PAGE 2
DOC: 369B
REV: 01-12
IEDA520 / LC108 DIGITAL COMMUNICATION STATION
INSTALLATION INSTRUCTIONS
from the pass-through connection and into the paging system whenever the user makes an announcement go
active by pressing the PTT switch.
The wall mount version of the 520 digital communication station can be equipped with either a telephone style
handset, or with the IED 501HH teardrop handheld microphone. Either a handset hanger or a metal magnet
landing area for the 501HH is inserted at the top of the station. The IED-supplied telephone-style handset has a
push-to-talk switch in the handset cradle area.
With either the telephone headset or the handset, the 520 digital communication station is capable of two-way
audio communication. The station provides digital-to-analog conversion of any incoming routed signal, which is
then supplied to the earpiece. With the right system/controller configuration, the 520 series station can be used
for intercom communications.
520 Model Numbers
IEDA520D / LC108MS-D
Desktop without microphone
IEDA520D-G / LC108MSD-G
Desktop with gooseneck microphone
IEDA520W
Wall-mount without microphone
IEDA520W-T / LC108MSW-HS
Wall-mount with telephone handset microphone
IEDA520W-H / LC108MSW-HH
Wall-mount with hand-held microphone
IEDA520DTB
Optional desktop mounting base for W models
Network Requirements
The IED 520 Series Digital Communication Stations utilize CobraNet
®
technology licensed from Cirrus Logic
®
.
Live audio on the data network is time sensitive and requires minimal latency through the network to ensure unin-
terrupted audio. The IED 520 Digital Microphone Station and CobraNet operate on Layer 2 (MAC Layer) of the OSI
Model. This traffic will not operate on a Layer 3 Router or above. VLAN’s (Virtual Local Area Networks) may be re-
quired for managing traffic as well as Quality of Service (QoS) and Prioritization configuration of network switches.
All connections to the 520 Digital Microphone Stations must be full duplex 100 Mbps Ethernet auto-negotiation.
IEDA520W-T
LC108MSW-HS
IEDA520DTB
Desktop Base
IEDA520W-H
LC108MSW-HH
IEDA520D-G
LC108MSD-G
