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
Encryption
This function is initiated during the set up of an encrypted channel
between MS and RBS. The BSC controls initiation of encryption mode.
Description
To set up a dedicated logical channel, encryption mode has to be set.
The RBS supports two encryption modes, "No encryption shall be
used"and "encryption" (encrypted by a specific GSM encryption
algorithm), see /GSM 08.58/. The RBS receives information of which
encryption mode to use, from BSC in a Channel_Activation message
containing "Encryption Information" (via ABIS RSL interface). This
command starts the function, and the traffic channel is encrypted
according to chosen algorithm.
The function is terminated when a "Channel_Activation_ Acknowledge"
is sent to BSC.
26.3 Encryption Mode Change
Purpose
This function is used to change the encryption mode (key and
algorithm) on an established dedicated channel.
Precondition and initiation
Encryption Mode change is defined in the section above.
This function is initiated when RBS receives an Encryption Command
from BSC.
Description
The RBS starts deciphering when the encryption command is received.
A Ciphering Mode Command is sent to start the encryption at the MS.
The MS then sends a Ciphering Mode Complete /GSM 04.08:-9.1.10/
as an acknowledgement to the RBS.
When the RBS receives a Ciphering Mode Complete, the encryption is
initiated in the network, and a DI (Data Indication) is sent back to the
BSC.
230 (421)
EN/LZT 720 0008 R1A
2001-06-26
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