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
Discontinuous Transmission
/GSM:06.42/ Voice Activity Detection (half rate speech)
/GSM:06.81/ Overall DTX Operation (enhanced full
rate speech)
The downlink DTX function is supported for channel modes:
•
TCH speech, full rate (GSM speech alg. version 1), uni-directional
•
TCH speech, full rate (Speech full rate version 2), uni-directional
•
TCH speech, full rate (GSM speech alg. version 1), bi-directional
•
TCH speech, full rate (Speech full rate version 2), bi-directional
•
TCH speech, half rate
•
TCH data, 14.4 kbit/s, non-transparent, uni-directional
•
TCH data, 9.6 kbit/s, non-transparent, uni-directional
•
TCH data, 4.8 kbit/s, non-transparent (Only half rate supported)
• TCH data, 14.4 kbit/s, non-transparent, bi-directional
•
TCH data, 9.6 kbit/s, non-transparent, bi-directional
For all other Channel Modes, the DTXd indicator is ignored, since the
DTX function is not applicable.
Channel combinations supported /GSM:05.02:6.4/:
•
(i) TCH/F + FACCH/F + SACCH/TF
• (ii) TCH/H(0,1) + FACCH/H(0,1) + SACCH/TH(0,1)
•
(viii) TCH/F + FACCH/F + SACCH/M
• (ix) TCH/F + SACCH/M
• (x) TCH/FD + SACCH/MD
The downlink DTX function is enabled when a
CHANNEL_ACTIVATION message, or a MODE_MODIFY message
with the DTX downlink indicator set, is received from the BSC.
The downlink DTX function for speech is initiated when a speech
frame containing comfort noise parameters, is received from the RTC
(Remote Transcoder).
The downlink DTX function for non-transparent data is initiated when a
complete RLP (Radio Link Protocol) frame, with all E1-bits /
GSM:04.21/ set to 1, is received from the RTC.
DTX Handling Speech
The usage of downlink DTX (ON/OFF) is indicated (as a flag) in the
full rate RTH-SPEECH-IND/RTH-E-SPEECH-IND, half rate RTH-
SPEECH-IND and RTH- IDLE SPEECH-IND frames to the RTC. To
detect if a full rate RTH-SPEECH-IND/RTH-E-SPEECH-IND or half
rate RTH-SPEECH-IND frame (received from the RTC) contains
speech or comfort noise parameters /GSM:06.32 / or /GSM:06.42/, RBS
analyses the SID code word /GSM:06.12:5.2/, /GSM:06.62:5.3/ or /
GSM:06.22:5.3/.
224 (421)
EN/LZT 720 0008 R1A
2001-06-26
© Ericsson Radio Systems AB
— All Rights Reserved —