Toshiba DK8, DK 16 manual Background Music BGM Options

4B) Solder PIOUS jumper W2 to MAKE or BREAK position if required:

•MAKE (M)—Shorts the normally open contacts (NHT and NHR) when any CO line is in the hold condition.

•BREAK (B)—Opens the normally closed contacts (NHT and NHR) when any CO line is in the hold condition.

5)For DK8 and DK16, MOH is sent to any station or CO line that is on hold.

6)MOH is also applied through the Page/Back- ground Music (BGM) control to provide BGM to electronic/digital telephone speakers and external page (refer to Paragraph 2.20).

2.20Background Music (BGM) Options

2.21The Background Music options allow music to play over optional external speakers (external page system) and/or electronic and/or telephone speakers. The system allows BGM to be config- ured any of the three ways described below:

1)Configuration A (DK8 and DK16)—one music source: This configuration allows BGM and MOH to share the same music source (see Figure 7-3). With this configuration, the MOH/ BGM music source is connected to the MOH RCA jack on the DK8 KSU or DK16 Base Unit. The music source is sent to CO lines/stations on hold, to electronic/digital telephone speak- ers with BGM turned on (via Intercom 481 or Tel Set Music button), and to the exter- nal page system via the 600 ohm RCA jack on the DK8 KSU or DK16 Base Unit.

2)Configuration B—two music sources: This configuration allows the MOH source to be connected to the MOH jack on the DK8 KSU or DK16 Base Unit (as in Configuration A) and a separate BGM source to be connected to a designated circuit on either a QSTU (circuit 2, Port 19), PEKU (circuit 3), PESU (circuit 8), PSTU, or KSTU (circuit 4)—see Figure 7-4. With this configuration, the MOH source is sent only to CO lines/stations on hold, while the BGM source is sent directly to electronic/ digital telephone speakers and to the external page system via the 600 ohm RCA jack on the DK8 KSU or DK16 Base Unit.

INSTALLATION-PERIPHERALS

SECTION 100-816-207

MARCH 1993

3)Configuration C (DK16 only)—three music sources: This configuration allows the MOH source to be connected to the MOH jack on the Base Unit (as in Configuration A). The digital or electronic telephone BGM source is connected to a designated circuit on the PEKU, PESU, PSTU, or KSTU (as in Configuration B), and a separate BGM source is sent to the external page speakers via the PIOU Zone relay contacts (see Figure 7-5). When a sepa- rate BGM source is connected to the PIOU, two customer-supplied amplifiers are required to drive the external speakers. One amplifier

(1) drives the speakers for BGM when page is idle and the other amplifier (2) drives the speakers during page.

2.22MOH Source as Background Music Instal- lation (DK8 and DK16). Install the MOH/Back- ground Music option in accordance with the follow- ing steps (refer to Figure 7-1):

1)Ensure that the Music-on-Hold option is in- stalled in accordance with Paragraph 2.12.

2)The output of the MOH RCA jack is applied to the 600 ohm PAGE RCA jack output.

3)When using an HESB or external amplifier for paging/BGM, adjust volume using the HESB or amplifier volume control.

2.23Alternate BGM Source Installation A BGM source can be connected to either a QSTU, PSTU, KSTU, PEKU, or PESU. This music will be sent to all electronic/digital telephone speakers and to the external page system via the 600 ohm PAGE RCA jack on the DK8 KSU or DK16 Base Unit. This BGM source is separated from the MOH source connected to the MOH RCA jack on the DK8 KSU or DK16 Base Unit. Connect the BGM source to the QSTU, PSTU, KSTU, PEKU or PESU in accordance with the following steps (Figure 7-4):

NOTE:

If connecting the BGM source to the KSTU, PSTU, or QSTU PCB, a telephone adaptor matching/isolation transformer should be in- stalled between the source and the PCB to protect the source from potentially ruinous voltages generated by the PCB (see Figure 7-2).

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