User's Manual Part 1

Cabling possibilities (DCNM-APS2/DCNM-
PS2)
Limitations/requirements
Create a redundant loop by connecting the
DICENTIS devices in a daisy chain
configuration from a high power socket on a
DCNM-PS2 / DCNM-APS2 to a high power
socket on another DCNM-PS2.
The redundant loop between two DCNM-PS2
units is for power and signal. If one of the
DCNM-PS2 units fails, the other DCNM-PS2
unit will supply power and signal to the
DICENTIS devices in the daisy chain.
The redundancy is for cable only. If the
DCNM-PS or DCNM-APS fails, all DICENTIS
devices connected to that unit will also fail.
To enable redundancy:
– Rapid Spanning Tree Protocol (RSTP)
must be enabled in the DICENTIS
Conference System.
– a network switch with redundant power
supply, should be connected to the
DCNM-PS2 / DCNM-APS2 units, as
shown in the previous figure.
You can use any of the high power sockets (3,
4, or 5) on either of the DCNM-PS2 units to
create the daisy chain/redundant loop.
For example, high power socket 3 on one unit
can be connected to high power socket 4 on
another unit.
Note: The redundant loop must be connected
to another DCNM-PS2 type unit. You cannot
use DCNM-PS / DCNM-APS type units to
create redundant loops for power.
You can create a redundant loop for signal
only, by connecting the DICENTIS devices in a
daisy chain configuration to the same DCNM-
PS2 or DCNM-APS2, although this is not
recommended.
The DCNM-PS2 unit is designed to reduce
cost of ownership, for example, by allowing a
maximum of three redundant loops to be
connected between two DCNM-PS2 units.
The redundant loop will function in the same
way as a DCNM-PS / DCNM-APS type unit.
Refer to Redundant cabling for DCNM‑APS/
DCNM‑PS units, page 22.
Notice!
Rapid Spanning Tree Protocol (RSTP) must be enabled in the DICENTIS Conference System
for these redundancy options to work correctly.
See also
– Power supply capacity calculation plan, page 17
24 en | System installation design and planning DICENTIS
2016.07 | V1.4 | Hardware Installation Manual Bosch Security Systems B.V.