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4.4.3 Estimating Loading (Single Repeater and IP Site Connect) ................... 210
4.4.4 Estimating Loading (For Capacity Plus).................................................. 211
4.4.5 Loading Optimization (For Single Repeater and IP Site Connect).......... 214
4.4.5.1 Distribution of High Usage Users................................................... 214
4.4.5.2 Minimize Location Periodic Update Rate....................................... 215
4.4.5.3 Data Application Retry Attempts and Intervals .............................. 217
4.4.5.4 Optimize Data Application Outbound Message Rate .................... 217
4.4.5.5 GPS Revert and Loading............................................................... 218
4.4.5.6 Enhanced GPS Revert – Loading & Reliability.............................. 221
4.4.6 Loading Optimization (For Capacity Plus)............................................... 225
4.4.6.1 Preference for Using a Frequency................................................. 225
4.4.6.2 Improving Channel Capacity by Adjusting Hang Times................. 225
4.4.6.3 Call Priority in Capacity Plus Mode................................................ 226
4.4.6.4 Call Initiation in Capacity Plus Mode ............................................. 226
4.5 Multiple Digital Repeaters in Standalone Mode ............................................... 227
4.5.1 Overlapping Coverage Area.................................................................... 227
4.5.2 Color Codes in a Digital System ............................................................. 228
4.5.3 Additional Considerations for Color Codes ............................................. 229
4.6 Multiple Digital Repeaters in IP Site Connect Mode......................................... 230
4.6.1 System Capacity ..................................................................................... 230
4.6.2 Frequencies and Color Code Considerations ......................................... 230
4.6.3 Considerations for the Backend Network................................................ 231
4.6.3.1 Automatic Reconfiguration............................................................. 232
4.6.3.2 Characteristics of Backend Network.............................................. 233
4.6.4 Flow of Voice/Data/Control Messages.................................................... 240
4.6.5 Security Considerations .......................................................................... 241
4.6.6 General Considerations When Setting Up the Network Connection
for an IP Site Connect System......................................................................... 242
4.6.7 Considerations for Shared Use of a Channel.......................................... 243
4.6.8 Migration from Single Site Systems ........................................................ 245
4.6.9 Migration from an Older IP Site Connect System ................................... 245
4.7 Multiple Digital Repeaters in Capacity Plus...................................................... 246
4.7.1 System Capacity ..................................................................................... 246
4.7.2 Frequencies and Color Code Considerations ......................................... 246
4.7.3 Considerations for the Backend Network................................................ 247
4.7.4 Behaviors in Presence of Failures .......................................................... 247
4.7.5 Limiting Interference to Other Systems................................................... 248
4.7.6 Plan for Talkaround Mode....................................................................... 248
4.7.7 Ways to Improve Battery Life .................................................................. 249
4.7.8 Considerations for Configuring Mixed Firmware Versions...................... 249
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