SM-D-361820

Manual telephone switchboard

SM-D-361820 Description

Steel in closure material, 12.375 inches overall diameter, switchboard, telephone, manual joint electronics type designation system item name.

Properties of SM-D-361820

Inclosure Material:
Steel
Overall Diameter:
Between 12.375 inches and 15.875 inches
Joint Electronics Type Designation System Item Name:
Switchboard, telephone, manual
Joint Electronics Type Designation System Item Type Number:
Sb22a/pt
Indicator Type:
Drop
Battery Power Type:
Local
Dial:
Not included
Position Quantity:
1
Ringing Feature:
Selective
Circuit Routing Type:
Cord type circuit routing less operators listening-talking-ringing switches
Maximum Line Accommodation:
12
Line Quantity:
12
Cord Quantity:
12
Line Type:
Local battery
Ringing Frequency In Hertz:
20.0
Ringing Voltage In Volts:
100.0
NSN:
5805-00-715-6171
Description:
Switchboard,telephone,manual
Cage Code:
80063

Definition Manual Telephone Switchboard

An item consisting of a framework or inclosure on or in which are mounted switches, relays, indicator lamps, and/or drops, wiring, fuses, line and trunk terminations. May include dial. Provides for manual connection of a calling telephone set or trunk to a called telephone set or trunk. Connections are usually made by means of plugs, jacks, and cords, or by key type switches. May include means for signalling and supervision. May be of the multiple or nonmultiple type, and may be sectionalized.

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Last modified 05/04/2024