Conettix C900V2 | Installation Guide | 3.0 Setup
8 Bosch Security Systems, Inc. | 8/08 | F01U087780-01

2.7 Ethernet Connection

One of the RJ-45 jacks connects the C900V2 to
the Ethernet Network (LAN or WAN).
The connector pins are listed in Table 3.
Table 3: Ethernet Connector Pins
Pin Connection
1 TX+
2 TX–
3 RX+
6 RX–
3.0 Setup

3.1 Setting P3

A shorting link on P3 selects the voltage and
current applied to the alarm panel’s telephone
circuit to simulate the signal from a PSTN
telephone exchange. For most alarm panels, set
the shorting link to the H position (short the middle
and right pins of P3). The L position results in
slightly lower power consumption for the C900V2
but some alarm panels might report a telephone
line failure when dialing the C900V2.
For UL approved applications, the
shorting link must be set to the H
position.

3.2 Setting the DIP Switches

A ten-position DIP switch programs the C900V2.
The programming depends on the application and
dialer format of the control panel connected to the
module.
Figure 8: C900V2 DIP Switches
1 2 3 4 5 6 7 8 9 10
1 2
O
N
1 – Off
2 – On
Because the C900V2 emulates a phone
line and a digital receiver, you must
program the C900V2 to the format it
receives from the control panel.
DIP Switch positions 1 through 4 and 10 program
the dialer format into the C900V2. Table 4 on page
9 lists the format programming for these DIP
switches.