Type OD 300
Cordless Switchboards, Floor Pattern
Common Battery System
THE CONNECTIONS ARE MADE BY MEANS OF KEYS.
FRAMEWORK
 Woodwork, polished walnut.
Legs enamelled iron.
The OD 300/4+16 is shown pictured to the right.
EQUIPMENT
CONNECTING Keys are arranged in horizontal rows (see table), and there are as many
keys in a row as there are lines. The n-Limber of connections which can be made at the same time is equal to the number of connecting rows respectively.
1 x SPEAKING AND RINGING KEY for each line.
1 x CALLING INDICATOR for each line.
CLEARING INDICATORS for each row of connecting keys (1 for exchange line clearing, the other for the extensions).
NIGHT BELL.
NIGHT BELL SWITCH.
EXTENSION BELL SWITCH.
GENERATOR. RH 3500, 3-magnet.
MICROTELEPHONE. RZ5059, with cord RS7021.
|
TYPE |
No. of Exch lines |
No. of Extn Ccts |
No. of rows of conn keys |
Height ins |
Width ins |
Depth ins |
Weight in lbs. |
|
OD 300/4+16 |
4 |
16 |
8 |
50.80 |
21.25 |
20.50 |
156.55 |
|
OD 300/4+24 |
4 |
24 |
12 |
55.90 |
26.96 |
20.50 |
202.86 |
These switchboards are not usually kept in stock.
Taken from the Ericsson Telephone Catalogue 1914
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