Reference Manual
Table Of Contents
- RBS 2206 Reference Manual
- Contents
- Preface
- Product Safety Requirements RBS 2000
- Environmental Capabilities
- Scope
- Terminology
- References
- Transport -40 C - +70 C
- Storage -25 C - +55 C
- Handling -40 C - +70 C
- Operation Indoor +5 C - +40 C
- Operation Outdoor -33 C - +40 C
- Operation Outdoor -33 C - +45 C
- Operation Outdoor -33 C - +55 C
- Operation Mast Mounted Equipment -33 C - +45 C
- Operation Mast Mounted Equipment -33 C - +55 C
- Radio Configurations, RBS 2206
- Product Data
- Unit Description, DXU-21
- Unit Description, dTRU
- Unit Decription, CDU-G and CDU-F
- Unit Description, CXU-10
- Unit Description, FCU-01
- Unit Description, DC-Filter 01
- Unit Description, PSU 1200 W
- Unit Description, ACCU/DCCU
- Unit Description, IDM
- Broadcast
- Common Control Channel Handling
- Physical Channel Handling
- Speech and Data Services
- Packet Data Services
- Call Control
- References
- Channel Activation
- Adaptive Frame Alignment
- Asynchronous Handover Detection
- RF Channel Release
- Deactivate SACCH
- Link Establish Indication
- Link Release Indication
- Link Establishment Request
- Link Release Request
- Transparent Message Transmission
- Transparent Message Reception
- SACCH Info Modify
- LAPDm
- Channel Reactivation
- Power Information
- GPRS, Physical Link Layer
- Base Station Power Control
- Channel Measurements
- Discontinuous Transmission
- Frequency Hopping
- Encryption
- Mode Modify
- Mobile Station Power Control
- Short Message Service
- Diversity Supervision
- Synchronization
- Radio Reception
- Radio Transmission
- Frequency Allocation Support
- Restart and Recovery
- Function Change
- Functionality Administration
- Operation and Maintenance Support
- References
- Concepts
- Buttons
- Change RU to Local Mode
- Change RU to Remote Mode
- Change RU to Remote Mode Cancel
- Change SW Power Boost Slave RU to Local Mode
- Loop Control
- RF Loop Test Supervision
- Calendar Time Request
- RSSI Temperature Compensation
- Max Cooling
- Fault Indicator
- BS Fault Indicator
- Operational Indicator
- Tx Not Enabled Indicator
- Local Mode Indicator
- External Alarms Indicator
- DC Disconnected Indicator
- Battery Mode Indicator
- Bat Disconnected Indicator
- AC Fault Indicator
- Test Result Indicators (not used)
- Local Mode in Progress
- Installation Data Handling
- Self Test and Supervision
- Diagnostics and Fault Handling
- Operation and Maintenance Terminal
- External Alarms
- Handling of Auxiliary Equipment
- Climate Protection
- EMC Capabilities
- Transmission Interface Handling G.703 2048 kbit/s
- Transmission Interface Handling DS1 1544 kbit/s
- Terrestrial Link Handling
- Channel Distribution Function
- Transport network O&M functions-DXX Support
- BTS Parameter Limitations
- Glossary
Description 9 (37)
LRN/X-99:083 Rev F 2001-07-17 © Ericsson. Commercial in confidence
Double Transceiver Unit (dTRU)
The dTRU is a two-transceiver Replaceable Unit. Up to six dTRU units can be installed in
one RBS 2206 cabinet, enabling up to 12 TRXs per cabinet.
Figure 4. Double Transceiver Unit.
There are different versions of the dTRU dependent on frequency band and EDGE support.
All dTRUs are HW prepared to handle HSCSD and GPRS, the EDGE dTRU is HW
prepared to also handle the ECSD and EGPRS functionality.
The dTRU supports different ciphering standards. Either A5/1 or A5/2 can be used. The
ciphering is controlled via software.
A hybrid combiner is included inside the dTRU. The combiner can be used, optional,
together with CDU-G to increase the number of TRXs per antenna. It is possible to by-pass
the hybrid combiner by connecting a cable in the front of the dTRU.
Extended Range up to 121 km is supported.
The dTRU is hardware prepared to support performance improvements via software
upgrades, e.g. four-branch RX diversity and Enhanced Interference Suppression (EIS).
Configuration Switch Unit (CXU)
The task of the CXU is to cross connect between the CDU and the dTRU in the receiving
path. The CXU makes it possible to expand or reconfigure a cabinet with a minimum of
moving or replacing RX cables.
Figure 5. Configuration Switch Unit.
The RX inputs/outputs on the dTRU and the CDU are placed in such positions that they
minimise the amount of cable types for connecting the CXU with the dTRU/CDU.