The bandwidth that Flexnet occupies in the standard Ethernet network is of 25Mb/s. On
Ethernet networks of 100Mb/s, it works at network layer 2 for audio and layer 3 for
communications.
Operation of the connection between NEO devices:
The return connection to the port B will be generally on standby. It will activate
automatically if a loss of connection between devices is detected. If connection can not be
recovered, it will turns again on standby and a 'LINK' failure will be shown until a manual
reboot. In case that the system works correctly using the redundant link, the system will show
the following failure: 'Network backup link active'.
4.4 VOICE EVACUATION ZONES
The voice evacuation zones de fine those physical areas that contain a group of voice
alarm speakers with same evacuation message. One evacuation zone may have one or more
ampli fication channels. In order to set up the voice evacuation zones, use the con figuration
application.
4.5 BACK-UP AMPLIFICATION
The equipment has the option of working with an internal back-up ampli fier. This option
is selectable from the con figuration application. When it is activated, the last channel of the
equipment will be used as a back-up of the other integrated ampli fiers and, therefore, it can nor
be used to cover one of the voice alarm zones. When a malfunction is detected in one of the
ampli fication channels, there will be an automatic switch to the back-up ampli fication channel
that will occur in less than 10 seconds. If the detected problem is fixed, it will switch again
automatically to the main ampli fier. If a second ampli fier fails during the malfunction of a main
ampli fier, the back-up ampli fier will not automatically switch as long it is busy with the previous
malfunction.
The back-up channel is constantly monitored as well as the rest of the integrated
ampli fiers. It is not possible to assign one voice evacuation zone to the back-up channel
because the zone of the replaced ampli fier will be automatically assigned.
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Picture 44: Back-up ampli fier connection
User's Manual: EN 54-16 PA/VA System LDA NEO
Picture 43: FlexNet