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

7. BAY CONTROL CARD

General

Functions

indicators

Electrical
7.01 The Bay Control Card is required in the lower rightmost slot of
all digital bays, except Bays 1 and 2. On 672-port systems, a
Bay Control card is required in every bay. This card must NOT be
inserted or removed with the power on. The card measures 158 mm x
368 mm (6.2 in. x 14.5 in.).
7.02 The Bay Control card provides:
Control of operations within the Bay
l
Monitoring of lines, trunks and other circuits within the bay;
reports are sent to the Main Control Card via HDLC message
links
l
Ringing signal conversion. (The waveform comes from the Main
Control Card as a PCM signal).
7.03 The Bay Control Card has Alarm LED T
(receive) indicators for HDLC message link.
Description
7.04 Electrical connection
cards is through
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.
7.05 There are two pairs of switches on the card. See Figure 7-1. All
four switches must be closed for normal operation.
Circuit
between the Bay
the peripheral backplane.
Card Descriptions
(transmit) and Rx
X
Control and the circuit
Connection to the
Page 15