Polycom DOC2237A Manuel d'utilisateur Page 145
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5-1
5
System Maintenance
The MGC is designed with ease of maintenance in mind. Most components
are hot swappable and are accessible directly via the front panel or the rear
panel.
Each module includes LED indicators, which reflect the state of the module.
The LEDs are located on the front panel of the MGC.
All external connectors are located on the rear panel. The main power switch
is also located on the rear panel.
This chapter contains the following sections:
• A description of the controls and LED indicators
• Maintenance procedures
• Troubleshooting procedures
- Polycom MGC 50/MGC 100 1
- Trademark Information 2
- Patent Information 2
- Table of Contents 3
- Before You Begin 9
- Chapter 1 - Before You Begin 10
- MGC Unit Main Features 11
- MGC-50/MGC-100 Specifications 12
- • Conference 14
- • Channel 14
- Scope of Manual 16
- Conventions 17
- List of Abbreviations 18
- Hardware Installation 21
- MGC-100 Hardware Installation 22
- Foam Block 23
- Wood Packing Case 23
- Screw mounting 25
- Secure with nut 25
- Figure 2-3: MCU Rack Mount 26
- Item #3 27
- NEBS Standard 28
- ALARMSCOM 1 29
- 10/100 Mbits 29
- AC Inlet 30
- Main Switch 30
- ISDN network 33
- IP+48 on the MGC+ rear panel 35
- MPI Box 36
- MGC-50 Hardware Installation 41
- Foam Blocks 42
- Mounting the MGC-50 on a Rack 43
- Mounting 45
- and T1-CAS network: 48
- ATM 155 t k 50
- MPIPRI-8 54
- First Entry IP Configuration 55
- Clocking 61
- System Architecture 63
- Backplane 64
- Information Flow 69
- MGC Manager Interface 71
- Power Supply Flow 71
- Hardware Description 73
- MGC-100 Components Location 74
- Main Control 78
- MGC-50 Components Location 79
- Main Control Module 82
- Control Unit Installation 85
- IP Configuration Change 86
- Hard Drive Operation 86
- Inserting the Hard Drive 87
- Removing the Hard Drive 87
- Hard Drive Limitations 88
- Control Bus 90
- Information Highway 91
- Powerplane 91
- Power Supply Module 92
- Power Supply Cord 93
- Power Module in the MGC-50 93
- Alarms Port 94
- Functional Modules 95
- • 12 channels at 128 96
- • 48 channels at 96
- • 96 channels at 96
- • T.120 standard card 98
- • T.120-24 card - 24 98
- Network Interface Module 103
- Block Diagram 105
- Module Port Capacity 108
- IP+ Port Capacities 111
- T1 ISDN line 114
- (23 channels) 114
- MUX Module 116
- MUX Module Architecture 118
- MUX+ Module 119
- MUX+ Card Properties 120
- MUX+ Port Capacity 121
- MUX+ Participant Move Options 123
- MUX+ Resource Report 124
- Audio Module (Standard) 125
- Audio Module Architecture 127
- Audio+ Module 128
- Audio+ Module Architecture 129
- Audio + Port Capacities 129
- Video Module (Standard) 131
- Video+ Module 132
- Data Module 134
- Input/Output Cards 135
- Figure 4-40: Music-IO card 138
- Greet and Guide Hardware Kit 139
- Top latch 140
- Bottom latch 140
- System Maintenance 145
- Controls and Indicators 146
- MGC Unit Rear Panel 151
- Corrective Maintenance 153
- Replacing a Functional Module 154
- Replacing the I/O Cards 154
- Replacing the Fuse 155
- (including the NEBS Unit) 155
- Troubleshooting 163
- Appendix A: Interfaces Pin 165
- Assignment 165
- LAN PIN Assignment 166
- Alarms Port Pin Assignment 166
- RS-232 Pin Assignment 167
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