Toshiba DK8 Part II. Printed Circuit Board Installation General, PCB Installation Considerations

PART II. PRINTED CIRCUIT BOARD

INSTALLATION

5GENERAL

5.01This chapter provides procedures for installa- tion of STRATA DK8 system optional printed circuit boards (PCBs) into the Key Service Unit. This includes installation instructions, optional configu- ration information, and wiring and programming considerations for each PCB.

5.02Be sure the ground has been checked. (See Chapter 2 for grounding.)

6PCB INSTALLATION CONSIDERATIONS

6.01The STRATA DK8 KSU comes standard with four digital telephone circuits (ports) and two CO line circuits. These circuits, along with the common control unit, are built into the motherboard.

6.10KSU Option PCBs

6.11The KSU can support up to five optional printed circuit boards (PCBs) (Figure 4-7): it can support a maximum of two QCDUs, each of which provides one CO line circuit and two digital tele- phone circuits; a QSTU which provides two stan- dard telephone circuits (ports); a QRCU which provides three circuits to receive DTMF tones (required for DISA and devices connected to QSTUs), and three circuits to detect busy tone (required for the ABR feature); and a QSMU which provides a port for either a Station Message Detail Recording (SMDR) device or a maintenance termi- nal or modem (System Program 10-3, LED 04) selects the function of the port — SMDR or TTY).

6.12The KSU does not come from the factory with any option PCBs installed. Each of the option PCBs listed above must be installed in specific locations as described later in this chapter.

NOTE:

QCNU is a standard factory installed piggy- back PCB which provides conference circuits allowing two simultaneous conferences with four of these parties on the first conference

INSTALLATION-DK8 KSU & PCB

SECTION 100-816-204

MARCH 1993

call and three parties on the second simulta- neous conference.

6.20PCB Option Considerations

6.21PCBs may be configured for a variety of hardware and software options. Hardware options are defined as either internal (generally related to optional PCB subassemblies) or external (related to connection of peripheral equipment such as background music, voice mail, etc). Hardware and software options for each PCB are identified in the individual PCB installation procedures in this chap- ter.

6.22PCB Hardware Options. Each PCB must be configured for the applicable hardware options prior to installation of the PCB. Configuration in- structions for internal hardware options are pro- vided in the individual PCB installation procedures in this chapter. Configuration instructions for exter- nal hardware options are provided in Peripheral Installation, Section 100-816-207.

6.23PCB Software Options. PCBs are config- ured for software options through programming, after installation of the PCBs in the KSU. A pro- gramming overview for each PCB is provided in the individual PCB installation procedures in this chap- ter. Refer to the Programming Procedures, Section 100-816-300, for detailed programming instruc- tions.

6.30PCB Installation/Power Supply Consid- erations

6.31Whenever removing or installing PCBs it is recommended that the power supply be OFF.

7CO LINE/DIGITAL TELEPHONE INTERFACE UNIT (QCDU)

7.00General

7.01The QCDU provides one loop start CO line circuit and two digital telephone circuits. The QCDU digital telephone circuits can support digital tele- phones, PDIU-DIs/PDIU-DI2s or ADMs connected to the telephones and PDIU-DSs. The QCDU does not support a DDSS console or DDCB. A maximum of two QCDU PCBs may be installed in the KSU.

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