SB1400

Manual telephone switchboard

SB1400 Description

Aluminum inclosure material, 47.500 inches overall diameter, manual telephone switchboard joint electronics type designation system item name.

Properties of SB1400

Inclosure Material:
Aluminum
Overall Diameter:
47.500 inches
Joint Electronics Type Designation System Item Name:
Manual telephone switchboard
Joint Electronics Type Designation System Item Type Number:
Sb-202a/gta-4
Indicator Type:
Light
Battery Voltage Rating In Volts:
24.0
Battery Power Type:
Common
Dial:
Included
Position Quantity:
1
Ringing Feature:
Selective or nonselective
Circuit Routing Type:
Cord
Maximum Line Accommodation:
70
Line Quantity:
10
Cord Quantity:
10
Line Type:
Interposition trunk
Ringing Frequency In Hertz:
20.0
Ringing Voltage In Volts:
90.0
NSN:
5805-00-505-1779
Description:
Switchboard,telephone,manual
Cage Code:
21340

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