Fd System Configuration; Controlcabinet; Peripheral Interface Cards - Mitel SX-200 Practices

General Description
from the disk to the Main Controller Memory using Direct Memory Access (DMA).
Generic 1001 requires only one disk drive.
Bay Control Card (BCC)
- interfaces the peripheral cards of digital bays to the MCC
(one BCC for each Bay, except Bays 1 and 2 of a 144-port Control backplane).
Peripheral Control Card
(FCC) - controls all basic functions of the analog Peripheral
Cards. The Peripheral Control Card also handles real time tasks, such as rotary digit
collection, tone cadencing, signaling on trunks, and monitoring hardware activity via
the Peripheral Control Bus. All events are reported to the Main Controller via the
Message Subsystem.
Digital Interface Card (DIC)
- provides an interface between the analog signals on the
speech paths of the analog peripheral bays and the digital PCM links to the DX Module
on the MCC. The DIC converts analog signals in the300Hz-3kHz band to PCM signals
at 84 kilobits per second. The DIC accepts 32 analog voice inputs to provide a 2.048
Mbit/s (32 X 84 kb/s) PCM output bit stream to the DX module. It also converts a 2.048
Mb/s PCM bit stream from the DX Module to 32 analog voice signals, and provides the
Message Subsystem interface.
Scanner Card
- scans the Analog Peripheral ports to detect signals that require
processor action. When processor action is required, an Interrupt Request is sent to
the Peripheral Processor.
Peripheral Interface Cards
- interface peripheral devices, such as telephones,
SUPEfEETtelephones and datasets into the system. Functional descriptions for the
Peripheral Interface Cards are provided at the end of this chapter.
SXXXI FD System configuration
Control Cabinet
4.3
The main hardware components of the Control cabinet are as follows:
Main Control Card
- performs call processing and maintains overall control through
communication with the Bay Control card in each Peripheral cabinet. A RAM Module,
-
a Decryption Module, and a Stratum Clock Module plug into the Main Control Card.
Switch Matrix Module
- increases the DX switching matrix of the Main Controller
Card. The Switch Matrix Module plugs into the Main Control Card.
Control Resources Card
- provides the additional circuitry required to support the
distributed architecture.
Disk Drives
-Two 3.5-inch disk drives are mounted in the front panel at the top of the
cabinet. They are visible through openings in the front cover. The 3.5-inch floppy disks
that the installer inserts in each drive store the system software and Customer Data.
When the system is powered up, Call Processing and Maintenance software is
downloaded from the floppy disks to the Main Controller Card Memory using Direct
Memory Access (DMA).
100 4-2
Revision 0 9109-096-l OO-NA Issue 1