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L. M. ERICSSON
SWITCHBOARD OB 2000
Type OB 2000
Floor Pattern Switchboard
Earth Circuit
Local Battery System

THE CONNECTIONS ARE MADE BY MEANS OF PLUGS AND CORDS.

FRAMEWORK
768.jpg (11731 bytes)Wood, polished walnut, with the jack field covered with fibre and the iron legs enamelled.

EQUIPMENT
1 x JACK for each line.
1 x PAIR OF CORDS AND PLUGS (see table for number of cord circuits for each board).
1 x OPERATOR'S KEY for each cord circuit
1 x RINGING KEY.
1 x RINGING BACK KEY.
1 x CALLING INDICATOR for each line.
1 x CLEARING INDICATOR for each cord circuit.
NIGHT BELL.
NIGHT BELL SWITCH.
GENERATOR. RH 4011, 4-magnet.
MICROTELEPHONE. RE 5052, with cord RS 7021.
LIGHTNING PROTECTOR. 

The OB 2000/50 shown pictured to the right.


 

TYPE OLD TYPE No. No. of Earth ccts No. of cord ccts Height ins Width ins Depth ins Weight in lbs.
OB 2000/50 645 50 10 58.66 27.16 25.04 104.78
OB 2000/100 646 100 12 63.40 38.19 25.20 194.04


Taken from the Ericsson Telephone Catalogue 1914

 
 
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Last revised: March 28, 2024

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