Grandstream Networks DP755 User Manual page 46

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3. Keep holding PTT key while speaking.
The channel status will change to Sending PTT to indicate that you are transmitting as displayed on the following screenshot.
To terminate PTT call, press
Note
User should expect a delay of 6-8 seconds to establish PTT call due to DECT signaling, and which will not exist once PTT call is
established.
Configuration:
PTT feature is always enabled on the base station, to use this feature, users need to enable the PTT on handset at: Handset
Menu -> Preferences -> PTT -> set "Enabled".
Also, to use PTT, the DP722 needs a dedicated button to push and then to talk, user can choose to use either LSK (Left
Softkey) or RSK (Right Softkey) in Shortcuts settings. (If you forgot to enable the PTT, when you press the PTT softkey, it will
redirect you to the setting to enable it before you can use it.)
Users can configure "DECT PTT Silence Timer" on the Web UI at -> DECT -> General Settings. When a PTT call established, any
handset who enabled PTT feature will automatically join the PTT call. if there is no one talking, after certain time, the PTT call
will be closed. This timeout setting is to determine how long the PTT call will be closed after being idle status. If set to 0, the
timer will be disabled, and the PTT will be remaining forever until all party exit the PTT call.
PTT Transmission
button.
Enable PTT
Set a Softkey for PTT

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