Dolby Laboratories DP503 - Manual (Page 85)

APPENDIX E
GLOSSARY OF ISDN TERMS
Basic Rate Interface (BRI)
An ISDN interface that provides two 64 kbps digital B (Bearer) channels
for voice or data and one 16 kbps signaling D (Delta) channel.
Bonding
Bandwidth ON Demand INteroperability Group, which is an industry
inverse multiplexing standard for dialing, establishing, maintaining, and
terminating n x 56 and n x 64 kbps calls.
Channel
In communications, any pathway between two devices (e.g. computers,
multiplexers). The channel may refer to the physical medium (e.g. coaxial
cable) or to a specific carrier frequency (subchannel) within a larger
channel. Within the ISDN BRI format, there are two B channels.
CPE
Customer Premises Equipment. This equipment is owned by the customer,
and includes items such as an audio codec, terminal adapter, and NT-1. The
RBOC does not typically assume any responsibility for this equipment.
DCE (Data circuit terminating equipment)
A device (e.g. modem) that establishes, maintains, and terminates a session
on a network.
DEMARC Point
This is the physical connection point for the local phone service on the
customer's premises up to which the RBOC assumes responsibility for any
failures that occur. Any failures beyond the DEMARC point are the
responsibility of the customer.
DTE (Data Terminal Equipment)
A communications device (e.g., an audio codec, terminal, or computer) that
is the source or destination of signals on a network.
IXC
Inter Exchange Carrier. IXC is another name for a long distance carrier
such as MCI, AT&T, and Sprint.
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