Extension Connected To A Call Station - Bosch PRAESENSA Installation Manual

146 en | Call station extension | PRA-CSE
Parts check and identification
13.5.2

Extension connected to a call station

Every call station must have at least one PRA-CSE call station extension for zone selection,
with a maximum of four extensions.
A call station (A) will automatically assign a connected extension (B) to itself and number the
extensions in succession. Manual addressing is not needed and not possible. The system will
supervise that a configured extension remains connected to its call station.
The extension that is mounted immediately next to the call station is the first extension in the
configuration. All extensions communicate with their call station via a short loop‑through cable
with RJ12‑connectors. The same connection provides power to the extensions. Extensions
cannot be used without call station.
To mount and connect a call station extension, follow the procedure below:
1.
2.
3.
4.
5.
6.
Follow the same procedure for mounting an additional extension to an already mounted
extension.
2019.11 | V1.00 |
Remove the cable covers at the bottom of the call station and the extension using a TX10
screwdriver.
– For the call station, get access to the two screws via the holes in the table stand
bracket.
Mount the coupling plate between the call station and the first extension, using four M3
screws with TX10 head.
– Mounting plate and screws are included with the extension.
– An extension can only be mounted to a call station on its right hand side (looking
from above).
Connect the short RJ12‑cable between the call station and the (first) extension.
– This cable reversible and can be used in either direction. The RJ12‑cable is included
with the extension.
When the call station is not yet connected to the network, use one or two shielded
Gb‑Ethernet cables (CAT5e or better) with RJ45 connectors to connect the call station to
a PSE port, with PoE enabled.
Cut off the small break‑off part of the cable cover of the call station to make space for the
RJ12‑cable to pass through.
– This break‑off part covered the RJ12‑socket when it was not used.
Put back both cable covers, each with its two TX10 screws.
– The cable covers prevent that the RJ12‑cable can be pulled out. For the call station,
the cable cover also prevents access to the Reset switch.
Installation manual
B Call station extension
B1 Patch cable
B2 Coupling plate
B3 Screw torx TX10 (x4)
B4 Button light ring (x3)
B5 Button cap (x3)
Bosch Security Systems B.V.
PRAESENSA