Pesu - Standard/Electronic Telephone Interface Unit; Dk40I General Information; Installing The Speaker Off-Hook Call Announce Unit (Eocu) (Internal Option) - Toshiba STRATA DK14 Installation And Maintenance Manual

PESU – Standard/Electronic Telephone Interface Unit
System:
DK40i Expansion KSU, DK424, DK424i
Circuits per PCB:
two standard telephone or two-wire device circuits (circuits 1,2)/
four electronic telephone circuits (circuits 5~8)
Interfaces with:
standard telephone circuits
standard telephones
voice mail ports
off-premises stations
alternate BGM source
auto attendant digital announcer
electronic telephone circuits
electronic telephones
alternate BGM source (circuit 8 only)
EOCU PCB for OCA
HDCB (circuit 5 only–ports 004, 012, 020, and 028)
external conference amplifier
Older Version(s):
none
The PESU provides a ring generator that can be set for either 130V P-P or 190V P-P for the two
standard interface circuits. PESU circuits 3 and 4 are nonfunctional, but they are each assigned a
port in system programming.
For the system to recognize the DTMF tones generated by a standard telephone (or any
Note
other device connected to a standard telephone port), a DTMF receiver unit (RRCS4, 8, or
12) must be installed on the DK40i K4RCU3, DK424 or DK424i processor PCB.
PESU controls and interface connectors are shown in

DK40i General Information

The PESU must be installed in the DK40i Expansion KSU in place of RDSU, RSTU or PDKU.
See Chapter 2 – DK40i
To prevent system malfunction, DO NOT install the PESU in slot 18 of the
CAUTION!
DK40i system.

Installing the Speaker Off-hook Call Announce Unit (EOCU) (Internal Option)

1. Mate the EOCU connectors J10, J20, J40, J50, and J60
P10, P20, P40, P50, and P60.
Note PESU connectors P10, P20, P40, P50, and P60 are positioned to allow installation of the
EOCU only in the proper position.
2. Apply firm, even pressure to the EOCU to ensure proper mating of connectors.
3. Use three-pair cable for connecting the PESU and the Speaker OCA electronic telephone.
Refer to Chapters 10
4. See "PDIU-DI Installation into 1000-series Digital Telephone" on Page 11-14
to add required speaker OCA upgrade to electronic telephones.
Strata DK I&M 6/00
Configuration.
for wiring/ interconnecting details.
Figure 9-8 and described in
(Figure 9-8) with the PESU connectors
Universal Slot PCBs
PCB Chapter Layout
Table 9-5.
for procedures
9-17