Yealink T4 Series User Manual page 11

Using a Headset .............................................................................................................................................. 211
Using Bluetooth Feature .............................................................................................................................. 214
Connecting to the Wireless Network ...................................................................................................... 222
Using an Expansion Module ....................................................................................................................... 228
Maintaining Your Phone ........................................................... 231
Diagnosing the Network .................................................................................................................................. 231
Checking the Network Using "Ping" Method ...................................................................................... 231
Checking the Network Using "Trace Route" Method ....................................................................... 232
Rebooting Your Phone ..................................................................................................................................... 232
Resetting to Factory Settings ......................................................................................................................... 233
Updating the Phone Configuration ............................................................................................................. 234
Export All Diagnostic Files ............................................................................................................................... 235
Appendix..................................................................................... 237
Appendix A - Time Zones ................................................................................................................................ 237
Appendix B - Menu Structure ........................................................................................................................ 239
For the SIP-T48S/T48G IP phone .............................................................................................................. 239
For the SIP-T46S/T46G IP phone .............................................................................................................. 240
For the SIP-T42S/T42G/T41S/T41P/T40G/T40P .................................................................................. 241
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