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
Synchronization
Table 120
TF Config. Parameters Selected Synch. Source Type
TF Mode TF Synch.
Source Type
Optional Synch.
HW
No Optional
Synch. HW
Not defined Not defined Optional PCM
Master/
Stand-alone
Not defined
Optional PCM
PCM PCM PCM
Internal
Optional PCM
1)
Slave
Does not care
Other RBS Other RBS
1)
Rejected by the Capability Conformance Check function.
If the transport network is used for synchronization, the executive
reference is taken from PCM interface A at start-up of the RBS on
condition that interface A is available for synchronization and is fault
free. Otherwise PCM interface B is selected if it is available and fault
free.
The executive reference may change from one of the PCM interfaces to
the other when signal on the executive reference is lost (AIS, LOF or
LOS condition on the selected executive reference, see function
Supervision of Reference Source), provided that a signal is detected at
the other interface and that the other reference is marked "available".
The function is terminated when a new executive reference source has
been selected or if the executive PCM reference regains its
synchronization signal before a reselection is attempted or if a
reselection is made to another synchronization source. There is no
momentary change in phase or frequency of the RBS caused by
reselection of synchronization source.
31.5 Hold-Over Operation
Purpose
If the reference signal is considered not to be usable, the RBS cannot
use its values for regulation of the internal oscillator. The Hold-over
operation function keeps the RBS synchronized for a period of time
even though the reference signal is not present.
Precondition and Initiation
The function is initiated when the reference signal is not usable.
Description
The function when initiated freezes the control panel parameters for the
internal oscillator at the present value, meaning that the oscillator
frequency is kept constant except for ageing and temperature drift. The
RBS will still be considered as synchronized and the supervision of the
reference source will continue. After 5 minutes lack of reference signal
known as "Hold-over entered time" a fault is sent to the BSC reporting
EN/LZT 720 0008 R1A
2001-06-26
251 (421)
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