The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 298
Ca//ine Cord Fig. 277 seen in Fig. 277 (which shows the cord connections of a specialparty-line switch-board), or by the generator reversing key, 272 PRACTICAL TELEPHONE HANDBOOK shown in Fig. 243, which shows an ordinary C.B. board cord-connections, arranged also for party-line working. It will be…
Telephone
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