Vigilant QE20 - Description of QE20 Fibre Networking

QE20 Fibre Networking User Manual Document: LT0732
Page 1-6 24 May 2023 Issue 1.0
Description of QE20 Fibre Networking
A fibre networked VIGILANT QE20 system uses an IP (Internet Protocol) network to
send data and voice (Speech, WIP, paging console, background music) between
QE20 panels.
The VIGILANT Panel-Link IP Bridge (PIB) is used to provide data networking
between panels as well as one-to-many VoIP audio streaming. A third-party
Analogue Telephone Adaptor (ATA) (Cisco ATA 192) is used to convert voice
signals into VoIP and provide one-to-one VoIP calls between nodes as well as act as
an audio source for the PIB VoIP proxy functionality. The PIB’s Ethernet connection
is wired via the ATA (it has two Ethernet ports working in bridged mode), so a
communications fault is generated if the ATA fails, is powered down, or loses its
configuration.
The VIGILANT VIF0907 module (VIF) is used to interface the QE20’s Speech and
WIP audio signals into the ATA, as well as set up and monitor the call functions of
the ATA.
A third-party Ethernet Switch and fibre optic converter (Moxa EDS-405A) sends the
IP traffic over the fibre ring. It monitors the ring for a break, and when one is detected
it automatically sends the packets in both directions, so all other nodes receive the
information. The ring break signal is output by a fault relay in the switch, wired to the
PIB so that the QE20 can generate a fault condition.
Each QE20 panel must include an RS485 Network Module to control networking
operation and provide the data and audio interface points for the Fibre Network Kit.
This general arrangement is shown in Figure 1. The highlighted items are included in
the QE20 Fibre Networking Kit.
Figure 1 –General Arrangement of QE20 Fibre Networking Kit
The fibre network can be used to extend QE20 networking over long distances or
between locations where it is not economic or practical to install the multiple cable
pairs needed for a QE20 RS485 copper network (plus extra pairs for background
music and/or paging console audio when required).
The fibre network can also be used to distribute paging console audio and/or
background music. Additional VIF modules, ATAs, and PIBs may be required.
RS485
Network
Module
VIF0907
ATA
Fibre Switch
PIB
TTL Comms
Fibre to
other
nodes
Ethernet
UTP
Ethernet
UTP
Speech + WIP
QE
Comms
+5V
+24V
+24V
2 x RJ11 cables
Network Interface
Components
General QE20
Components