Ericsson RBS 2106 Hardware Reference Manual page 399

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Two or more RBSs connected in a chain to the same
transmission system. All the relevant time slots are
dropped out by each RBS. (This function is sometimes
called cascading.)
National Colour System
Network Equipment Building System
Ericsson Network Management System in DXX
The nominal power is the power level defined when
configuring the transceiver.
Neutral terminal in an AC mains connection
Network Terminating Unit
Overlaid/Underlaid
Operation and Maintenance
General term for activities such as configuration,
utilization of channels (frequency bands), cell
planning, system supervision, hardware and software
maintenance, subscriber administration, and so on.
Operation and Maintenance Centre
Operation and Maintenance Link
Layer 2 communication link for operation and
maintenance services on Abis.
Operation and Maintenance Terminal
The OMT is a terminal that supports functions for
handling the RBS on site. The terminal can be a
portable PC.
Operation is the normal, everyday running of the RBS
with full functions.
OPerational Instructions
OverVoltage Protection
Space for Optional Expansion
Primary GSM
Glossary
15 (22)