3Com 3C10402B Administrator's Manual page 552

552 G
LOSSARY
CSU
data compression
delayed ringing
delayed ringing
pattern
demand priority
access
DHCP
DID/DDI
direct mail transfer
domain
DSP
DSU/CSU
Channel Service Unit. Data transmission equipment to repeat the signal
from the carrier and link to CPE. Vendors add value to CSUs by adding
performance monitoring and management features.
CTI Computer Telephony Integration. A generic name for the technology that
connects computers and telephone systems through software
applications.
D
A method of reducing the amount of data to be transmitted by reducing
the number of bits needed to represent the information.
Prevents a telephone on a shared line from ringing until the incoming call
has rung on other telephones a set number of times.
The definition for the order in which telephones ring and how many
times each telephone rings.
A method for supporting time-sensitive applications such as video and
multimedia as part of the proposed 100BASE-VG standard offering
l00Mbit/s over voice-grade UTP cable.
Dynamic Host Configuration Protocol. A method by which devices are
assigned temporary, renewable IP addresses by a server when the devices
become active on the network.
Direct Inward Dial/Direct Dialing Inward. A feature that allows outside
calls to reach an internal extension without going to an operator or
Automated Attendant.
Transfers a caller directly to another user's voice mail without requiring
them to wait through ringing and without interrupting the recipient.
A group of nodes on a network that form an administrative entity. A
domain can also be a number of servers that are grouped and named to
simplify network administration and security.
Digital Signal Processor. A special-purpose CPU tailored to manage
complex mathematical functions. A DSP takes an analog signal and
reduces it to numbers so its components can be isolated, sampled, and
rearranged more easily than in analog form.
Digital (or Data) Service Unit/Channel Service Unit. A pair of
communications devices that connect an in-house line to an external