Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Service Manual Page 157
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TraverseEdge 2020 Applications and Engineering Guide, Chapter 8: Node Synchronization
Release 5.0.x Turin Networks Page 8-3
Figure 8-2 BITS Terminations
Figure 8-3 Synchronization Wire-wrap Post Identification
Line Timing
The TE-2020 system supports line timing where a received clock signal is taken from any incoming
SONET OC-n interface to serve as a synchronization source. This does not include non-optical EC-1 sig-
nals that are available in the DS3/EC1 Tributary Shelf. A single optical interface per tributary shelf can be
used in the timing reference list.
Loop Timing
Loop timing is a special case of line timing that applies to TE-2020 systems that are configured for only
one OC-n interface. In providing the capability to line time its fiber interfaces, the TE-2020 inherently pro-
vides the capability to loop time any of its fiber interfaces. Loop timing entails using the received timing as
a reference to clock the transmitter, effectively “looping” the timing reference back out to the transmit side
of the network.
- TraverseEdge 2020 System 1
- Documentation 1
- Applications and 1
- Engineering Guide 1
- Revision History 3
- Related Documents 3
- Precautions 4
- General Safety Precautions 4
- Standards Compliance 4
- FCC Warning 5
- Contact Information 5
- If You Need Assistance 6
- Calling for Repairs 6
- Acronyms 6
- Table of Contents 9
- Table of Figures 13
- List of Tables 17
- 1.1 Use and Content 19
- 2.1 Overview 21
- 2.2 Hardware Features 21
- Physical Features 24
- Protection Schemes 24
- Physical Interfaces 24
- Operational 25
- Compliance 25
- 2.3 Software Features 26
- 2.3.3 SNMP Traps 28
- 2.4 TE-206 29
- 2.5 DTAU Feature 29
- TL-1 Control of DTAU Function 31
- DTAU Function Performance 32
- 3.1 Unprotected 35
- ORD-050000) 36
- QTY Part 36
- 3.1.3 Optical Hub 37
- 3.2 1+1 Terminal 38
- General Configurations 40
- Equipment Requirements 41
- Tributaries 47
- 3.4.1 UPSR Architecture 53
- UPSR Functions 53
- Unprotected UPSR 55
- 3.5 UPSR versus Linear ADM 56
- 3.6 BLSR vs UPSR 57
- 2-Fiber BLSR Bandwidth 61
- BLSR Functional Block Diagram 61
- Guide (WR-D2020-HWD-050000) 73
- Physical TMUX mode 76
- Portless TMUX Mode 77
- Full Management Visibility 78
- 3.10.5 GbE PLM Operation 83
- Ethernet Functions 84
- 3.10.7 VLAN Tagging 86
- 3.10.8 Ethernet Switching 87
- Generic Framing Procedure 87
- Protection 88
- 3.10.9 Virtual Concatenation 88
- Nomenclature Contents 89
- 3.13 Transparent Overhead 96
- 3.13.1 DCC Applications 97
- OC-48 ring link replaced 101
- SYS-0521-A 102
- K1/K2 Switching Bytes 104
- AIS-L Insertion 105
- 4.1 Introduction 107
- 4.3 OTS2 CCT Protection 108
- 4.4 DS3/EC-1 CCT Protection 109
- 4.5 PLM Protection 109
- 4.5.2 DS3/EC1 PLM 110
- 4.5.3 DS1 PLM 112
- 4.5.4 FAN Protection 112
- Figure 4-12 ETS Fan Tray 114
- 5.1 Electrical Interfaces 115
- 5.1.3 FastE 116
- 5.3 External Interfaces 118
- 5.4 LEI Interfaces 122
- 5.5 Shelf Voltage 122
- 5.6 Fan Power 122
- PLM Power Consumption 123
- Shelf Power Consumption 123
- 5.9 SFP Modules 124
- FastE PLM Power Requirements 125
- 6.1 Introduction 127
- 6.3 LEI Protection 127
- 6.5 Bandwidth Allocation 127
- 6.5.2 OTS2 Shelf 129
- OTS2 Shelf with 1 LEI 129
- Single OTS2 with 2 LEIs 129
- Single OTS2 with 3 LEIs 129
- Single OTS2 with 4 LEIs 130
- 6.5.3 ETS1 Shelf 130
- 6.5.4 ETS2 Shelf 132
- TE-2020 Main 135
- 7.1 Optical Interfaces 137
- 7.1.2 OC-12 PLMs 138
- 7.1.3 OC-48 PLMs 139
- Transmitter EM 140
- 7.1.4 OC-192 PLMs 141
- Parameter 143
- Parameter ITU Unit 144
- 7.1.5 GbE PLMs 145
- Power Penalty (P 149
- Fiber & Splice Loss (L 149
- Chromatic Dispersion (D 150
- System Margin (M) 150
- ) - Calculated 151
- 8.1 Introduction 155
- 8.2 Timing Modes 156
- Line Timing 157
- Loop Timing 157
- Internal Timing Reference 158
- 8.2.1 Clock Modes 158
- 8.2.3 Timing Distribution 158
- 9.1 Overview 161
- 9.4 TN-Relay 166
- 9.5 DCN Configuration 166
- Gaining GNE IP access 167
- Gaining Remote NE IP access 167
- 9.6 DCN Design Guideline 169
- Table 9-5 NE User Limits 170
- 10.1 TL-1 Interface 171
- 10.1.2 Isolated Sub-Networks 172
- 10.1.3 TN-Xpert Architecture 172
- 10.2 Database Management 173
- TE-2020 in an OSIRIS network 175
- Visit our website at: 182
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