 L. M.
ERICSSONSWITCHBOARDS No. 621 - 626 | ||||||||||||||||||||||||||||||||||||||||||||||||
|
WALL-PATTERN SWITCHBOARD
No. 622 shown to the right.
|
||||||||||||||||||||||||||||||||||||||||||||||||
Last revised: March 26, 2024FM2 |
|
L. M.
ERICSSON SWITCHBOARDS No. 621 - 626 | ||||||||||||||||||||||||||||||||||||||||||||||||
|
WALL-PATTERN SWITCHBOARD
No. 622 shown to the right.
|
||||||||||||||||||||||||||||||||||||||||||||||||
Last revised: March 26, 2024FM2 |
Fitted with jack and indicator for each line. The connections are made by
mean of pairs of plugs and cords, with a ring-off indicator in series on each pair. A
service plug is provided for ringing the subscriber required and telling him that his
attention is sought. Lightning protectors, night bell with plug switch, hand
micro-telephone, and generator are included in the equipment. Also provided with all the
necessary terminals.