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Glossary
One of five categories of network management defined by ISO for the management of ISO networks.
accounting
Accounting management subsystems are responsible for collecting network data that relates to resource
management
usage. See also configuration management, fault management, performance management, and security
management.
Data structure or logical convention used to identify a unique entity, such as a particular process or
address
network device.
asymmetric digital subscriber line. An xDSL technology in which more bandwidth is delivered
ADSL
downstream (from the CO to the customer site) than upstream over a single copper twisted pair.
Compare with IDSL, SDSL, and SHDSL. See also DSL.
A notification that a traffic signal has degraded or failed or that equipment is malfunctioning. See also
alarm
event and trap.
amplitude modulation. A modulation technique by which information is conveyed through the
AM
amplitude of the carrier signal. Compare with FM and PAM. See also modulation.
See ANSI.
American National
Standards Institute
See AWG.
American Wire
Gauge
See AM.
amplitude
modulation
American National Standards Institute. An organization that coordinates, develops, and approves
ANSI
international and U.S. standards for, among other things, communications and networking. ANSI is a
member of ISO. See also ISO.
automatic protection switching. A method that allows transmission equipment to recover automatically
APS
from failures, such as a cut cable.
See ADSL.
asymmetric digital
subscriber line
A method of transmitting data in which individual characters are encapsulated in control bits (called
asynchronous
communications
start and stop bits) that designate the beginning and end of each character. Asynchronous transmission
allows communication without precise clocking.
See ATM.
Asynchronous
Transfer Mode
Asynchronous Transfer Mode. The international standard for cell relay in which multiple service types
ATM
(voice, video, or data, for example) are transmitted in fixed-length (53-byte) cells. ATM offers fast
packet technology, and real-time, demand-led switching for efficient use of network resources.
See AAL.
ATM adaptation
layer
See xTU-C.
ATU-C
See xTU-R.
ATU-R
Cisco 6260 Hardware Installation Guide
GL-8
OL-2365-02
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