Carrier Access Broadmore 1750 - Manual (Page 407)

Broadmore 1750 - Release 4.6 Glossary-9
Glossary
User Plane Connection
Signaling operates in the control plane (doing control-type functions such as setting up the
connection). After signaling is finished, it drops out of the way and the established connection
is used to move data. This moving of payload data is done in the user plane. Control and user
planes are parts of the conceptual model of ATM.
Variable Bit Rate
An ATM Forum defined service category supporting variable bit rate data traffic with average
and peak traffic parameters.