ERICSSON SWITCHBOARD No. OF 300


768.jpg (11731 bytes)Type OF 300
Multiple Switchboards
(One Position Section)
Common Battery System
Double Supervision
Lamp Signalling


OF 300/100 shown

FRAMEWORK
Polished walnut, each section has a multiple capacity of 30 strips of jacks each for 20 jacks.

EQUIPMENT
1 ANSWERING JACK for each line mounted in strips of 10.
1 PAIR OF CORDS and 3-point plugs (see table for number of cord circuits on each board).
1 SPEAKING AND RINGING KEY for each cord circuit.
1 DOUBLE SPEAKING KEY.
1 DOUBLE RINGING KEY for Hand Generator.
1 CALLING LAMP-JACK AND LAMP for each line mounted in strips of 10.
2 SUPERVISORY LAMP-JACK AND LAMP for each cord circuit mounted singly.
1 PILOT LAMP-JACK AND LAMP for calling.
1 RINGING VIBRATOR for supervising the outgoing ringing current.
1 RINGING KEY for Power Generator.
NIGHT BELL.
NIGHT BELL SWITCH.
GENERATOR. RH 5080, 5-magnet.
MICROTELEPHONE. RE 5110 (differentially wound), with cord RS 9501.

NOTE
The line relays are mounted on a special rack.
This type of board is not usually kept\in stock.

TYPE

No. of Metallic Ccts

No. of cord ccts

Height ins

Width ins

Depth ins

Weight in lbs.

OF 300/5

50

10

60.80

23.62

29.62

154.50

OF 300/100

100

15

60.80

23.62

29.62

231.50


Type OF 300/200
200 LINE SWITCHBOARD
Consisting of:-
2 1-position sections OF 300/100 (including line relays and rack) which have the additional equipment of 10 strips of multiple branching jacks, each for 20 lines, arranged in 4 panel multiples and cabled with 80 wire 0.6 m/m wool insulated mat cables for 3 sections.

Type OF 300/300
300 LINE SWITCHBOARD
Consisting of:-
3 1-position sections OF 300/100 (including line relays and racks), which have the additional equipment of 25 strips of multiple branching jacks, each for 20 lines, arranged in 4 panel multiples, and cabled with 80 wire 0.6 m/m wool insulated mat cables for 4 sections.

Type OF 300/400
400 LINE SWITCHBOARD
Consisting of:-
4 1-position sections OF 300/100 (including line relays and racks), which have the additional equipment of 40 strips of multiple branching jacks, each for 20 lines arranged in 4 panel multiples and cabled with 80 wire 0.6 m/m wool insulated mat cables for 5 sections.

500 LINE SWITCHBOARD
Type OF 300/500
Consisting of:-
5 1-position sections OF 300/100 (including line relays and rack), which have the additional equipment of 65 strips of multiple branching jacks each for 20 lines arranged in 4 panel multiples and cabled with 80 wire 0.6 m/m wool insulated mat cables for 6 sections.

Type OF 300/600
600 LINE SWITCHBOARD
Consisting of:-
6 1-position sections OF 300/100 (including line relays and rack), which have the additional equipment of 90 strips of multiple branching jacks each for 20 lines arranged in 4 panel multiples and cabled with 80 wire 0.6 m/m wool insulated mat cables for 7 sections.


Taken from the Ericsson Telephone Catalogue 1914

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Last revised: April 29, 2000