Reliant Octel 200 and Octel 300 Message Servers PB6001401 Bedienungsanleitung PDF herunterladen (Seite 94)

100

101

2-22

Installation and Maintenance

olume

Octel Overture 200/300 Serenade 3.0

PB60014–01

Central Processing Unit (CPU)

The

central processing unit (CPU) is the master control unit for the Octel Overture 200/300. The

CPU controls the VCU and the optional integration cards. The CPU contains four serial I/O ports.

The first serial port is shared between the internal modem and the system terminal port, which is

accessed at the rear connector J1 or the front connector SP1. As a modem port, the first serial port

can be connected to any telephone port under system software control. The internal modem is a Bell

103A-compatible (300 baud)/Bell 212A and CCITT V

.22-compatible (1200 baud)/CCITT V

.22

bis-compatible (2400 baud) modem and RS-232C serial connection.

The second port can either communicate with the optional DID/E&M T

runk Interface via an

RS-232C cable or be used for RS-232C adaptive integration for message waiting and passing call

information from some PBXs. Refer to the

Integration

volume, Adaptive Integration chapter

On the Octel Overture 200, the CPU is located in slot A9. The CPU provides relay closure contacts

for major and minor alarms on J3.

On the Octel Overture 300, the third and fourth ports, accessed through J3 and J4, are reserved for

future use. The CPU provides relay closure contacts for major and minor alarms on J5.

The CPU also contains the following:



On the Octel Overture 200, a floppy disk controller controls the floppy disk residing in the PSU.



On the Octel Overture 300, a floppy disk controller controls the floppy disk residing in slot B5.



The message-server time-of-day clock is backed up by battery. The battery can keep the clock

running for up to 1 week if the power fails.



The message-server TDM crosspoint switch controls the TDM bus.



An Analog

-to-digital converter (A to D) monitors message-server voltages and temperature.

Power Supply Unit (PSU)

The

power supply unit (PSU) is a plug-in unit with three nominal input voltages available for the PSU:

90–132 V

ac (1

10 V

ac nominal)

180–260 V

ac (230 V

ac nominal)

42–60 Vdc (–48 Vdc nominal)

A PSU with the correct input voltage must be used. Do not install or remove the PSU with the circuit

breaker in the ON position.

On the Octel Overture 200, the PSU is located in slot A10. The message server input voltage is

displayed near the power cord socket at the rear of the cabinet and on the PSU.

On the Octel Overture 300, the PSU is located in slot A15. The message server input voltage is

displayed on the power line filter at the rear of the cabinet.

For the Octel Overture 300, refer to the Installation chapter

, Installation Requirements section, for

instructions to install an

Octel Overture 300 powered by a –48-Vdc PSU. Refer to the Hardware

Replacement, Power Supply Unit section, in this manual for instructions about removing and

installing a PSU.

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