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Administrator’s Guide for SIP-T4X IP Phones
xiv
Configuring Audio Features ............................................... 197
Headset Prior ............................................................................................................................... 197
Dual Headset ............................................................................................................................... 198
Audio Codecs .............................................................................................................................. 199
Acoustic Clarity Technology ........................................................................................................ 203
Acoustic Echo Cancellation ................................................................................................. 203
Voice Activity Detection ....................................................................................................... 204
Comfort Noise Generation .................................................................................................. 205
Jitter Buffer ............................................................................................................................ 206
Configuring Security Features ............................................ 209
Transport Layer Security .............................................................................................................. 209
Secure Real-Time Transport Protocol .......................................................................................... 215
Encrypting Configuration Files ................................................................................................... 217
Upgrading Firmware ......................................................... 221
Resource Files.................................................................... 225
Replace Rule Template ............................................................................................................... 225
Dial-now Template....................................................................................................................... 226
Softkey Layout Template ............................................................................................................. 227
Directory Template ...................................................................................................................... 229
Super Search Template............................................................................................................... 230
Local Contact File ........................................................................................................................ 231
Remote XML Phone Book ............................................................................................................ 233
Specifying the Access URL of Resource Files ............................................................................ 234
Troubleshooting ................................................................. 237
Troubleshooting Methods ........................................................................................................... 237
Viewing Log Files .................................................................................................................. 237
Capturing Packets ................................................................................................................ 240
Enabling the Watch Dog Feature ........................................................................................ 240
Getting Information from Status Indicators........................................................................ 241
Analyzing Configuration Files.............................................................................................. 241
Troubleshooting Solutions ........................................................................................................... 242
Why is the LCD screen blank? ............................................................................................. 242
Why doesn’t the IP phone get an IP address? ................................................................... 242
How do I find the basic information of the IP phone? ....................................................... 243
Why doesn’t the IP phone upgrade firmware successfully? ............................................. 243
Why doesn’t the IP phone display time and date correctly? ........................................... 243
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Страница 263: ...Troubleshooting 247 Factory reset can restore the original password All custom settings will be overwritten after reset ...
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