2: : Hot Line

, the "Hot Line" feature allows a specific port to immediately connect to a destination number upon activation.

: Navigate to the "Hot Line" settings in the device web interface and check the Enable Hot Line function. 2 : Hot Line

: Often used in Koontech VoIP phones to achieve instant "point-to-point" communication between two specific handsets. 3. Electrical Context: "Two Hot Lines" , the "Hot Line" feature allows a specific