Toshiba DK 16, DK8 manual BUILT-IN CO Line and Digital Telephone Circuits, K4RCU PCB

INSTALLATION-DK 16 KSU & PCB

SECTION 100-816-205

MARCH 1993

14.30K4RCU Wiring

14.31The K4RCU does not require any wiring.

14.40K4RCU Programming Overview

14.41The following parameters may be specified:

Program 03

• Enter code 92 for Slot 00 if K4RCU is installed.

Program 12

• Set K4RCU release time.

Program 15

• Sets K4RCU operation after CO line flash.

15BUILT-IN CO LINE AND DIGITAL TELEPHONE CIRCUITS

15.00General

15.01As mentioned in Paragraph 2, the Base Unit comes standard with four CO lines and eight digital telephone circuits already installed.

15.10Built-in CO Line Circuits

15.11The four standard loop start CO line circuits are on a printed circuit board (PCB) called the KCOU, which is installed on the motherboard at the factory (Figure 5-23). The KCOU circuits are iden-

tical to the PCOU and KCDU CO line circuits. The KCOU also has four PAD (3 dB) switches—SW400, SW425, SW450, and SW475—to reduce exces- sive loudness caused by a nearby CO or PBX telephone system. For wiring and programming considerations, see the PCOU instructions in Para- graph 8. The Base Unit circuits are fixed and are assigned to Base Unit virtual equipment slots as follows: 8-digital station circuit to slot 01, 4-CO line circuits (KCOU) to slot 02, and 4 standard tele- phone circuits (KSTU) to slot 3.

15.20Digital Telephone Circuits

15.21The eight digital telephone circuits that come standard with the system are integrated into the motherboard in the Base Unit. These circuits are indentical to the digital circuits found on the PDKU and KCDU. The motherboard does not have to be configured for the digital circuits to operate. For wiring and programming considerations, see the PDKU instructions in Paragraph 7.

15.30Base Unit CO Line/Digital Station Circuit Wiring

15.31Refer to Section 100-816-208for details.

P2A (BASE UNIT)	P2B (BASE UNIT)
P602A	P602B
VERSION
CONNECTORS
FIGURE 5-22
K4RCU PCB

5-34