Bcu Processor Pcbs; Pcb Installation Power Supply Considerations; Maximum Capacities - Toshiba strata CT Installation & Maintenance Manual

BCU Processor PCBs

System Type:
Current Version:
Older Version(s):

PCB Installation Power Supply Considerations

H

Maximum Capacities

C
Strata CT I&M Manual October 2000
Strata CT Base Cabinet
B1CU, B2CAU/B2CBU, B3CAU/B3CBU, B5CAU
None
The common control unit provides centralised control for the system. It incorporates a 16 or
32 bit, 68000-type microprocessor and contains a custom time switch and conference Large
Scale Integration (LSI) circuitry.
The processor operating software is programmed on four read-only-memory (ROM) chips on
the B1CU, B2CAU, B3CAU, B5CAU PCBs. The B5CBU also has a flash memory PCB
(BMMS). The operating software (ROM or BMMS) is factory-installed.
The BCU common control units interface with optional BRCS DTMF receivers, feature keys
(RKYS 2, 3 or 4) for Auto Attendant (AA), Automatic Call Distribution (ACD), Management
Information System (MIS) for ACD, Toshiba proprietary RS-232 and SMDI voice mail
interfaces.
1. The power supply must be Off whenever removing or installing the processor PCB—
B1CU, B2CAU/B2CBU, B3CAU/B3CBU, and B5CAU PCBs (see
2. It is recommended that the power supply be Off, whenever possible, when removing or
installing the other PCBs.
Configurations for a fully-expanded system can range from 200 lines/ 336 stations.
Additionally, each of the common control units can support a separate set of features. Refer
to Chapter 1 – Strata CT Configuration
Each of the common control units may be equipped with an BRCS (4, 8, or 12) to interpret
Dual-Tone Multi-Frequency (DTMF) signals transmitted from Tie/DDI lines, built-in AA and
standard telephone ports. The common control units also provide an interface (along with a
volume control) for a Music-on-hold (MOH)/Background Music (BGM) source.
BCU PCBs are described later in this chapter.
for more information.
Strata CT Installation
Figure 2-2).
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