20 Ways Old-Fashioned Telephone Calls Were Anything But Private

In 1950, roughly three out of four homes with Bell System phone service were sharing a single line. That meant anywhere from two to 16 families shared a single pair of copper wires. Only one family could use the phone at a time. If your neighbor was on the phone, you would hear them through the receiver.

Doris Day played an interior decorator, and Rock Hudson a songwriter, in the Universal Pictures 1959 comedy Pillow Talk, in which they were forced to share a New York City party line. He used it to croon to his girlfriends, while she accused him of eavesdropping while she was attempting to run a business on the phone. Their story was pure fantasy, yet the conflict was so realistic that all moviegoers understood it instantly.

In the 1890s and early 1900s, large phone companies refused to run expensive pole lines out to isolated farms throughout the Midwest, the Plains, Texas, and parts of Canada. Homesteaders took matters into their own hands and strung hand-cranked, wall-mounted telephones onto their barbed-wire fences, connecting the fence wire to the telephone using glass bottle necks or leather straps as insulators against the wooden fence posts. Sometimes 20 farm families would share a single circuit on one fence wire, and although it would crackle during heavy rainfall, it would still get them through to a doctor in an emergency.

Housing boomed after World War Two, and with it came party-line gridlock, so bad that sometimes neighbors couldn’t call for a doctor or firemen because someone else refused to let go. In October 1954, New York criminalized knowingly refusing to relinquish a party line after being notified of its need for a medical, fire, or police emergency. Offenders were subject to a fine or imprisonment of no more than one year in county jail; most states followed suit.

In the old mid-century phones, the carbon button microphones were powered directly by the line when the handset was off-hook. If a neighbor lifted his or her phone to listen in on a conversation between other neighbors, the additional current drawn by that second microphone would cause the voltage on the line to drop, giving you a little “click” as well as muting the two callers. You couldn’t buy this feature on your phone. It just happened. But old-timers learned to identify it and call out the name of whoever was listening in.

From the 1870s through the mid-1900s, there was no dial on a home phone; you simply picked up the phone, which would summon a female switchboard operator at a company like Bell to ask, “Number, please?” The operator would plug in patch cords to make the connection. It was against company policy to stay on the line and eavesdrop, and you were fired if you were caught. But on a small or rural exchange, an operator could easily go back onto the line without anyone noticing.

In the ’50s, when suburbs were booming, teens monopolized their phones, often keeping a party line occupied all evening and annoying parents stuck on the same circuit. Regional Bell phone companies distributed etiquette guides in high schools, like this 1956 booklet, How to Be the Teen Queen of Your Party Line, which advised young people to avoid long phone calls, never discuss gossip on a shared line, and listen for the phone before calling.

Once the United States got involved in World War Two in December 1941, copper was allocated only for the manufacture of military radios and ammunition, and a federal wartime order prohibited telephone companies from installing any new private lines in residences. In order to meet growing demand and conserve copper, the Bell System required that every new residence be equipped with a party line. It wasn’t the telephone company’s fault. It was a federal order. It took until the late 1940s before people could get a private line.

If your family or one of your boarders lived in one of the crowded industrial centers of America, such as New York or Chicago, in the early-to-mid 1900s, a private phone was usually out of financial reach. Instead, your landlord installed a single coin phone or wall extension in the stairwell, and whoever happened to be nearest answered it, calling out down the hall who it was for. In other words, home meant a trip down the hall to find the telephone.

Party-line complaints were so frequent after World War Two that AT&T asked a group of professional puppeteers to develop public service announcements to educate people on proper etiquette when using their phones. Party Lines (1947), produced by Eddie Albert Productions with marionettes provided by Bil and Cora Baird, was presented to audiences at movie theaters, schools, and civic organizations. The show instructed viewers not to eavesdrop on others’ conversations, keep their calls brief, and hand over the phone immediately if someone needed to make an emergency call.

A long emergency ring from the operator or a neighbor on rural party lines signaled trouble. Dozens of farm families would pick up their telephones at once to listen in on what happened, an activity called “rubbernecking” in those days, the same term later used to describe motorists who slowed down to look at a traffic accident. The drain on multiple telephone sets caused the line’s voltage to sag, making the conversation hard to hear, and volunteer fire department chiefs had to shout and plead for people to hang up.

On early switchboards, you could not send a signal to one house without ringing all the houses on that same line. As a result, companies assigned different combinations of long and short rings to each home on the same line, which we called code ringing. If your phone rang twice with long rings and once with a short ring, you knew that was your house’s call code. Those on the other end of the line also got the same ringing, but they were supposed to ignore it.

In order to keep all the phones on a line from ringing with each call, engineers at the Kellogg Switchboard Company and Bell System created harmonic selective ringing in the early 1900s. The central office sent ringing current at different frequencies and each house’s mechanical bell was tuned to respond to only one. That solution stopped the noise of the bell, but did not prevent neighbors from listening in on conversations.

If you dialed a neighbor with the same party line on the rotary-dial exchanges of the 1920s to the 1950s, all you got was a busy signal because you were both connected to the same line. The workaround was to dial a code for a “reverting call,” then hang up immediately. The exchange sent ringing current down the line to ring the neighbor’s bell. When the neighbor picked up, you picked yours back up and talked.

In some of the old party-line switches, leaving your receiver off the hook actually kept the line “busy” for all subscribers on that particular party line. If your heavy Bakelite phone was accidentally knocked off the hook, nobody on that line could place or receive a call until someone either put the receiver back on the hook or called a repairman.

Prior to the late 1960s, evidence obtained merely by tuning into someone’s party line was usually admissible in state court. Sometimes this meant tapping into the suspect’s own phone wire, other times borrowing a sympathetic neighbor’s. The Supreme Court in Schwartz v. Texas (1952) held that the federal limitations on wiretapping didn’t necessarily exclude evidence obtained in this way from state court proceedings, a ruling about admissibility, not about whether a party line deserved protection from eavesdropping. But in 1968, the Supreme Court held that such evidence was inadmissible.

When the Depression arrived, phones were viewed by many as unaffordable luxuries, and total residential phone subscriptions in the United States fell 25 percent from 1929 to 1934 as subscribers trimmed back on their services. In order to keep their customers, telephone companies offered deeply discounted two- and four-party lines, and millions of families that had been receiving private service switched to sharing their lines with random people they had never met. By the end of the decade, line-sharing was common and normal.

Decades before telephone regulations were relaxed, your desk phone was not your property. Under the terms of the Bell System’s rates and tariffs, you did not own your house phone; you leased it. Bell kept title to all phones, cords, and wires connected to them. You could not remove the covers from any part of the instrument, nor make any electrical connection other than that specified by Bell. And you certainly couldn’t add a fancy rotary dial faceplate or a newfangled answering machine. If you broke the terms of the contract, Bell would immediately discontinue your service.

Prior to the introduction of automated emergency dispatch in 1968, a caller in crisis on a congested party line depended on the switchboard operator. Operators were permitted to use what was called an emergency cut-in, which allowed them to plug into the circuit and interrupt whoever was talking. They would announce the emergency and tell the callers to clear the line. The caller could hang up, or not, and if they didn’t, the operator could pull out the wire, thus opening the line.

Before radio came to most rural areas in the early 1900s, isolated farming families turned their shared party lines into their own personal radio stations. If one family wanted to broadcast music, they would place a receiver near a piano, banjo, or phonograph horn and send out a ringing call. Neighbors, many miles away, would tune in and simply listen together. At other times, a neighbor who received a daily newspaper would read the headlines and weather report aloud to dozens of families.

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