Station Apparatus
Electronic Telephone Upgrades
5-20
Strata DK40 I&M Manual Spring 1999
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
Loud Ringing Bell/T001B Headset Upgrade (HHEU)
The Loud Ringing Bell/Headset upgrade (HHEU) enables an external speaker (HESB) and/or
a T001B unit and/or a headset to be connected to the electronic telephone. The HESB and the
T001B allows a loud ringing/flashing device to be activated with the ringing of an electronic
key telephone.
Notes
◆ There are two types of HHEU: the HHEU1 (which has four versions, V.1~V.4) and the
HHEU2.
◆ Only electronic 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
accommodate wall mounting.
◆ A Toshiba HESC-65 or HESC-65A cable is required to connect the HHEU in an
electronic telephone to the HESB. Refer to Chapter 6 – Peripheral Installation for HESB
installation procedures.
◆ All HHEU versions and types, except for V.1 HHEU1, are compatible with the Speaker
Off-hook Call Announce upgrades (HVSU2 and HVSU/HVSI).
HHEU Upgrade Installation
HHEU
Component Side of HHEU
SW601
P601
R607 (HHEU1 V.1 ~ V.3)
OCA (HHEU1
(HHEU1A V.1 ~V.3)
V.4 or HHEU2)
To P1, HHEU
Connector of
Telephone
PCB
1492
Figure 5-13 HHEU Installation for Electronic Telephones
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