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........................................................................................... 107
................................................................................................ 109
Restoring customized keys to default
.............................................................................. 110
Enabling or disabling Prompt direct number
..................................................................... 110
............................................................................................... 111
Turning call history on and off
......................................................................................... 112
......................................................................... 112
Exchange credentials for basic authentication
..................................... 112
Exchange credentials for OAuth authentication
................................... 113
Enabling and disabling Microsoft
........................................ 114
Turning automatic gain control on or off
........................................................................... 117
Turning button clicks on and off
....................................................................................... 118
Turning error tones on and off
......................................................................................... 119
Enabling wireless headset bidirectional signaling
............................................................. 119
Configuring hearing aid compatibility
............................................................................... 119
................................................................................................ 120
............................................................................................... 121
Setting a personalized ringtone
...................................................................................... 122
Sidetone of your handset or headset
............................................................................... 122
............................................................................................. 123
Setting the screen saver details
...................................................................................... 123
.............................................................................................. 124
Adjusting the brightness of a phone screen
..................................................................... 124
.......................................................................................... 124
......................................................................................... 125
......................................................................................... 127
Checking your phone periodic automatic update
.................................................................... 129
Contents
December 2021
Using Avaya J139 SIP IP Phone in Open SIP
10