Bosch Appliances 3.5 manual 20.2Controls, connectors and indicators, 20.3Connections, Introduction

2011-02 Installation and User Instructions 5 Call Stations

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20.2Controls, connectors and indicators

The remote call station (see figure 20.3 and figure 20.4) contains the following:

1Headset connection - A 3.5 mm (0.14 inch) jack socket to connect a headset. The loudspeaker (5) and the microphone are muted when a headset is connected (see section 20.3.3).

2Volume control - A control to adjust the volume of the internal loudspeaker and the headset.

3Press-to-talk (PTT) key - A key to start a call.

4 Status LEDs - Three status LEDs provide information about the remote call station and the status of the Praesideo system (see section 20.5).

5 Loudspeaker - A loudspeaker for audio monitoring purposes. The loudspeaker and microphone are muted when a headset is connected to the headset connection (1). Only chimes and messages activated by a PTT key of the call station or one of its keypads (see section 47.3.3) are played via the loudspeaker of the call station.

6 External power supply/Control inputs - A connection for an (optional) external power supply and control inputs (see section 20.3.4 and section 20.3.5).

7 RJ45 connector - A connector to connect the remote call station to a PRS-CSI Call Station Interface via a straight Cat-5 cable (see section 20.3.2).

Caution

Do not connect the connector 7 to any Telecom or Ethernet network. This connection is dedicated for PRS-CSI only.

8Service connector - A connector used for manufacturing. Not for normal use.

9Interface connector - A flat cable connector to connect the remote call station to a call station keypad.

20.3Connections

20.3.1 Introduction

This section gives an overview of typical system connections using the remote call station.

•Connecting the network (see section 20.3.2).

•Connecting a headset (see section 20.3.3).

•Connecting an external power supply (see section 20.3.4).

•Connecting control inputs (see section 20.3.5).

20.3.2 Connecting the network

Connect the remote call station to the Praesideo system using a PRS-CSI Call Station Interface (see chapter 22).

20.3.3 Connecting a headset

The next figure shows the signals that are available on the headset connector and how they relate to the parts of a 3.5 mm connector.

5V

2K2

microphone

headphone

GND

figure 20.2: Headset connector

Note

The wire of the headset may not be longer than 3 meter.

Bosch Security Systems 2011-02