. Bell Telefon Zeitschrift . Unterstände, Bohrer und erste-Hilfe-Schulungen sind Elemente des Schutzes für Mitarbeiter in Telefongebäuden strategisch gelegene Verkehrskontrollbüros werden ständig über den Zustand aller wichtigen Einrichtungen informiert. Sie sind in der Lage, zu ergreifen, bevor es zu ernsthaften Verzögerungen kommt. Seit dem Zweiten Weltkrieg wurden Koaxialkabel mit einer Kapazität von vielen HundertKanälen und Funkrelais-Systeme mit einer potenziellen Kapazität von so viel asor größer als das Koaxialkabel, in großem Maßstab installiert.umfangreiche Nutzung dieser Einrichtungen hat nicht nur die Verkehrsabwicklung Ca-pac erhöht
1903 x 1312 px | 32,2 x 22,2 cm | 12,7 x 8,7 inches | 150dpi
Weitere Informationen:
Dieses Bild kann kleinere Mängel aufweisen, da es sich um ein historisches Bild oder ein Reportagebild handel
. Bell telephone magazine . Shelters, drills, and first aid training are elements ofprotection for employees in telephone buildings strategically located traffic control bu-reaus are constantly informed regard-ing the condition of all major cir-cuits. They are able to take actionbefore serious delays occur. Since World War II, coaxial cableshaving a capacity of many hundredsof channels, and radio relay systemswith a potential capacity as great asor greater than the coaxial cable, have been installed on a large scale.Extensive use of these facilities hasnot only increased traffic-handling ca-pacities but has provided diversifica-tion of routes and types of equipment.For example, seven separate trans-continental routes, employing all 150 Bell Telephone Magazine AUTUMN BEFORE DISPERSION TOWEST Cll TOLL CIRCUIT ROUTE fLOCAl PLANT FOR(.REACHING TOLL CIRCUITS. Dispersion of telephone transmission facilities is an important factor in the ability tomaintain continuity of service after enemy attack modern types of facilities, provide alarge measure of safety against seri-ous interruptions to essential traffic.Another example is a radio-relaychannel now being constructed fromBoston to Philadelphia and Washing-ton. It will follow a new route, com-pletely by-passing New York City, and will thus make available a sub-stantial number of direct circuitsfrom Washington to the many im-portant military and civilian installa-tions in the New England states, nomatter what might happen in NewYork City. Thoughtful attention is beinggiven to means of avoiding even a temporary loss of all toll services ina large city, even in the event of com-plete destruction of the main toll cen-ters. The general principle followedis to terminate a portion of the tollcircuits in outlying buildings ratherthan in the main toll centers andto provide means of access to thelocal
