Glossary; Abc - Polycom ViewStation SP128 User Manual

Glossary

ABC

Annex D
ATT 4ESS
ATT 5ESS
ADSL
Analog Line
© Polycom, Inc.
The second frame relay standard extension
dealing with the communication and
signaling between customer premises
equipment and frame relay network
equipment for the purpose of querying
network status information.
AT&T's large toll telephone switch. It will
handle 100,000 trunks and over 500,000
attempts at making a call each hour.
AT&T Class 5 digital central office.
Asymmetrical Digital Subscriber Line. A
communications technology used to transmit
digital data over telephone wires. It is
expected to transmit up to six megabits per
second and be used for video-on-demand
services to telephone company customers.
A telephone line that transmits and receives
signals in variable, continuous waveforms
that are generated by telephones, fax
machines, models, etc. The signal
transmitted is a true electrical representation
of the original source audio, as opposed to a
"coded" digital signal which must be
"decoded" at the far end.
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