Yealink SIP-T23, Provisioning Manual

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Appendix
225
Parameter
Permitted
Values
Descriptions Web Setting Path
0-Disabled
1-Enabled
The default value is 1.
features.allow_mute 0 or 1
It enables or disables the IP phone to mute an
active call.
0-Disabled
1-Enabled
The default value is 1.
Features->General
Information->Allow Mute
features.group_listen_in_talking_enable 0 or 1
It enables or disables the IP phone to enter
into the group listening mode by pressing the
speakerphone key when it is in talking using
the handset.
0-Disabled
1-Enabled
The default value is 1.
features.ringer_device.is_use_headset 0, 1 or 2
It configures the ringer device for the IP
phone.
0-Use Speaker
1-Use Headset
2-Use Headset & Speaker
Features->Audio->Ringer Device for
Headset