Bosch DCNM-APS2, Hardware Installation Manual

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DICENTIS System installation design and planning | en 17
Bosch Security Systems B.V.
Hardware Installation Manual
2021.01 | V2.2 |
4 System installation design and planning
Before you start to install system devices and connect system cabling, you should make a
system design and planning:
–
Familiarize yourself with the product and system capabilities.
– Make a cable (connection) plan:
–
Calculate the system network cable length.
– Calculate the system power consumption.
– Calculate the required power capacity of the system.
i
Notice!
The DICENTIS Conference System uses the RSTP protocol when redundant cabling mode is
enabled. If the DICENTIS Conference System needs to be connected with the locally present
network, please consult the local IT department before continuing with the installation
design.
i
Notice!
Make sure that the cable lengths and power consumptions do not exceed the specifications.
Not doing so will result in malfunctioning at any moment of the DICENTIS Conference System
and products.
4.1 System capabilities
The capability of the DICENTIS Conference System and DICENTIS products depends on:
–
The lengths of the system network cables.
– The number of connected devices.
– The system power supply capacity.
Cable length
System network cables (DCNM‑CBxx-I) lengths (2, 5, 10 or 25 m) have a direct effect on the
available power supply capacity. The longer the system network cable, the less power supply
capacity is available to drive the connected devices. Therefore, choose the lengths of the
system network cables carefully.
i
Notice!
Custom network cables must never exceed the maximum Ethernet specification of 100m
(IEEE 802.3ab).
Keep your network hierarchy as flat as possible. This means having as few levels as possible.
It is recommended not to exceed 7 levels. See the following example: 1: 1
st
level = Root
switch, 2: 2
nd
level = switch, 3: 3
rd
level = switch.
Figure 4.1: Example: Switch-levels