NEC nd-20292 manual Nformation

NEC AMERICA, INC.

BUSINESS SYSTEMS DIVISION

NFORMATION

ET1 NUMBER: MK-010

DATE: MAY, 1988

INSTALLATION AND OPERATION OF THE CONFER3 SIX PARTY

DIGITAL VOICE CONFERENCING BRIDGE UNIT

1.DESCRIPTION

This Engineering Technical Information (ET11 Bulletin describes the steps necessary to connect a

CONFER3 6-party digital voice conferencing unit, to an Electra Mark11 system. The CONFER9 unit is a

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.

2.LIMITATIONS

2.1-Maximum of five outside (CO) lines can confer on a remotely established conference.

2.2Maximum of six parties (five external and one internal) can confer on an internally established conference.

2.3Only 2-wire loop start DTMF lines can be used.

3.PARTS REQUIRED

4.

_

3.

3.1Sixty six block (or space for connecting 5 CO lines on existing block).

3.2CONFEIi’J Unit which includes:

• Telephone cable (multi pair) with 36-pin connector on one end • Cable support bracket and screws

• Cable tie

3.3Small flat tipped screwdriver

3.4Digital voltmeter.

REFERENCES

CONFER0 Installation hlanual and Users Manual

SITE REQUIREMENTS

5.1A vertical surface, preferably the Electra Mark11 MDF, near an available 120 VAC circuit.

5.2Ambient room temperature range: 40”F- 120°F (5”C-50°C).

5.3 Relative humidity: 25% - 85% (non-condensing).