Multiplexer

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Ingenium, 2004.0156.001
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OBJECT TYPE: DIGITAL
DATE: 1977
ARTIFACT NUMBER: 2004.0156.001

MANUFACTURER: Northern Telecom
MODEL: DE-3
LOCATION: Canada

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: Metal & synthetic components.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 68.0 cm
Width: 31.0 cm
Height: 38.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Telephony
Sub-Category: N/A

Manufacturer

AKA: NORTHERN TELECOM
Country: Canada
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Ontario
Period: Unknown
Canada: A Canadian-based company, Northern Telecom/Nortel Networks was one of the most important manufacturers of telecommunications equipment in the world in the 1990s.
Function: To process 24 voice channels from analog to digital format for transmission. The channel bank must also convert the digital signals back to analog at the receiving office.
Technical: Provides interface between analog switching eq. and digital carrier to convert voice frequency or analogue signals into a digital bit stream. DE-3 was designed to economically meet the needs of both large and small telephone companies. Small and compact, it's modular design allowed additons, replacement or modification of components with a minimum of interruption or down-time.
Area Notes: Unknown

Details

Markings: All controls, components, etc. labelled; most also bear bar coded decals. Dominant markings on unit front include "DC-3 CHANNEL BANK/ nt/ northern/ telecom", "NOT OPERABLE- FOR PACK STORAGE ONLY", and "J72041AA-01". "N/E/ Northern Electric/ COMPANY LIMITED/ MADE IN CANADA" and "PO546752" cast in raised print on frame top. "ED 7204-31/ SERIES A" printed on decal applied to lower right rear corner.
Missing: Unknown. According to curator, this unit is not operable.
Finish: Pale grey enamel painted metal frame; dull silver metal top; black synthetic fronts on line channels; most line caneels fitted with black synthetic switrches. Red, yellow, green, white and orange controls. 4 square metal plates (2 on each side) used for securing unit.
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

Northern Telecom, Multiplexer, circa 1977, Artifact no. 2004.0156, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/2004.0156.001/

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