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Glossary
ASCII
American Standard Code for Information Interchange
ANI
Automatic Number Identification. A service that identifies the phone
number of the calling party.
ANI-on-Demand
A feature of AT&T ISDN service whereby the user can
automatically request caller ID from the network even when caller ID
does not exist.
ASCII
American Standard Code for Information Interchange.
asynchronous function
A function that returns immediately to the
application and returns a completion/termination event at some future
time. An asynchronous function allows the current thread to continue
processing while the function is running.
asynchronous mode
The classification for functions that operate without
blocking other functions.
Basic Rate Interface
A standard digital telecommunication service,
available in many countries and in most of the United States, with an
ability to digitally transmit both voice and data over standard 64 kbps
lines. A BRI line consists of two 64 kbps channels for a total of 128
kbps.
BC
Bearer Capability
B channel
Bearer channel used in ISDN interfaces. This circuit-switched,
digital channel can carry voice or data at 64,000 bits/sec in either
direction.
Bearer Capability
A field in an ISDN call setup message that specifies the
speed at which data can be transmitted over an ISDN line.
BRI
Basic Rate Interface
Call Reference Number (CRN)
A number assigned by the application to
identify a call on a specific line device.
Call Waiting feature
Call Waiting allows a network to make an outgoing
call while no channel is available for this call, and allows a terminal to