Facilities - Mitel SX-200 Practices

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11
' OPS LINE CARD
Brief Description
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II .I
The OPS Line Card, part number 9109-04~XXX, contains six Off-Premises line
circuits. An Off-Premises (OPS) Line circuit is used where the line goes outside the
building housing the PABX and may be exposed to extraneous high voltages or
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induced currents (e.g., lightning).
The OPS Line Card can be used in any digital peripheral bay high power (upper) slot.
The maximum number of these cards is four per bay. This provides a maximum of 24
ports per peripheral bay.
The card is 157.5 mm high x 366.4 mm long (6.2 in, x 14.4 in.).
Major Components
I I .2 Major components for the OPS Line Card are:
9 Mite1 8962 FilterKodec (six)
9 2-wire / 4-wire converter (six)
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Ringing relay (one per circuit)
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Alarm LED.
Facilities
11.3
Each line circuit provides the following facilities:
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Line activity LED
9 Line protection
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Analog-to-Digital / Digital-to-Analog conversion (p-law)
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Signaling (ringing).
Operation
II .4 Each circuit has a LED on the front panel which lights to indicate the line is in use. A
seventh LED at the bottom of the panel lights to indicate a failure on the card.
The line circuit applies Forward Battery Feed to the line. The Tip is grounded and the
Ring is at -48 volts. When the set goes off-hook to place a call, the PABX detects the
9109-09fSl25-NA Issue1
Revision
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