Avaya BCM 2.0 Programming Guida Utente Pagina 403

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Glossary 403
P0911588 Issue 01 Enterprise Edge Programming Operations Guide
D
D channel (Data channel)
An ISDN standard transmission channel which is packet-switched, and is used for
call setup, signalling and data transmission.
Data channel
See D channel.
Data link connection indentifier (DLCI)
TheDLCIisusedtoidentifyaPVCinframerelaynetworks.
Defaults
The settings for all features when the system is first installed. Settings are changed
from their defaults in programming.
Delayed Ring Transfer (DRT) to prime
After a specified number of rings, this feature transfers an unanswered call on an
external line to the prime telephone associated with that line. This feature is
activated under Feature settings in System programming.
destination code
A two- to seven-digit number that the system interprets and then translates into the
digits that you want dialed out. Both the code and its associated dialed digits are
assigned under Routing service in Services programming.
DHCP
See Dynamic Host Configuration Protocol.
dialing restriction
See Restriction filter.
dial-up connection
A dial-up connection is a temporary connection between computers that is
established over an analog or digital phone line.
Differentiated Services (DiffServ)
DiffServ is an implementation methodology for QoS service for IP networks.
DiffServ is a rule based methodology intended to improve network performance.
Instead of applying faster, more advanced technology, networks are managed by
appropriate network policies. With DiffServ there is a cost associated with higher
quality services and a risk with lower quality services.
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