In ISDN applications, synonym contention.

1. A service feature or technique used to permit or deny use of the components of a communication system.
2. A technique used to define or restrict the rights of individuals or application programs to obtain data from, or place data onto, a storage device.
3. The definition or restriction of the rights of individuals or application programs to obtain… (Read More →)

1. In security, a list of entities, together with their access rights, that are authorized to access a resource.
2. [A] mechanism implementing discretionary and/or mandatory access control between subjects and objects. [INFOSEC-99]
3. A list associated with an object specifying the access rights of subjects to that object [CESG].
4. A set of control attributes. It is a list,… (Read More →)

1. In security, a hardware, software, or firmware feature, operating procedure, or management procedure that (a) permits authorized access to a system, such as a communications, computer, and data processing system, (b) prevents unauthorized access to the system, and (c) is considered to have failed when unauthorized access is permitted or when authorized access is prevented. [From Weik '96]
2.… (Read More →)

A message that is a user request, a resource controller response, or a request/response between resource controllers.

1. A set of rules, part of a security policy, by which human users, or their representatives, are authenticated and by which access by these users to applications and other services and security objects is granted or denied [ECMATR46].
2. The set of rules that define the conditions under which an access may take place [10181-3].
3. A set of… (Read More →)

Deprecated term. See directional coupler.

A three-digit alpha code assigned to identify Incumbent Local Exchange Carriers (ILECs) and Competitive Local Exchange Carriers (CLECs) associated with CICs.

1. Access failure caused by the issuing of a system blocking signal by a communications system that does not have a call-originator camp-on feature.
2. Access failure caused by exceeding the maximum access time and nominal system access time fraction during an access attempt. Synonym system blocking.

In automatic direct outward telephone dialing, a digit, often a 1, or a 9, that (a) enables access to an outside facility, e.g., a PBX or local exchange, and (b) is prefixed to the specific number being dialed.
Note 1: Throughout the United States, an access digit, usually 1, must be prefixed to an area code before dialing the area… (Read More →)