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pressing the off-hook button will send a start-call signal over the USB HID
interface to the connected device.
The “Voicemail number” field allows to configure which number is called from
when the voicemail menu is selected in the dialer.
Maximum call duration allows limiting calls to a specific length, and causes
calls to end after the specified time. Setting the maximum duration of “0” or
leaving it blank disables the maximum duration and allows for calls of any
length.
The “Dial Plan” field allows specifying a dial plan for the phone. The syntax for
the dial plan is described in detail in the Advanced Operations section of this
manual.
Forwarding Settings allow specifying automatic forwarding behavior of the
phone. Selecting any of these will require a phone number to be entered to
which calls will be forwarded. When selecting “Forward on no answer” a
timeout has to be defined after which the call will be forwarded.
