. La rivista Bell Telephone . One and Telegraph Company e la International Tele-phone and Telegraph Corporation.questi voiceways sotto il Gulfstream hanno reso possibile il primo collegamento di- rect tra i tele-telefoni del Bell System e le società di itsconnectionaggio e quelli della compagnia telefonica cubana di Cuba. A quel tempo, questi erano il più lungo e profondamente sommerso cablesin uso per la comunicazione telefonica. I cavi (ciascuno di 100 a 105 miglia nauti-cal) erano di manu-facture inglese, nella maggior parte dei casi simile incostruzione a telegrafo cavi othe periodo. Kach conteneva una co singolare

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. Bell telephone magazine . one and TelegraphCompany and the International Tele-phone and Telegraph Corporation.These voiceways under the GulfStream made possible the first di- rect connection between the tele-phones of the Bell System and itsconnecting companies and those ofthe Cuban Telephone Company inCuba. At the time, these were the longestand most deeply submerged cablesin use for telephonic communication.The cables (each of 100 to 105 nauti-cal miles) were of English manu-facture, in most respects similar inconstruction to telegraph cables otthe period. Kach contained a singlecentral conductor insulated with guttapercha ami another outer copper con-ductor which, together with theground and sea, formed the returncircuit path. An unusual feature ofthe cables was a wrapping ot ironwire over the central conductor.This was to provide loading to in-crease their efficiency—that is, theinductance of the circuit was in-creased by the use of iron. By present-day standards, these 104 Bell Telephone Magazine SUMMER.

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1920