Toshiba DK 16, DK8 manual Dvsu Installation for Digital Telephones

INSTALLATION-STATION APPARATUS

SECTION 100-816-206

MARCH 1993

3.20Off-hook Call Announce Upgrade (DVSU)

3.21To receive Off-hook Call Announce (OCA) calls, a digital telephone must be upgraded with a DVSU; the telephone making the call does not require a DVSU. An additional wire pair is not required for digital telephones that receive OCA calls. The DVSU is compatible with both 2000- series and 1000-series Digital Telephones.

NOTE:

Digital telephones cannot be equipped with a DVSU and integrated data interface unit (PDIU-DI or PDIU-DI2) at the same time.

3.22DVSU Upgrade Installation. Install the DVSU upgrade in accordance with the following steps.

1)Loosen the four captive screws securing the telephone base (Figure 6-1) and remove the base.

2)Loosen the four captive screws securing the metal plate to the standoffs inside the base where the DVSU will be installed (Figure 6-6). Remove the plate, which can be discarded.

3)Position the DVSU PCB on the standoffs (Figure 6-6), and secure with the four pro- vided screws.

4A) If installing the DVSU into a 2000-series digital telephone, refer to Figure 6-7 (DKT2010-H) or Figure 6-8 (DKT2010-SD, DKT2020-S, DKT2020-SD), and then connect the DVSU wire plugs to the DVSU connectors on the printed circuit board (PCB) inside the telephone.

4B) If installing the DVSU into a 1000-series digi- tal telephone, refer to Figure 6-9, and connect the DVSU wire plugs to the DVSU connectors on the PCBs inside the telephone.

5)Reinstall the telephone base and secure it with its four captive screws.

RED

WIRE

RED WIRE

FIGURE 6-6

DVSU INSTALLATION FOR DIGITAL

TELEPHONES

3.30Loud Ringing Bell/Headset Upgrade (HHEU)

3.31The loud ringing bell/headset upgrade (HHEU) enables an external speaker (HESB) for the Loud Ringing Bell feature and/or a headset to be con- nected to both series of digital telephones.

NOTES:

1.There are two types of HHEU: the HHEU1 (which has four versions, V.1 ~ V.4) and the HHEU2.

2.Both 2000- and 1000-series Digital Tele- phones require either an HHEU2 or a V.3 or V.4 HHEU1 for HESB operation; ear- lier HHEU1 versions are only sufficient for headset operation only.

3.Only digital telephones equipped with an HHEU2 can be wall mounted. The HHEU2 is identical to the V.4 HHEU1, except that the HHEU2 has longer wires to accom- modate wall mounting.

4.A Toshiba HESC-65A cable is required to connect the HHEU in a digital telephone to the HESB.

5.1000-series digital telephones cannot be equipped with the HHEU (any type or

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