Glossary:

ATIS Telecom Glossary

Search Keyword By: R

Select a term name to open its entry and any media references. Longer definitions end with a “Read More” link.

ringing signal

1. The alternating current (ac) component of the alerting signal. [T1.401-1988] [T1.407-1990]
2. An ac signal applied across the network interface (NI) of such magnitude, frequency, and duration to cause an electromechanical ringer to ring. Used to alert the customer installation (CI) of an incoming call. [T1.401-1998]

rip

Slang. To encode, compress, transfer, and copy digitized audio or video data from a compact disc (CD) to a computer hard drive.
Note: Ripping is usually done with the intent of transferring those files to another user or another device.

rip cord

Of an optical cable, a parallel cord of strong yarn that is situated under the jacket(s) of the cable for the purpose of facilitating jacket removal preparatory to splicing or breaking out.
Note: The rip cord is exposed by carefully removing or severing a portion of the jacket near the end of the cable. It is then grasped with the… (Read More →)

ripple voltage

1. In a dc voltage, the alternating component that is residually retained from rectification of ac power, or from generation and commutation.
2. In a dc voltage, the alternating component that is coupled into a circuit from a source of interference.

RISC

Acronym for reduced instruction set chip, reduced instruction set computing.
Note: Pronounced "risk. "

rise time

In the approximation of a step function, the time required for a signal to change from a specified low value to a specified high value. Typically, these values are 10% and 90% of the step height.

risk

1. The possibility that a particular threat will exploit a particular vulnerability of a data processing system. [2382-pt.8]
2. The likelihood that a successful attack will be mounted against a computer system. Risk is a function of both vulnerability and threat [CESG].

risk acceptance

A managerial decision to accept a certain degree of risk, usually for technical or cost reasons. [2382-pt.8]

risk analysis

1. A systematic method of identifying the assets of a data processing system, the threats to those assets, and the vulnerability of the system to those threats. [2382-pt.8]
2. In COMSEC (communications security), an organized method of estimating or calculating the probability of compromise. [After X9.49]
3. Synonym [in INFOSEC] risk assessment.

risk assessment

1. See risk analysis.
2. [In INFOSEC, the] process of analyzing threats to and vulnerabilities of an information system (IS) and the potential impact the loss of information or capabilities of a system would have on national security. The resulting analysis is used as a basis for identifying appropriate and cost-effective countermeasures. [INFOSEC-99]
3. The process of reviewing the threats… (Read More →)

Showing 421–430 of 518 results