ERICSSON SWITCHBOARD No. OA 500


768.jpg (11731 bytes)Type OA 500
Cordless Switches, Wall Pattern
(Pyramid Type)
Metallic Circuit
Local Battery System

OA 500/5 shown

To be used in conjunction with any ordinary telephone instrument.
THE CONNECTIONS ARE MADE BY MEANS OF KEYS.

FRAMEWORK
Polished walnut.

EQUIPMENT
1 KEY for each line for connecting the lines to the telephone instrument.
CONNECTING KEYS The number varies with the capacity of the board.
1 CALLING AND CLEARING INDICATOR per line.
NIGHT BELL.
NIGHT BELL SWITCH.
CARBON LIGHTNING ARRESTER.

TYPE

OLD TYPE No.

No. of Circuits

Height ins

Width ins

Depth ins

Weight in lbs.

OA 500/3

635

3

14.97

7.09

4.33

8.82

OA 500/4

636

4

14.97

7.09

4.33

9.48

OA 500/5

637

5

14.32

9.04

4.33

14.32

OA 500/6

751

6

17.32

9.05

4.33

15.43


Taken from the Ericsson Telephone Catalogue 1914

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Last revised: October 03, 2001