Triple-Play Service Deployment

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268 Figure A.7 Reflective event deviation 2. Attenuation deviation When analyzing the pattern comparison, if an attenuation deviation along a fiber section is detected, then the affected fiber is the one that ends at the same distance that the deviation stops appearing (Figure 3.29). In this example, branch number six is affected. Figure A.8 an attenuation deviation Appendix A: PON Reflectometer Trace Analysis
Appendix A: PON Reflectometer Trace Analysis Fault localization and attenuation estimation After locating the distance where the deviation begins to appear, the location of the fault can be identified. Eventually the fault can be associated with an event recorded in the reference table. Due to the mixing of multiple branches, fault attenuation cannot be directly calculated from the attenuation deviation between the two curves (Figure A.9). Figure A.9 Identifying the location and attenuation of a fault Using a pattern simulator, though, a virtual attenuator can be inserted into the affected branch and the attenuation can be increased until the same deviation from the reference pattern is achieved. This technique allows for an approximation of the attenuation level of the fault. Accuracy and Limitations of the Method Because this type of analysis involves measurements, it is necessary to point out its accuracy and limitations. As far as accuracy is concerned, the main source of error lies in the reality of the simulator models and data entry uncertainties. For example, optical splitters reverse and forward parameters may need to be entered. The fiber backscatter coefficient deviations add some uncertainty on the attenuation estimation and could be integrated into the theoretical formula. 269
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Triple-Play Service Deployment A Co
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Copyright 2007, JDS Uniphase Corpor
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Recommended test tools . . . . . .
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VoIP Service Quality . . . . . . .
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Acknowledgements The JDSU Triple-Pl
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In North America, cable operators h
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Finally, securing all these service
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2 The Vision—Reliable Triple-Play
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4 The Building Blocks Chapter 1: Th
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6 Development/ Production - Compone
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8 Chapter 1: The Vision-Reliable Tr
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10 Chapter 1: The Vision-Reliable T
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16 Triple-Play Service Delivery ove
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18 Chapter 2: Triple-Play Service D
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20 Bandwidth Chapter 2: Triple-Play
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24 Encapsulation DA Chapter 2: Trip
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26 ISP/Internet ASP & Video Headend
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36 centralized location, the abilit
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38 Deploying and Troubleshooting Fi
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40 For “brownfield” or overlaid
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42 BPON uses time division multiple
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44 Voice IP Data Video Figure 3.3 A
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46 From the splice enclosure, signa
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48 1490nm laser/ 1310nm meter OLT 1
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50 Central Office Depending on the
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52 Chapter 3: Deploying and Trouble
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58 Acceptance testing between the s
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60 Once customers have been establi
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62 When there is a physical layer f
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66 Acceptance testing is always per
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68 1490nm laser/ 1310nm meter OLT 1
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70 Recommended test tools Whether t
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74 These effects result in an easy-
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76 Another approach uses a loss tes
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78 Selective Optical Power Meters A
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82 Troubleshooting the Copper Plant
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84 Chapter 4: Troubleshooting the C
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90 Capacitive balance Another metho
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92 TDR Response (V) 7.3 3.6 Figure
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94 Loop length also can be measured
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96 Filter Technology Lower 3dB Uppe
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100 Chapter 4: Troubleshooting the
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102 TDR capabilities A time domain
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104 Bridged taps Bridged taps, or l
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112 Physical Layer Test - Foreign V
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114 Troubleshooting the Premises Wi
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118 R-Value Testing the Premises Ne
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122 Typical Symptom Fault Condition
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124 Fault Common Cause Diagnosis Go
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126 Locating and resolving coax pro
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130 Using advanced signal processin
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132 Relative Frequency % 5 4 3 2 1
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142 Troubleshooting Video in the He
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144 MPEG-2 TS over RF Understanding
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146 elementary streams (ES). Each d
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148 Chapter 6: Troubleshooting Vide
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150 MPEG Technology Chapter 6: Trou
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152 MPEG Video Syntax MPEG-2 System
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168 Interoperability and segmentati
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178 Troubleshooting Video Service i
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180 Figure 7.2 A schematic diagram
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186 STB DSL Modem EPG/Multicast Inf
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188 RTSP Latency PAUSE Latency PLAY
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192 Video Service Troubleshooting:
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194 Standard troubleshooting steps
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196 Dropped packets indicate a prob
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200 Troubleshooting Voice over IP T
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202 Control plane protocols Real Ti
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204 Since the 64 Kbps bandwidth req
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206 Chapter 8: Troubleshooting VoIP
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208 Chapter 8: Troubleshooting VoIP
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210 Network Equipment Installation
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212 Figure 8.5 PVA-1000 While check
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214 Using handheld IP phone emulato
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216 Provisioning Tests Purpose: To
Page 232 and 233: 218 Solving Voice Quality Problems
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Page 236 and 237: 222 Troubleshooting High Speed Data
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Page 242 and 243: 228 R ate (Mbits /s ) performance o
Page 244 and 245: 230 Chapter 9: Troubleshooting High
Page 248 and 249: 234 The JDSU HST-3000 provides comp
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Page 260 and 261: 246 Chapter 10: Service Assurance f
Page 266 and 267: 252 b. Correlate network performanc
Page 268 and 269: 254 Passive service monitoring Hard
Page 272 and 273: 258 Measurable Benefits Successful
Page 276 and 277: 262 PON Reflectometer Trace Analysi
Page 278 and 279: 264 Theoretical Method of PON Refle
Page 280 and 281: 266 Learning Acquisition Phase The
Page 284 and 285: 270 Appendix A: PON Reflectometer T
Page 286 and 287: 272 Glossary AAL5 ATM Adaptation La
Page 288 and 289: 274 Glossary Block A set of 8x8 pix
Page 290 and 291: 276 Glossary Digital Television A g
Page 292 and 293: 278 Glossary ETR 290 ETSI recommend
Page 294 and 295: 280 Glossary I/F Interface ICMP Int
Page 296 and 297: 282 Glossary MGT Master Guide Table
Page 298 and 299: 284 Glossary Multiplex (n) A digita
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Page 302 and 303: 288 Glossary ST Stuffing Table. An
Page 304 and 305: 290 Notes: Notes
Page 306 and 307: 292 Notes
Page 308: Test & Measurement Regional Sales N
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