Toshiba DK8, DK 16 manual CO Line Unit Pcou, Section March Program

external amplifier. However, the system must be programmed for one; see Paragraph 10.40. The external amplifier requires Circuits 6 and 7 on the PESU. See Peripherals Installation, Section 100- 816-207, for external amplifier installation instruc- tions.

10.20PESU Installation Procedure

10.21Install the PESU in accordance with the following steps:

1)Remove the PCB from its protective packag- ing. The protective shield on the back of the PESU is designed to protect the installer from potentially hazardous ring voltage. Do not remove this shield.

2)Ensure that the PESU subunit (ESTS) is securely attached to the PESU (refer to Figure 5-15).

3)If the electronic telephones connected to the PESU must receive OCA calls, install the EOCU subassembly PCB on the PESU per Paragraph 10.12.

4)If a BGM source is connected to the PESU, Circuit 8, cut W7.

5)Ensure that the ring voltage option, P90, is set to the “H” position for initial installation. The “L” position is used if devices connected to the PESU trip ring voltage before answer.

6)Insert the PESU into the appropriate slot, and apply firm, even pressure to ensure proper mating of connectors.

7)After installing the PESU, gently pull the PCB outward. If the connectors are properly mated, a slight resistance will be felt.

10.30PESU Wiring

10.31Refer to PESU Wiring Diagram, Section 100-816-208,for wiring/interconnecting details.

10.40PESU Programming Overview

10.41The following parameters may be specified, through programming, for the PESU:

INSTALLATION-DK 16 KSU & PCB

SECTION 100-816-205

MARCH 1993

Program 03

•Specify code 25 for all slots that have PESUs without EOCU.

•Specify code 26 for all slots that have PESUs equipped with EOCU.

NOTE:

A special code is not required to connect BGM to a PESU.

Program 31

•Configures the PESU Circuits 1 and 2 for con- nection to voice mail devices.

Program 10-2

•Sets the standard telephone ring cadence for normal or distinctive ringing and BGM source

connection.

Program 10-3

•Used for external amplifier connection.

Program 19

•Also used for BGM connection.

11CO LINE UNIT (PCOU)

11.00General

11.01The PCOU PCB adds four CO lines to the system and it can only be installed in the Expansion Unit. The PCOU provides Ring Detection, Dial Outpulsing and Hold; as well as Automatic Busy Redial (ABR) circuitry. Each CO line can be pro- grammed for Dual-Tone Multi-Frequency (DTMF) or dial pulse.

NOTE:

There are two PCOU versions (1 and 2). They are identical in fit/form/function and are inter- changeable in all DK system models.

11.02PCOU controls, indicators, and interface connectors are shown in Figure 5-17 and described in Table 5-E.

11.10PCOU Hardware Options

11.11There are no hardware options supported by the PCOU.

11.20PCOU Installation Procedure

11.21Install the PCOU in accordance with the following steps:

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