Digital Interface Card; Facilities; Connections - Mitel SX-200 Practices

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DIGITAL INTERFACE CARD
Brief Description
6.1
The Digital Interface card is installed in slot 18 of an analog peripheral shelf, It
interfaces the analog shelf to the Main Control Card. The card is illustrated in
Figure 6-l.
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Facilities
6.2
Facilities for the Digital Interface card include:
0 analog/digital and digital/analog conversions between the analog junctors and the
Master Control card via the PCM cable
* enables dial pulse detection by the Peripheral Control card. Dial pulses cannot be
encoded in PCM
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provides a message channel between the Main Control card and the Peripheral
Control card via the PCM cable.
Connections
6.3 The Digital Interface card is installed in slot 18 of an analog peripheral shelf. It must
not be inserted or removed from the system with the power on. The card front panel
contains three 21-pin male DIN connectors and two LEDs. A PCM cable from the
Main Control is plugged into J2.
A 2-shelf peripheral cabinet may have a Digital Interface card installed in both the top
and bottom shelves. In this case, the cable from the Main Control card plugs into J2 of
the lower DIG. An intershelf jumper cable connects Jl of the lower DIG to J3 of the upper
shelf DIG The upper shelf card performs only the analog/digital interface and dial pulse
detection functions. When connected this way, the cards automatically identify their
location to the main processor.
9109-096-125-NA
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125 6-l