ITU. This configuration consists of two 64 kbit/s bearer channels (B channels) and one 16 kbit/s data… …
117Numbering plan — A numbering plan is a type of numbering scheme used in telecommunications. This is a set of rules used for making numbers. For example, most telephone numbers belong to the E.164 numbering plan, though that won t include internal extensions in… …
118Interactive voice response — IVR redirects here. For other uses, see IVR (disambiguation). Interactive voice response (IVR) is a technology that allows a computer to interact with humans through the use of voice and DTMF keypad inputs. In telecommunications, IVR allows… …
119Appropriate technology — (AT) is technology that is designed with special consideration to the environmental, ethical, cultural, social and economical aspects of the community it is intended for. With these goals in mind, AT typically requires fewer resources, is easier… …
120Voicemail — (also known as voice mail, voice message, or voice bank) is a computer based system that allows users and subscribers to exchange personal voice messages; to select and deliver voice information; and to process transactions relating to… …
