Glossary:

ATIS Telecom Glossary

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

cipher text

1. Enciphered information. [INFOSEC-99]
Note: Cipher text is the result obtained from enciphering plain or encoded text.
2. Data produced through the use of encipherment. The semantic content of the resulting data is not available.
Note: Cipher text may itself be input to encipherment, such that super-enciphered output is produced [7498-2].

cipher text auto-key

Cryptographic logic that uses previous cipher text to generate a key stream. [INFOSEC-99]

ciphertext string

In cryptography, ciphertext that is formed by encrypting concatenated encryption elements. [After X9.23]

ciphony

The process of enciphering audio information, resulting in encrypted speech. [INFOSEC-99]
Note: "Ciphony" is a contraction of "ciphered telephony . "

CIPID

Contact Information in Presence Information Data Format

CIR

Committed Information Rate

circuit

1. The complete path between two terminals over which one-way or two-way communications may be provided.
2. An electronic path between two or more points, capable of providing a number of channels.
3. A number of conductors connected together for the purpose of carrying an electrical current.
4. An electronic closed-loop path among two or more points used for signal… (Read More →)

circuit identification code

Information identifying a circuit between a pair of exchanges, for which signaling is being performed (14 bits in the ISDN user part). [T1.110-1987]

circuit kilometers

The route kilometers of revenue producing circuits in service, determined by measuring the length in terms of kilometers, of the actual path followed by the transmission medium. [47 CFR Pt.36-A]

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