August 2012 – Ed.1.2
EQUITEL – E451 Technical manual
Page 1
Chapter 1
Description
1.1
General description
EQUITEL E451 is an anti-vandal IP intercom based on VoIP technology. It is especially designed to be used in
IP intercom systems.
It can be powered either through the PoE standard
(1)
, thus simplifying the unit installation and maintenance,
or by using a standard auxiliary power supply.
The most important characteristics of this equipment are:
•
Double Ethernet 10/100 Base-T/TX interface, one of them compatible with the PoE technology.
•
Single channel bidirectional audio transmission, with audio quality improvements thanks to an
acoustic echo dynamic cancellation.
•
Integrated SIP agent, which allows establishing a communication with external devices by means of
P2P-SIP mode or the SIP mode with a PBX.
•
Calls supervision, internal operation test, contacts control and management by proprietary protocol
•
One user button with one status LE.
•
Electret microphone and 8 Ω loudspeaker.
•
1 opto-isolate input and 1 relay output, normally open, for external connections.
•
System configuration, audio messages and firmware remote update through a web server.
•
Robust construction with operating temperature range from -40
º
C to +74
º
C.
•
Auxiliary power supply from 9 to 14V DC.
•
Consumption lower than 5 W.
•
Flush or surface mounting enclosure.
(1 ) PoE (Power over Ethernet) is a technology that allows network devices to be electrically powered through the same cable used for the Ethernet network connection.
This technology is regulated in the IEEE 802.3af standard.
