Telecommunications connection unit for telephones and additional devices, flush-mounted versions with metal frame, 6-way assignment, AP: For surface mounting, UP: For flush mounting with frame and central plate for 'stand-alone installation', UP50: For flush mounting with central plate for integration into all common switch programs using a TAE intermediate frame, UP0: For flush mounting without central plate for direct integration into all common switch programs, 05300513 to 05300518: Number of sockets 1, 05300519 to 05300534: Number of sockets 3
