Battery-ringing wall telephone, with hand micro-telephone No. 522 with cord
No. 2142.For use in connection with inter-communication switches No's. 780, 781, 782, and 783, the magneto-ringing telephone instruments No's. 307, 308, 357, and 382 are suitable.
The following battery-ringing instruments can also be used:-
No. 411
No. 416
BATTERY-RINGING WALL TELEPHONE No. 407
Battery-ringing wall telephone, with hand micro-telephone No. 522 with cord
No. 2142.
Weight. 3.1 lbs.
Price £2 1 0s.
Taken from the Ericsson Telephone Catalogue 1903
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