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MINI-LINK BAS
Ericsson MINI-LINK BAS User Manual
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MINI-LINK
BAS
Technical Description
2
Table of Contents
Default Chapter
6
Table of Contents
6
1 Introduction
13
General Information
14
Manual Structure
14
General Overview
15
Opportunities
15
Product Benefits
16
Terminology
18
2 System Description
23
Overview
24
System Components
26
Flexnu
28
Odu
28
Act
28
R-Aas
30
Odu
32
C-Aas
33
Control and Management
33
Configuration Limits
34
System Interfaces
34
Intra-System Interfaces
34
Customer Service Interfaces
35
Local Exchange/Isp Interfaces
36
3 Network Architecture
37
Introduction
38
SN R-AAS Stand-Alone
39
Sn C-Aas
40
Generic MINI-LINK BAS Network
42
SN Connection to CP and EM
43
Examples of an Overall Network
44
System Synchronisation
45
Traffic Routing
46
Typical Network Applications
47
4 End-User Services
49
Introduction
50
Data Communication
51
To RFC 1483
52
Ethernet Frames Encapsulation According to RFC 1483
52
CE Services
54
5 Physical and MAC Layers
57
Introduction
58
Physical Layer
59
Index
59
Index
61
Media Control Loops
61
Amplitude Control Loop
62
Frequency Control Loop
62
Clock Phase RCL, Uplink Only
63
Modulation Index RCL, Uplink and Downlink
63
Modulation
64
Radio Link Adaptation
64
Raus
65
Block Diagram
66
Transmitter On/Off Switch
69
LLC Layer
70
TDMA/TDM Framing
70
Downlink TDM Frame
70
Uplink TDMA Frame
71
Frame Alignment
73
Scrambling
73
Fec
73
Performance Monitoring
74
MAC Layer
76
Sign-On
78
Distance Ranging
78
Radio Bandwidth Limitation
79
Processing Flow
80
Downlink Processing Flow
80
Uplink Processing Flow
81
RC Cells Insertion
82
6 Management and
85
Introduction
86
Management System
87
Control Architecture
88
Hierarchy
88
Board Relay
89
ICS/ATM Connection Rules
89
Configuration Requirements
89
Interface Requirements
90
Basic Platform
94
Generic Services
96
Specific Services
98
Interface Handlers
100
Main Applications
100
Connection Handler
101
Equipment Handler
101
Alarm Handler
102
HH (Device Handlers)
102
Mrs & Mri
103
Equipment Management
104
Equipment Hardware Configuration
104
Equipment Software Configuration
104
Equipment Supervisioning
105
Equipment Errors and Error Handling
106
Equipment Audit
106
Connection Management
107
Connection Configuration
107
Cross Connection Re Establishment
108
Connection Supervision
108
Alarm and Event Management
109
Alarm Correlation
109
Alarm Suppression
109
Active Alarm List
109
Alarm and Event Log
110
Alarm Severity
110
Performance Management
111
6.10 Database Management
111
Persistent Data
111
Backup and Restore
112
Atomicity of Transactions
112
6.11 Internal Communication
113
Communication between EM and CP
113
Communication between CP and DP
113
6.12 Recovery Procedures
115
Initial Start
115
Cold Restart
115
System Cold Restart
115
Board Cold Restart
116
Hot Restart
116
7 ATM Transport and Multiplexing
119
Introduction
120
Virtual Connections
121
VP/VC Connection Plan
122
Use of VPI/VCI Values
122
Service Categories
124
Connection Admission Control
124
R-AAS and C-AAS (CE Shelf)
125
Flexnu
126
ATM Fault Management
126
8 Equipment Practice and Power
127
Introduction
128
Hub Site
128
R-AAS, Radio-ATM Access Shelf
128
Psu
129
Fan Unit
129
Rau
130
Antenna
131
Antenna for Point-To-Multipoint Connection
131
Antenna for Point-To-Point Connection
132
AT Site
134
Flexnu
134
Rau
135
Antenna
135
Core ATM - C-AAS (CE Shelf)
136
Front Access Shelf
136
Rear Access Shelf
137
Pou
138
Fan Unit for Front Access AAS
138
Fan Unit for Rear Access AAS
139
Control and Management
140
Pdu
141
Cabinets/Racks
142
Front Access Central Office
142
Rear Access Central Office
146
9 O&M Facilities
147
Introduction
148
Communication Channels
148
AT Setup
149
Fault Detection
149
Alarms
149
Events
154
Test Loops
155
RN Near-End Loops
155
AT Near-End Loops
155
AT Far-End Loops
156
Performance Monitoring
157
Signals Monitoring
158
Unit Replacement
158
Local Supervision Interface
159
System Upgrade
162
Install SW Upgrade File
163
Download Modules
163
Install New Management System
163
Stop CP
163
Install New CP Software
163
Upgrade Network Database
163
Start Control Processor in "Upgrade Mode
164
Execute Upgrade
164
Restart Control Processor
165
Software Rollback
165
Case B
166
Frequency Range
171
10 Technical Data
171
System Features
172
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Ericsson MINI-LINK BAS Specifications
General
Brand
Ericsson
Model
MINI-LINK BAS
Category
Wireless Access Point
Language
English
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