GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM
Single Line Telephone interface circuits, six(6) card slots for optional boards, one(1) Wireless terminal interface circuit and data communication circuit which transmits and receives to/from other cards. The MBU is equipped with one basic card; a PMU for program memory, data memory, and etc. Refer to Figure 3.4.2.
Figure 3.4.2 MBU Installation
The MBU provides screw-down terminal blocks that is used to connect the peripheral instruments; Keyset, SLT, Base station, and etc. Four(4) DKTUs are connected to MBU through terminal block, CN18, and two(2) SLTs are connected to the SLT1 & SLT2 ports of terminal block, CN19. The connection between MBU and base station is performed through the WTI1 port of terminal block, CN19. All of peripheral instruments are installed by using twisted one pair copper line.
