Glossary D
Centillion 1200N ATM Switch User Manual B-21
NTP 297-8103-903
D
DA
Destination Address: Information sent in the forward direction indicating the
address of the called station or customer.
DA
Destination MAC Address: A six octet value uniquely identifying an endpoint and
which is sent in IEEE LAN frame headers to indicate frame destination.
Data Connections
Data VCCs connect the LECs to each other and to the Broadcast and Unknown
Server. These carry Ethernet/IEEE 802.3 or IEEE 802.5 data fram es as well as flush
messages.
DCC
Data Country Code: This specifies the country in which an address is registered.
The codes are given in ISO 3166. The length of this field is two octets. The digits
of the data country code are encoded in Binary Coded Decimal (BCD) syntax. The
codes will be left justified and padded on the right with t he hexade cimal value "F"
to fill the two octets.
DCE
Data Communication Equipment: A generic definition of computing equipment
that attaches to a network via a DTE.
Default Node Representation
A single value for each nodal state parameter giving the presumed value between
any entry or exit to the logical node and the nucleus.
Demultiplexing
A function performed by a layer entity that identifies and separates SDUs from a
single connection to more than one connection.
DES
Destination End Station: An ATM termination point which is the destination for
ATM messages of a connection and is u sed a s a r ef ere nce point for ABR services.
See SES.