Polycom DOC2237A Uživatelský manuál stáhnout pdf (Strana 80)

Chapter 4 - Hardware Description

4-8

Figure 4-7 shows the rear panel of the MGC-50. I/O cards are inserted via the

rear panel. The rear panel also provides access to the fans, power supply

module, network connections, additional communications ports, the main

power switch, AC inlet, and fuse.

Figure 4-7: MGC-50 rear panel with external connector

AC Inlet

Main Switch

Fuse

IO Card

Slot A

Fan

RJ45

Connector

LAN

COM 1

Main Control

Module Cover

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 169 170

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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