Carrier Access Broadmore 1750, User Manual

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Broadmore 1750 - Release 4.6 Glossary-7
Glossary
Constant Bit Rate
An ATM service category that supports a constant or guaranteed rate to transport services such
as video or voice as well as circuit emulation requiring rigorous timing control and performance
parameters.
Circuit Emulation Service (CES)
The ATM Forum circuit emulation service interoperability specification provides
interoperability agreements for supporting constant bit rate (CBR) traffic over ATM networks
that comply with the other ATM Forum interoperability agreements. Specifically, this
specification supports emulation of existing TDM circuits over ATM networks.
End-to-End Timing Requirements
Timing requirements that address the restrictions on the amount of time a cell can take in getting
from source to destination.
Point-to-Point Connection
A connection with two endpoints (default in CES-CBR configuration).
Point-to-Multipoint Connection
A collection of associated ATM VC or VP links, with associated endpoint nodes, with the
following properties:
1.
One ATM link, called the Root Link, serves as the root in a simple tree
topology. When the Root Node sends information, all the remaining
nodes on the connection, called the Leaf Nodes, receive copies of the
information.
2.
Each of the Leaf Nodes on the connection can send information directly
to the Root Node. The Root Node cannot distinguish which Leaf is
sending information without additional (higher layer) information.
3.
The Leaf Nodes cannot communicate directly to each other with this
connection type.