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
Call Control
20.9 Link Establishment Request
Purpose
To establish a signal link between MS and network.
Precondition and Initiation
Channel combinations supported are defined in section Channel
Activation above.
This function is applicable for:
•
SAPI-3 links on SDCCH, SACCH/T and SACCH/M
The function is initiated when the RBS receives an ESTablish REQuest
from BSC.
Description
The following procedure is used by BSC to request the establishment of
a link layer connection in multiframe mode on the air interface /
GSM 08.58:3.2/.
The procedure starts when the RBS receives an ESTablish REQuest
message from BSC. RBS then establishes the link by sending an SABM
frame. Upon reception of the acknowledgment (UA-frame) from MS,
RBS sends an ESTablish CONFirm message to BSC. It is the network
(BSC) that takes initiative for the establishment. Measurement reports
are one type of message which can be sent on the signal link.
P003018A
RBS
BSC
EST CONF
MS
SABM
UA
EST REQ
Figure 90 Link establishment request
Messages queued for transmissions are lost if the link is re-established.
When the link is established, an ESTablish CONFirm /GSM 08.58:3.5/
is to be sent to the BSC.
• The Link Establishment procedure is in accordance with /
GSM 08.58:3.2/ and /GSM 04.06:4.1/.
• Fault Handling related to the link establishment procedure is in
accordance with /GSM 04.06:5.4.1/.
20.10 Link Release Request
Purpose
To release a signal link between MS and network.
EN/LZT 720 0008 R1A
2001-06-26
201 (421)
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