CO
Central Office. Refers to equipment located at a Telco or service provider's office.
CPE
Customer Premises Equipment located in a user's premises
DHCP (Dynamic Host Configuration Protocol)
DHCP is software that automatically assigns IP addresses to client stations logging
onto a TCP/IP network. DHCP eliminates having to manually assign permanent IP
addresses to every device on your network. DHCP software typically runs in servers
and is also found in network devices such as Routers.
DMT
Discrete Multi-Tone frequency signal modulation
Downstream rate
The line rate for return messages or data transfers from the network machine to the
user's premises machine.
DSLAM
Digital Subscriber Line Access Multiplex
Dynamic IP Addresses
A dynamic IP address is an IP address that is automatically assigned to a client station
(computer, printer, etc.) in a TCP/IP network. Dynamic IP addresses are typically
assigned by a DHCP server, which can be a computer on the network or another piece
of hardware, such as the Router. A dynamic IP address
may change every time your computer connects to the network.
Encapsulation
The technique layer protocols in which a layer adds header information to the
protocol data unit (PDU) from the layer above. As an example, in Internet
terminology, a packet would contain a header from the physical layer, followed by a
header from the network layer (IP), followed by a header from the transport
layer (TCP), and followed by the application protocol data.
Ethernet
One of the most common local area network (LAN) wiring schemes, Ethernet has a
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