Switching system

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OBJECT TYPE: DIGITAL/PACKET
DATE: 1976
ARTIFACT NUMBER: 2003.0052.001

MANUFACTURER: Northern Telecom
MODEL: SL-10
LOCATION: Canada

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: METAL, SYNTHETIC & GLASS COMPONENTS THROUGHOUT

Dimensions

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

Length: 127.0 cm
Width: 74.0 cm
Height: 183.0 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: Quebec
Period: THESE SWITCHING SYSTEM COMPONENTS USED C. 1976+
Canada: SL-10 NETWORK NODE DESIGNED AND BUILT BY NORTHERN TELECOM, FOR DECADES CANADA'S LARGEST MFR OF TELECOMMUNICATIONS EQ. AND BIGGEST INVESTOR IN RESEARCH AND DEVELOPMENT. (REF. 1)
Function: TO ROUTE DATA THROUGH A PACKET SWITCHED COMMUNICATION NETWORK.
Technical: PACKET SWITCHING IS ONE METHOD FOR TRANSMITTING DIGITAL DATA OVER A NETWORK. MESSAGES ARE BROKEN INTO 'PACKETS', EACH OF WHICH IS ADDRESSED AND TRANSMITTED SEPARATELY: PACKETS ARE RE-ASSEMBLED IN THEIR PROPER ORDER WHEN THEY REACH THEIR DESTINATION. THUS PACKET SWITCHED NETWORKS ARE ADAPTABLE TO CONSTANTLY CHANGING LINE CONDITIONS, AND MAKE MORE EFFICIENT USE OF TRANSMISSION RESOURCES THAN CONVENTIONAL 'CIRCUIT SWITCHED' NETWORKS. THE INTERNET IS PROBABLY THE BEST-KNOWN PACKET SWITCHED NETWORK. (REF. 1)
Area Notes: Unknown

Details

Markings: "nt/ northern/ telecom" cast in raised print on plate fixed to left front door. "643.3" stencilled in white on cabinet frame, above. "SL-10/ QCA27/ LINE AND CONTROL/ CABINET" cast in raised print on plate fixed to right front door. "643.2" stencilled in white on cabinet frame, above. Rack assemblies, individual components, etc. inside cabinet bear model & mfr. markings. Control box mounted on cabinet top marked "C.O. ALARM". All controls, etc. are labelled. "643.2" stencilled in white on back left access door, above grill. Dymo tape labels on this door read "1R/ DISK 2/ UTP13/14/5/ HSCP2/ COM. MEM." "643.3" stencilled in white on back right access door, above grill. Dymo tape labels on this door read "1L/ DISK 1/ HSCP1/ UTP10/11/12/ UTP 16/17/18."
Missing: CABINETS CONTAIN EXAMPLES OF ALL FUNCTIONAL UNITS OF SWITCHING SYSTEM: ACTUAL NETWORK NODE EQUIPMENT ARRANGED DIFFERENTLY, AND OCCUPIES OVER 30 FT. OF FLOORSPACE. (REF. 1) From CA of 12/01/2003 by Myles Bailey: Undetermined - Unknown, possibly so.
Finish: METAL CABINET FRAMES HAVE DARK BLUE ENAMEL PAINTED FINISH; GLASS ACCESS DOORS ARE TINTED DARK BROWN. EACH CABINET IS OPEN ON ONE SHORT SIDE; OFF-WHITE ENAMEL PAINTED METAL PANEL ON OTHER END.
Decoration: N/A

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Northern Telecom, Switching system, 1976, Artifact no. 2003.0052, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/2003.0052.001/

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