An operation in which several users share access to a communications channel on a real-time basis, i.e., a user needing to communicate with another user on the same network requests the required circuit, uses it, and when the call is finished, the circuit is released, making the circuit available to other users.
Note: Demand assignment is similar to conventional telephone… (Read More →)

In a communications system, a technique for allocating use of bandwidth among multiple users, based on demand.
Note: DAMA can be implemented in many ways including TDM and FDM.

1. The ratio of (a) the maximum real power consumed by a system to (b) the maximum real power that would be consumed if the entire load connected to the system were to be activated at the same time.
Note: The maximum real power is usually integrated over a specified time interval, such as 15 or 30 minutes, and is… (Read More →)

1. In general, the total power required by a facility.
Note: The demand load is the sum of the operational load (including any tactical load) and nonoperational demand loads. It is determined by applying the proper demand factor to each of the connected loads and a diversity factor to the sum total.
2. At a communications center, the power required… (Read More →)

In ISDN applications, a telecommunications service that establishes an immediate communication path in response to a user request made through user-network signaling.

Acronym for demarcation point.

The transmission path originating from the interface of the access provider's side of a telecommunications circuit Demarcation Point within a premise and ending at the termination point prior to the interface of the edge Customer Premises Equipment. This may include in-segment equipment, media converters and patch cords as required to complete the circuit's transmission path to the edge CPE. See… (Read More →)

That point at which operational control or ownership of communications facilities changes from one organizational entity to another.
Note: The demarcation point is usually the interface point between customer-premises equipment and external network service provider equipment. Synonym network terminating interface.

A mutually synchronized network in which all clocks in the network are of equal status and exert equal amounts of control on the others, the network operating clock pulse repetition rate being the mean of the natural (uncontrolled) clock pulse repetition rates of the population of clocks.

The recovery, from a modulated carrier, of a signal having substantially the same characteristics as the original modulating signal.