Bay Control Card; General; Functions; Indicators - Mitel SX-200 Practices

3
.
BAY CONTROL CARD
General
3.1.
The Bay Control Card (BCC) is required in the lower rightmost slot of all digital bays,
except Bays I and 2 of a COMBO backplane. On 672-pat-t systems, a Bay Control
Card is required in every Peripheral Bay. In SX-200 FD systems, a BCC is required
in each Peripheral Cabinet. The circuit card measures 158 mm x 368 mm (6.2 in, x
14.5
in.),
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This card must not be inserted or removed with the power on.
Functions
3.2
The Bay Control card provides:
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Control of operations within the Bay
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Monitoring of lines, trunks and other circuits within the bay; reports are sent to the
Main Control Card via HDLC message links
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Ringing signal conversion. (The wave form comes from the Main Control Card as a
PCM signal).
. Connectors for the Peripheral FIM Carrier which is required for the SX-200 FD,
Indicators
3.3
The Bay Control Card has Alarm LED TX (transmit) and Rx (receive) indicators for the
HDLC message link.
Electrical Description
SX-200 DIGITAL Operation
3.4
Electrical connection between the Bay Control and the circuit cards is through the
peripheral backplane. Connection to the Main Control Card is via PCM cables. The
PCM cable connector is on the rear of the backplane, behind the Bay Control
location. There is room for two more cables for future applications.
672-Part SX-2U0 FD Operation
Electrical connection between the Bay Control Card and the Peripheral line and trunk
cards in a Peripheral Cabinet is through the Peripheral Backplane. Connection to the
Main Control Card (in the Control Cabinet) is via a bidirectional fiber optic link. The
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