NEC AMERICA, INC.
BUSINESS SYSTEMS DIVISION
ET1 NUMBER: MK-010
DATE: MAY, 1988
INSTALLATION AND OPERATION OF THE CONFER3 SIX
DIGITAL VOICE CONFERENCING BRIDGE UNIT
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DESCRIPTION
This Engineering Technical Information (ET11 Bulletin describes the steps necessary to connect
CONFER3 6-party digital voice conferencing unit, to an Electra Mark11 system. The CONFER9 unit is
conference bridge that provides conference capability for up to six parties from an internal extension or five
parties from a remote location. After establishing a conference, the CONFER@ unit provides automatic
voice level control to all members of the conference. Figure 1 shows a typical installation.
LIMITATIONS
2.1 -Maximum of five outside (CO) lines can confer on a remotely established conference.
2.2 Maximum of six parties (five external and one internal) can confer on an internally established
conference.
2.3 Only 2-wire loop start DTMF lines can be used.
PARTS REQUIRED
3.1 Sixty six block (or space for connecting 5 CO lines on existing block).
3.2 CONFEIi’J Unit which includes:
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Telephone cable (multi pair) with 36-pin connector on one end
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Cable support bracket and screws
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Cable tie
3.3 Small flat tipped screwdriver
3.4 Digital voltmeter.
REFERENCES
CONFER0 Installation hlanual and Users Manual
SITE REQUIREMENTS
5.1 A vertical surface, preferably the Electra Mark11 MDF, near an available 120 VAC circuit.
5.2 Ambient room temperature range:
40”F- 120°F (5”C-50°C).
5.3 Relative humidity: 25% - 85% (non-condensing).
