85
3)
Back
soft key: Return to the previous screen
4.
Mute
soft key: So that the other two parties cannot hear your voice, and the other
two parties can still talk .
5.
Hang up soft key:
End the meeting.
5.13 Upgrade
The T790 phone can be upgraded to the latest version via the Web, the latest version
can be downloaded from the official website or contact your seller to obtain.
- Upgrade firmware version via web
1. Through the web interface, click
Settings -> Upgrade -> Upgrade Firmware
,
select the version that needs to be upgraded, and click Upgrade.
2. It is forbidden to disconnect the power supply and network during the upgrade
process, otherwise irreversible problems may occur, and the system cannot be
turned on.
5.14 Upload ringtone
T790 phones can upload custom ringtones via the Web.
-
Upload custom ringtones via the web
1. Through the web interface, click
Settings -> Preference -> UpLoad Ringtones
.