Aastra OpenCom 100 Mounting And Commissioning User Manual page 33

Installation
V.24 Doorstation
equipment
OpenCom 150: V.24 and doorstation equipment slots
The OpenCom 100 has two slots in which special interface cards can be operated
(V.24 and doorstation equipment). You can see the location of these slots in the
diagrams.
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The doorstation equipment interface card (also called "Door Phone" or "Door
Bell") provides "actor" ports and "sensor" ports.
With the OpenCom 130 and the OpenCom 131 systems, an "M100-TFE"
interface card can be used. For connecting a door station, this card type offers
two actor and three sensor ports.
With the OpenCom 150 system, an "M100-TFE-2" interface card can be used.
This card type offers four actor and four sensor ports. With this card, two door
stations can be connected with two call buttons for each door station.
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The V.24 interface card provides a serial port.
Proceed as described below to install one or both of these interface cards:
1. Turn off the OpenCom 100. Open the housing cover.
2. Remove the slot card from the transport packaging. Check that it is the correct
type of slot card. (There is a sticker with the type name on the connector.)
Installing Interface Cards
31