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DIP is the control protocol used between STENTOFON IP stations and AlphaCom E exchanges. It is used for all data-communication with the IP stations, such as call control, LED settings and display text to the station, and key presses and inputs from the station.

DIP is short for "Display-data over IP", and refers to the ASLT display data protocol. This protocol was based on 9600 baud one-way transmission while DIP is transmitted both ways over IP (TCP and UDP).

See also ACDP message: DIP FWD