Vigilant QE20 - Physical; Environmental; Power Requirements

QE20 Fibre Networking User Manual Document: LT0732
Page 4-2 24 May 2023 Issue 1.0
The ability to switch between two ATAs with relay control is not typically used in
newer systems that utilise the PIB VoIP proxy. It is needed in older systems where
an ATA line is hard configured to be either bi-directional or uni-directional (SAS
mode). This meant that one ATA line was needed typically for incoming PA audio, or
a one-to-one bi-directional WIP call, and the other (in SAS mode) used for
unidirectional outgoing audio to multiple places i.e. PA or WIP All-Call originating
here.
With the PIB VoIP proxy functionality the ATA lines are always configured to allow bi-
directional operation. This allows a line to be used for both one-to-one and one way
outgoing audio – what is required for a given call is negotiated by the software within
the VoIP devices (ATAs or PIB) at the call endpoints when the call is setup.
Figure 9 – VIF0907 Functional Block Diagram
Physical
Size Circuit board assembly 180 x 93 x 30mm.
Mounting 4 holes 3.0mm diameter in the same pattern as a
QE20 FIB Module / WIP termination card / SPIF
card. Supplied on DIN rail mounting bracket.
Environmental
Operating Temperature -5 to +45°C
Humidity Up to 95% non-condensing
Power Requirements
Voltage 15 - 28V DC
DTMF
Generator
Ring
Detector
Off-Hook
Current Sink
Micro
Processor
PA Line 1
PA Line 2
PA
Comms
Interface
Comms
DTMF
Generator
Ring
Detector
Off-Hook
Current Sink
WIP Line 1
WIP Line 2
WIP
QE20
Interface
ATA
Interface