A cryptographic formula that uses two related keys—a public key and a private key—each of which has the characteristic algorithm that, given the public key, it is computationally infeasible to derive the private key. [After X9.62]

1. An access technology that allows voice and high-speed data to be sent simultaneously over local exchange service copper facilities; the technology supports data rates of up to
1. 544 Mb/s when receiving data (downstream rate) and up to 256 kb/s when sending data (upstream rate).
2. A modem technology that provides enhanced and affordable access to the Internet, live… (Read More →)

An encryption system that utilizes two keys, one called a public key (which is known to both the sender and the recipient of encrypted data), and the other, called a private key (known only to the individual sending the data).
Note: Data are encrypted with the private key and decrypted with the public key. Asymmetric encryption allows for the secure… (Read More →)

Synonym unbalanced modulator.

A data communications system that uses asynchronous operation.
Note: The time spacing between successive data characters or blocks may be of arbitrary duration. Synonym start-stop system. [T
1. X1]

A multiplexed transmission system in which the rates of the carrier and its tributaries are not traceable to the same master clocking source.
Note: In this type of system, extra signal elements are usually appended to the individual tributary signals for the purpose of interleaving them at a rate consistent with the carrier rate. [T
1. X1]

A network in which the clocks do not need to be synchronous or mesochronous. Synonym nonsynchronous network.

1. A sequence of operations in which operations are executed out of time coincidence with any event.
2. An operation that occurs without a regular or predictable time relationship to a specified event; e.g., the calling of an error diagnostic routine that may receive control at any time during the execution of a computer program. Synonym asynchronous working.

Time-division multiplexing in which asynchronous transmission is used.

A high-speed multiplexing and switching method utilizing fixed-length cells of 53 octets to support multiple types of traffic.
Note: ATM, specified in international standards, is asynchronous in the sense that cells carrying user data need not be periodic.