Bosch PRAESENSA PRA-CSLD - Page 44

44 en | Configure the system PRAESENSA
2020-09 | V1.20 | PRAESENSA 1.20 Configuration manual Bosch Security Systems B.V.
Item Value Description
for cable redundancy, e.g. to daisy‑chain
devices in a loop, with a maximum of 20
devices in a loop. RSTP can be disabled in
case a (corporate) network does not allow
this. See System settings, page 69
Ports 1‑5 could be each daisy‑chain
connected to network devices in the system.
Notice that port5 is possible already
dedicated used for connection of the
configuration computer.
Dual network (primary:
ports 1‑4 / secondary:
port5)
Selection Select this option for Voice Alarm systems
using ports 1‑4 for (redundant) connections
to the Voice Alarm network part, including all
other PRAESENSA devices. Use port 5 for
auxiliary connections, not related to the Voice
Alarm function, like to a background music
server.
PRAESENSA can be set up to work on two
completely separate networks simultaneously
for fail‑over redundancy, supporting glitch-
free* audio switching between both networks
for continuous and uninterrupted audio
distribution in case of a network failure of
one of the networks. In this mode, use ports
1‑4 for the primary network (with RSTP) and
port 5 for the secondary network.
Notice that port5 is possible already
dedicated used for connection of the
configuration computer.
Submit Button Click the Submit button to store the settings:
Notice that you always have to Save the
configuration. See Save configuration, page
102
– * A glitch is in this case a short‑lived audio fault in the systems network audio path, such
as very short audio disturbance, distortion, drops. By selecting this option a possible
glitch could be avoided, reduced and/or not noticed only when the network is physical
redundant connected to port5.
– * External (non) PRAESENSA network devices must support glitch free and it must be
enabled in their configuration.