The Telephone in America

The telephone was born in America and has reached its highest development in this country. Since 1876, when Alexander Graham Bell first talked successfully over his primitive telephone, a network of voice highways has grown up throughout the nation, linking more than fifty-four million telephones. About four-fifths of these are owned by the Bell System, which is a group of closely associated telephone companies, a research and development organization and a manufacturing and supply company, all headed by the American Telephone and Telegraph Company. The other telephones are owned and operated by some 5,000 independent telephone companies and about 20,000 rural or farmer lines outside the Bell System but connecting with it.

Bell telephone service is home town service. Linked with thousands of other home town services, it makes a neighborhood of the nation. The company that furnishes your service is part of your community. Its operators, installers and other representatives are your neighbors. Some may be your friends or relatives. Its departments are managed by your fellow citizens—men and women who have come up through the ranks.

Nine out of every ten telephone calls handled by these home town people are local calls. The tenth call may go across the continent or across the ocean. But wherever the calls go, they travel by means of a marvelously ordered world of wires, cables, switchboards, dial equipment, radio and above all, with the help of people working together to serve the public.

This booklet gives you a personal glimpse of that world. It tells the story of the Bell System, but it should be remembered that much that is said here applies also to the other telephone companies that share with the Bell System the privilege and the responsibility of providing telephone service for the people of America.

Behind Your Telephone

When you pick up your telephone, you have at your fingertips a communication system that is mainly local in its operations. Probably you will use it most of the time to talk to people in or near your own community, but wherever you wish, it can carry your voice across the continent or even across the seas to other countries. The telephone industry in the United States now includes:

■ Telephones serving homes and businesses in 75,000 cities and towns, and more than 3,000,000 telephones in rural areas.

■ A network of wire linking these telephones. About 95 per cent of this wire is in sturdy cables, and almost three-fifths of the cable is underground.

■ More than 25,000 central offices in which telephones are connected by means of switching equipment. Over 9,500 of these offices are operated by Bell System companies.

■ Literally billions of small parts—relays, condensers, resistors, vacuum tubes each carefully designed and finely fashioned so that it will work in harmony with all other parts, anywhere in the country.

■ Radio-telephone links to automobiles, trains, ships, airplanes, and countries overseas.

■ A growing system of radio relay routes used for transmitting both long distance telephone conversations and television programs.

■ Highly skilled telephone people living and working in nearly every American community. The Bell System alone employs about 700,000 men and women, who are busy planning, designing, manufacturing, improving, building, operating—all working to fulfill the traditional telephone policy of providing the best possible service at the lowest possible cost.

In the telephone office

Every time you make a telephone call—either by dialing or by giving the operator the number—you first reach the telephone central office. This nerve center of your local telephone system contains equipment through which your telephone can be connected to any other telephone you wish to reach.

In a small community there may be only one central office. In large cities there are many of them, all joined by trunk lines. The term telephone exchange means the whole local area served by one or more central offices.

Over four-fifths of all Bell System telephones are dial-operated. Intricate machinery in the central office makes connections by obeying the electrical signals that you send over your line as you turn the dial on your telephone.

Before you dial, the equipment in the central office tells you it is ready to serve you by transmitting a “hum-m-m-m” over your line. You should hear this dial tone before you start to dial. The dial tone serves the same purpose as the operator’s “Number, please!”

Telephones that are not dial-operated are connected with manual central offices, where operators seated at switchboards make the connections by hand. Switchboards differ greatly in size. In small villages one or two operators handle all calls. In large cities the volume of calls requires hundreds of operators working at large multiple switchboards. The term multiple comes from the fact that the end of each subscriber’s telephone line is duplicated or multipled at intervals throughout the switchboard. For example, a switchboard serving 6,000 customers might have positions for 20 operators. The board would be multipled so that each operator answering a call from any of the group of customers assigned to her, could reach his line and connect it with any one of the 5,999 others.

Written as well as spoken messages are handled through switchboards. Teletypewriter Exchange Service (TWX) does for the written word what the telephone does for the spoken word. This service transmits typewritten messages over any distance through connections made by operators at switchboards. It is especially valuable for business firms; there are now some 37,000 listings in the TWX directory.

The courteous, helpful service rendered by telephone operators has become a traditional part of American life. Even in communities that have dial service, “the voice with a smile” is on the job to handle long distance calls, to provide telephone numbers not included in the directory, and to give any other help that customers may desire.

Ever since World War II, the Bell companies have kept on installing new equipment in great quantities to meet the largest demand ever experienced for new telephone service.

Where the wires go

The arrangement of wires that connects your telephone with the central office and with the telephones of other subscribers is something like a tree. Just as twigs lead to branches, branches to limbs, and limbs to the trunk, so individual telephone wires come together in small distribution cables. In turn, these cables come together in feeder cables that increase in size as they approach the central office. Often as many as 2,121 pairs of fine copper wires enter the telephone office in main feeder cables about as big around as a baseball bat.

Most wire in city telephone cables lies underground in tile conduits and comes into the telephone office through a cable vault in the basement. If the city has more than one central office, trunk cables interconnect the offices.

At each telephone office the cables run to the terminal room, where their hundreds or thousands of pairs of wires fan out to terminal blocks on one side of a large distributing frame. Other wires run from the opposite side of the distributing frame to the switchboard or dial equipment. Cross-connections on the distributing frame bring each telephone user’s line to its proper terminal in the switching equipment.

A telephone office is dependent on electric power, both direct and alternating. The direct current comes from storage batteries. These are kept charged by generators driven by the regular current supplied by the power company, which also provides the electricity needed for other purposes. Standby generators, usually driven by gasoline or diesel engines, are provided for emergencies in most large offices and in many smaller ones.

Ringing machines generate alternating current to operate your telephone bell and provide the various signals you hear in your telephone receiver. These machines are installed in pairs so that there will be no interruption of telephone service should one machine fail to operate properly.

Preventive maintenance, both inside and outside telephone offices, is vital in furnishing dependable, satisfactory telephone service. Telephone men periodically check the condition of telephone plant. Using steadily improving techniques, they often discover faults or weaknesses and have them corrected before the customer is aware of them.

Test desks, where testmen also track down troubles in the telephone plant, are essential to giving good service. These are special switchboards with equipment that enables the testman to diagnose the cause and location of trouble on a customer’s line.

Teamwork to serve you well

In addition to good equipment kept in good condition all the time, good telephone service depends on capable people who are well trained and skilled in their jobs.

Not only must these many people perform many different jobs to give you good service but they must work together as a team. In the Plant department, linemen, installers, cable splicers, repairmen and others build and maintain the plant so that the operators in the Traffic department can put your calls through as swiftly as possible. Similarly, the members of the other departments of the company do their work in such a way that they help others do theirs.

In every Bell telephone company there are staff people who are specialists in various phases of the business. They assist the front-line forces in meeting day-to-day problems. They find better, more efficient ways of doing things.

The purpose of all is to serve you well and with unfailing courtesy. Telephone people have a genuine desire to make the company a friendly and helpful institution. Because telephone men and women are good citizens of your community, they take pride in conducting the affairs of the company so that the public will think of it, too, as a good citizen.

A large proportion of the people in the Bell System make a career of telephone work. More than 245,000 of them have been in the business over ten years. Wages are good, employment steady, and working conditions are pleasant. The Bell companies’ Benefit and Pension Plans, among the oldest and best in industry, assist employees and their families in meeting the problems that arise from sickness, accident, old age and death. Opportunity to advance in the organization is open to all on the basis of individual ability. Supervisory and management positions are filled from the ranks.

THE PACIFIC TEL. & TEL. CO.

BELL TEL. CO. OF NEVADA

THE MOUNTAIN STATES TEL. & TEL CO.

THE SOUTHERN NEW ENGLAND TEL. CO.

NEW JERSEY BELL TEL. CO.

THE DIAMOND STATE TEL. CO.

THE CINCINNATI AND SUBURBAN BELL TEL. CO.

THE CHES. & POT. TEL. CO. (D.C.)

THE CHES. & POT. TEL. CO. OF BALTIMORE CITY

THE CHES. & POT. TEL. CO. OF VIRGINIA

THE CHES. & POT. TEL. CO. OF WEST VIRGINIA

Organized to Serve You

As a telephone user, you want to be able to count on your telephone, to be able to call other telephone users any time, anywhere. You expect reliable service at low cost. The kind of service you expect depends on teamwork—among telephone people in your local company, and among the separate companies that make up the Bell System. That is the way the Bell System is organized to serve you. This is what it contains:

■ A group of operating telephone companies, each known as an Associated Company and each serving its particular territory.

■ One of the finest research and development organizations in the world, Bell Telephone Laboratories. Its work consists of research, development and design in the communications field. It creates apparatus that improves telephone service, makes it more efficient, and keeps its cost low.

■ A supply organization, the Western Electric Company. It manufactures or purchases equipment and supplies for the operating companies on a more economical basis than the individual companies could do for themselves. It distributes equipment and supplies to the various companies. It installs equipment in telephone central offices.

■ A headquarters organization, the American Telephone and Telegraph Company. AT&T functions as a general staff for the Bell System, co-ordinating the enterprise and assisting the operating companies. It owns most of the stock of most of the operating companies. It owns nearly all the stock of the Western Electric Company, and it shares with Western Electric the ownership of the Bell Laboratories. In conjunction with the Associated Companies, the AT&T Long Lines Department furnishes long distance telephone service and other communication services over its lines and radio relay channels.

The organization of the Bell System has grown up in a natural way over a period of many years. The American Bell Telephone Company, predecessor of AT&T, owned the original Bell patents. It licensed local companies to rent Bell telephones to their subscribers. Ownership of the operating companies by the headquarters organization came about because of their need to finance expanding service, and as a means of providing the best service at lowest cost. AT&T bought Western Electric in 1882 because it was the best manufacturer of telephone apparatus and because a dependable source of supplies was essential. The Bell Laboratories stemmed from the shop where Alexander Graham Bell made the first telephone. The work of the Laboratories is a continuation, on a much larger scale, of early efforts to discover improvements in the art of telephony.

Long Lines—When you call across the land

Within its own territory your local telephone company provides inter-city service. But when you make a call that crosses the territories of various Bell companies, you are served also by the facilities of the Long Lines Department. This organization is responsible as well for overseas telephone service to points in countries abroad.

More than 337,000,000 conversations a year are handled over Long Lines facilities. To handle this volume of conversations and its various other services, Long Lines requires:

■ About 27,000 highly trained telephone employees, including operators, engineers, maintenance men, construction forces, Commercial and Accounting people in 40 states and the District of Columbia.

■ Telephone central office forces in 233 cities and towns.

■ Telephone equipment and plant, including almost 2,400 buildings, in all but one state.

■ About 27,000,000 miles of talking circuits.

Nine years after the telephone was invented, when the farthest one could talk was from New York to Boston, AT&T announced in its charter its plan to connect every place in the country “by cable and other appropriate means with the rest of the world.” Long distance lines reached Chicago in 1892. Gradually, telephone scientists solved the technical difficulties of transmitting speech over still greater distances. By 1915, Bell engineers had developed vacuum tube amplifiers to step-up fading voice currents, and the human voice spanned the miles between New York and San Francisco.

When you call across the sea

In that same year, telephone engineers also made history by establishing experimental radio-telephone connections across the Atlantic between Arlington, Va., near Washington. D. C., to the Eiffel Tower in Paris, as well as to the Hawaiian Islands and Panama.

Although World War I delayed the development of overseas service, years of further experimenting and perfecting led, in 1927, to the opening of regular overseas telephone service between the United States and England. Since then service has been extended to more than 100 countries and territories overseas, and it is possible now to reach some 96% of the world’s telephones from any telephone in the United States. Today, overseas conversations take place at the rate of over 1,000,000 a year. Overseas centers in New York, Oakland and Miami furnish the overseas radiotelephone service, handling calls in much the same way as other long distance calls.

Now, to handle more calls and for greater dependability in telephoning between this continent and Great Britain, the first transatlantic cable is being built. Another cable is being built to Alaska, which will be able to carry 36 conversations at a time, and will be immune to atmospheric disturbances that sometimes affect radiotelephone circuits. There is also a new method of radio transmission, called “over-the-horizon,” soon to be introduced between Florida and Cuba. This will provide needed additional telephone channels and will also open up the possibility of television service over the route.

Radio and television networks

Not everybody realizes that network radio programs go over telephone channels from point of origin to the local radio stations that actually broadcast them. The Bell System’s experience in serving radio networks dates from 1923, when network broadcasting began. Today, in order to link the nation’s radio stations, Long Lines operates about 200,000 miles of program transmission circuits. And within their own territories, the operating telephone companies, too, furnish some program circuits.

Bell System scientists pioneered also in sending television images from one place to another, by both wire and radio. The years of experience in serving radio networks have been invaluable in solving the problems of TV network transmission. As of July, 1955, the System linked about 365 TV stations in about 240 American cities. To keep pace with the latest developments, the nationwide TV network has been equipped for color programs, which are available to over 230 stations in about 130 cities.

Color and Monochrome Available To Cities On These Routes

Routes Equipped For Monochrome Only

Planned

Other “Custom-tailored” services

Long Lines and the operating companies also provide extensive private line services—that is, service for customers who have a large enough volume of communications between two or more points to need facilities for their exclusive use, tailored to their individual requirements. The private line services are provided by means of both wire and radio, for a specified period of time and usually on a recurring basis. Many American industries, the press and governmental agencies use these services, which include telephone, teletypewriter, teletypesetter, radio and television network transmission, facsimile and telephotograph.

Teletypewriter service transmits typewritten messages from one point to another, whether the sending and receiving machines are in the same building or across the continent. Teletypesetter service, by means of electrical impulses sent over Bell System circuits, makes it possible to set type for newspaper or other publication use speedily and from a distance. Facsimile service reproduces documents, drawings and maps at the distant end and telephotograph service does the same for pictures.

“General Staff” services benefit all

Serving the local communities in their territories is the responsibility of the operating companies. There are, however, general problems shared by all the companies. In order to handle these problems efficiently and at reasonable cost, the operating companies contract with the AT&T Company for those things that a centralized organization can do better and more economically.

This contractual relationship is an outgrowth of the original licensing arrangement, in which the first telephone companies obtained instruments for the use of their subscribers. It was founded on the necessities of the business. It exists today for the same reason.

To meet this responsibility, AT&T is organized to serve the operating companies in matters of engineering and operation, finance, accounting and law, and to assist them in other ways that may help them in conducting their business.

Through AT&T, patent rights covering the results of Bell System research in communications are made available to the operating companies. It is the System’s policy also to make licenses under such patents available to others outside the System on reasonable terms and on a non-exclusive basis.

Among the many AT&T staff services to the telephone companies are those described as “operation and engineering.” These include the entire range of construction, operation, maintenance, methods and practices. The AT&T general staff constantly studies new ideas for improved equipment and practices that may originate anywhere in the System. Promising ideas are developed and tested, usually in collaboration with the Bell Telephone Laboratories. Improvements that result are spread over the whole Bell System.

Besides operation and engineering services, other AT&T groups help the telephone companies devise better business and office routines. Still other groups advise the companies on the most efficient methods in accounting, statistical analyses, public relations and advertising activities, and in all the many other phases of the telephone business.

Out of the savings of the many

One of AT&T’s most important services to the operating telephone companies is financial assistance. This is especially true in periods of rapid growth, like the present. In these times the telephone companies need vast sums of money for equipment and buildings to expand and strengthen the nation’s communications network for defense, and to meet the public demand for telephone service.

The money for improving and expanding telephone service comes from people in all walks of life. It comes from the savings of the many, not the wealth of the few. Most of this money is invested in securities of the AT&T Company, which in turn supplies funds to the operating companies.

By mid-1955 AT&T was owned by about 1,375,000 people. These owners live in all parts of the country, in large cities, small towns and rural areas. They are truly a cross-section of America.

Many AT&T share owners are long-time investors. More than a fourth of them have owned their AT&T stock ten years or more. And over 60 per cent of these have increased their investment during those ten years.

About 351,000 of the shareholdings represent two persons—husbands and wives, mothers and daughters, sisters and brothers—who have invested savings in their joint names.

Besides the direct owners of AT&T, many other people—such as insurance company policy holders and bank customers—help indirectly to finance the business through the AT&T shares held by organizations and trustees. The largest AT&T shareholder is a nation-wide investment firm that holds stock for thousands of customers. Among other institutional holders are some 2,100 churches, 1,100 hospitals and homes, over 1,000 schools and libraries, over 500 foundations and charities.

More than 200,000 Bell System employees own AT&T stock purchased under payroll sayings plans. Many of these, together with other employees, are now buying shares under the current payroll sayings plan.

Such widespread ownership by investors helps make possible the good telephone service you get today.

Ideals and aims

The management of the Bell System recognizes its responsibility to treat fairly telephone users, employees and share owners. It believes that the interests of these three great groups of people are linked closely together.

Management’s aim and responsibility is to see that telephone users get the most and best possible service. The cost of service must be as low as may be consistent with good wages and working conditions for employees and with a reasonable return for share owners on their investment in the business.

The Bell System believes that the most and best possible service means telephone service for the nation that, so far as possible, is free from imperfections, errors or delays—service that enables anyone, anywhere, to pick up a telephone and talk to anyone else, clearly, quickly, at reasonable cost.

Research Improves Telephone Service

Telephone research began in 1876 in the Boston attic where Alexander Graham Bell carried on his first successful experiments on the “electric speaking telephone.” From Bell’s modest beginning has evolved the Bell Telephone Laboratories of today, where over 9,000 scientists, engineers, technicians and auxiliary personnel constantly seek ways to improve telephone service, widen its usefulness, and keep its cost low.

Some members of the Laboratories are engaged in basic research. They explore the physical sciences—physics, mathematics, chemistry—seeking basic knowledge that may contribute to better communications. Fundamental development is the second step in the chain leading toward manufacture and use. In the third step, groups engaged in systems engineering plan how the new knowledge and discoveries of research can be used to create new facilities for telephone service, improve service, or reduce costs. Final step is the specific development and design of new systems or products. This involves the construction of laboratory models, trial models, service tests, and preparations for mass production.

This description is, of course, a highly simplified account of the work of the Laboratories. The broad functions of research and development constantly merge. At all times there must be close co-operation among various groups in the Laboratories, between the Laboratories and the telephone companies, where models are tried out, and between the Laboratories and Western Electric, where products are manufactured.

Here is just one example of the way research and development have extended telephony, improved it, and reduced its cost:

Many years ago, the use of a pair of wires instead of a single, grounded wire greatly improved transmission and made it possible to talk longer distances. This increased the demand for service but also increased the number of wires strung on telephone poles. The large number of wires on towering poles along city streets began to cast shadows of doubt on the prospects for further growth. Compact cables had to be developed and a way found to run them underground. Years of painstaking study and trial accomplished this. Now some exchange cables contain as many as 2,121 pairs of wire.

This cable evolution illustrates the dollar value of telephone research and development. The standard cable of 1888 contained 50 pairs of wires and its installed cost was more than $150 per pair-mile. In 1954, despite rising costs, underground cable cost in the order of $20 per pair-mile in place, and much of it was 2,121-pair.

A few milestones in research

Through the years Bell Laboratories has led progress in communications and electronics. No scientific achievement has had more far-reaching effects on communications than the Laboratories’ work in the development of the vacuum tube. Bell scientists were the first to devise a practical amplifier tube which, placed at intervals in long distance lines, restored the energy of weakening voice currents, making it possible to telephone from coast to coast.

The Laboratories was the first to develop automatic equipment that can “remember” telephone numbers and perform other complicated operations in the central office.

By means of filtering apparatus, developed by the Laboratories, one high frequency “carrier” can carry many speech currents at the same time. Largely because of carrier telephony, the Bell System has been able to reduce greatly the cost of long distance telephone service.

The Laboratories pioneered the development of coaxial cable and microwave radio-relay systems. Both can be used to transmit television programs and hundreds of telephone conversations.

Among the many other achievements of the Laboratories have been important contributions to the design of computers—the amazing electronic machines that can work out problems that might otherwise take months or years of work by mathematicians.

A few years ago, scientists at the Laboratories invented the transistor. This is a radically new device, simple in design and tiny in size, that performs most of the functions of the vacuum tube and does other things besides. Its effect on communications technology promises to be revolutionary.

Early in 1954, the Laboratories announced a device that realizes one of the ancient dreams of mankind—the Bell Solar Battery, which converts the sun’s light directly into useful amounts of electricity. Research that led to the transistor led also to the battery—and to a tiny and durable switch that one day may handle the automatic switching of your telephone calls, and other things not yet imagined.

The Laboratories and national defense

The Laboratories makes its services available to the armed forces for work to which it is uniquely suited. It specializes in military communications and those instruments of war that depend heavily on communications and electronics.

In carrying out its military responsibilities, the Laboratories follows the same time-tested pattern that guides its Bell System activities. Its military work grows out of research, fundamental development, systems engineering, and finally specific development and design.

Reliability and trouble-free operation throughout long life are objectives of the Laboratories in designing new equipment and products for the Bell System. The same objectives are also very important in designing military equipment. Because of this similarity in the two fields, scientists and engineers in the Laboratories often divide their working days between Bell System and military problems. Personnel moves frequently between the two fields of endeavor. Thus the Laboratories’ long experience in the peacetime science of telephony helps strengthen the nation’s defense—and discoveries that grow out of military preparedness help strengthen and improve the nations telephone system.

Service of Manufacture and Supply

The manufacture of reliable, standardized telephone apparatus is a major responsibility of another Bell System unit, the Western Electric Company. It supplies to the operating companies telephone equipment of high quality at reasonable prices.

Western Electric also buys for the operating telephone companies supplies that it does not itself produce. Since large quantities are required, this arrangement results in important economies.

Western Electric speeds delivery to the telephone companies of the right equipment and materials, and the right time, from stocks maintained in distributing houses from coast to coast.

Also, specially trained western Electric forces install for the Bell companies most of the complicated central office equipment required to connect all parts of the telephone system.

Experience has proved the great value of centering these responsibilities in an organization that works as a unit of the System toward the same goals as the telephone companies—a service steadily improving and increasing in value to more and more people.

Evolution of an Industry

In the first few years after the telephone was invented, six different manufacturers made telephone apparatus for the Bell companies. Each produced equipment of different design and quality. It quickly became apparent that progress depended upon standardized equipment of the best possible quality.

In 1882, the Bell System purchased the Western Electric Manufacturing Company. This company had grown out of a partnership formed in 1869 by Enos M. Barton and Elisha Gray. It had specialized at first in telegraph and then in telephone equipment. Ownership of Western Electric gave the System assurance of standardized equipment of high quality, reasonable prices, and a dependable source of supply.