1. [The] Bell-La Padula security model rule allowing a subject write access to an object only if the security level of the object dominates the security level of the subject. [INFOSEC-99]
2. A Bell-LaPadula security model rule allowing a subject write access to an object only if the security level of the subject is dominated by the security level of… (Read More →)

A passive optical coupler having a number of input and output ports, used in network applications.
Note: An optical signal introduced into any input port is distributed to all output ports. Because of the nature of the construction of a passive star coupler, the number of ports is usually a power of 2; i.e., two input ports and two output… (Read More →)

See network topology.

Synonym spiral-four cable.

See network topology.

Synonym go-ahead notice.

Synonym go-ahead notice.

See A-condition, start signal.

1. A signal that prepares a device to receive data or to perform a function.
2. In start-stop transmission, a signal at the beginning of a character that prepares the receiving device for the reception of the code elements.
Note: A start signal is limited to one signal element usually having the duration of a unit interval.

An on-hook signal indicating customer installation (CI) readiness to receive network outpulsing that is used in conjunction with controlled outpulsing. The on-hook signal that ends the wink-start signal or delay-dial signal is the start-dial signal. [T1.405-1989]