14From fire alarm boxes to 911

The short version: Boston switched on the world's first municipal electric fire alarm telegraph in 1852, and in 2026 it still keeps about 1,250 red street boxes wired to a central office. Telephone emergency numbers came much later: 999 in London in 1937, 911 in the US in 1968, and 112 across the European Union, adopted in 1991. A modern US call is routed by the caller's location to a call center and logged in dispatch software, and fire crews are often measured against a national response-time standard. The system is now moving from analog phone trunks to internet-protocol networks that can carry text, photos and floor-level location.

What was the first fire alarm system?

Before the telegraph, a fire was reported by running to a fire house, shouting, or ringing a church bell, and the alarm spread as fast as people could run. Boston changed that on April 28, 1852, when its electric fire alarm telegraph went into service, the first municipal system of its kind in the world.⁷⁸ The first alarm came in the next day, April 29, at 8:25 p.m.⁷⁸

The system was invented by Dr. William F. Channing, and Moses G. Farmer helped develop and build it. Farmer became the first superintendent of fire alarm telegraph.⁷⁸ The 1852 network was small by later standards:

• 40 street boxes
• 16 alarm bells
• 3 box circuits and 3 bell circuits⁷⁸

The idea is a fire alarm telegraph: a network of street boxes wired to a central office, where each box identifies itself by its box number when someone pulls the handle. The office then knows which street corner the alarm came from without anyone speaking a word.

The Adams County Museum describes the mechanism in a Gamewell call box: pulling the hook or turning the knob releases a spring-loaded wheel that taps out a pulsed electrical signal matching the box's number, and at the receiving end the number is matched to a list of box locations.²⁹⁹

The IEEE, the electrical engineers' professional body, named Boston's system an engineering Milestone on October 1, 2004, with a plaque at the Boston Fire Department office at 59 the Fenway.⁷⁸ According to the IEEE's history site, the alarm office moved into a fire-resistant building in 1925, gained electronic decoding terminals in 1988, and the network runs independently of telephone and electric utility lines.⁷⁸

Who was Gamewell?

Boston invented the system; a South Carolinian turned it into an industry. Channing and Farmer's patent, "Electromagnetic Fire Alarm Telegraph for Cities," was acquired by John Gamewell.³⁰⁰ After the Civil War, Gamewell partnered with Kennard and Company, and they opened a factory in Newton Highlands, Massachusetts, in 1873.³⁰⁰ By 1886 the Gamewell system ran in more than 250 cities in the US and Canada.³⁰⁰ The company moved to a factory in Newton Upper Falls in 1889 and stayed there until the 1970s, when it became a division of Gulf and Western.³⁰⁰

That is why cast-iron alarm boxes in very different cities often look like cousins: many came from the same few factories outside Boston.

The 1872 fire and the locked boxes

Twenty years after the telegraph opened, it faced its worst test. The Great Boston Fire began on the evening of November 9, 1872. Wikipedia's account puts the start at 7:20 p.m. and the first alarm, from Box 52 at Summer and Lincoln streets, at 7:24 p.m.³⁰¹

The delay that mattered came before anyone could pull the hook. "All of the fire alarm boxes were kept locked," and only a few citizens in each area held keys.³⁰¹ Firefighters arrived about twenty minutes after the fire was first noticed.³⁰¹ The department's horses had also been weakened by an outbreak of equine influenza, but the post-fire commission found the delay from the missing horses was only "a few minutes."³⁰¹ Calls for help to other towns were slowed because most telegraph offices had closed for the night.³⁰¹

The toll was 776 buildings on about 65 acres (26 hectares) and $73.5 million in damage, about $1.98 billion in 2025 dollars.³⁰¹ Deaths are reported as anywhere from 26 to "at least 30," including 11 firefighters.³⁰¹ Sources disagree on the details: different parts of the same Wikipedia article give different start times and death tolls, and both the locked boxes and the horses should be read as reported factors, not settled single causes.

Are fire alarm boxes still used?

In Boston, yes. As of April 2026, the city has about 1,250 street fire alarm boxes and about 1,200 master boxes, which connect schools, hospitals, libraries and other buildings straight to the fire department.⁷³ A team of 13 maintains the network, and vehicle crashes are a common cause of damage.⁷³ Box numbers now appear on a computer screen at the alarm office instead of on punched ticker tape.⁷³

The count has fallen. In 2013 Boston had "nearly 2,200" street-corner boxes and issued a request for information on how to modernize them; false alarms made up roughly 90 percent of box alarms at the time.³⁰² The 2013 and 2026 figures may not count the same things, so treat the drop as a trend, not an exact number. The IEEE's history site gives yet another older count of about 1,500 street boxes and over 1,000 master boxes.⁷⁸

The case for keeping them was made in June 2024, when a 911 outage hit and Police Commissioner Michael Cox told residents to use the street boxes.⁷³ Our reading: a separate wired network that does not depend on the phone system is the point of the boxes, not a leftover. (More on what runs under the pavement in 311, the wires under the street, and city data.)

Not every city agrees the cost is worth it. Salem, Massachusetts, is decommissioning its system because of cost.⁷³ New York City tried to remove about 15,000 street emergency boxes, but in 2011 a court denied the request.³⁰³ The court found that the city's proposed alternative, street pay phones with a tapping protocol, would discriminate against deaf people under the Americans with Disabilities Act, and it left in place a 1996 injunction won for the Civic Association of the Deaf.³⁰³

How it changed: 999, 911 and 112

The street box tells responders where. The telephone added what, but needed an operator, and in an emergency the operator could be the bottleneck.

London, 1937. The world's first emergency telephone number, 999, launched in London on June 30, 1937.³⁰⁴ It was prompted by a 1935 fire in Marylebone that killed five women.³⁰⁴ On July 7, 1937, a 999 call led to an arrest about four minutes later.³⁰⁴ The number reached Glasgow in 1938 and the whole of the UK in 1976.³⁰⁴

The US, 1968. Fire chiefs urged a single national number in 1957, and in 1967 the President's Commission on Law Enforcement and Administration of Justice recommended one.³⁰⁵ The first 911 call was made on February 16, 1968, in Haleyville, Alabama, on the Alabama Telephone Company network: Alabama House Speaker Rankin Fite called Rep. Tom Bevill at the police station.³⁰⁵ Adoption was slow. 911 covered 17 percent of the US population in 1976 and 50 percent by 1987.³⁰⁵

The EU, 1991. Council Decision 91/396/EEC, of July 29, 1991, introduced 112 as the single European emergency number, to run alongside national numbers, with a 1996 deadline for public networks.³⁰⁶ Later EU laws added free calls, caller location (2002), access from internet phone services (2009) and eCall, the automatic crash call from cars (2012-2013).³⁰⁶

Other countries use their own numbers. In Australia, Triple Zero (000) is the main emergency number, 112 also works from mobile phones, and 106 serves TTY users.³⁰⁷ In Japan and South Korea, 119 reaches fire and ambulance services, while police use 110 in Japan and 112 in South Korea.³⁰⁸

The scale today in the US: about 240 million 911 calls a year, with 80 percent or more from wireless devices in many areas, answered at 5,748 primary and secondary call centers (that center count dates from February 2021, and the call estimate is undated).³⁰⁹

How does 911 know where you are?

The call center that answers 911 is a PSAP, a public safety answering point. In legacy "Enhanced 911," the call travels through the phone company's network to a selective router, a switch that picks the right PSAP, and the PSAP then looks up the caller in the ANI/ALI databases: automatic number identification and automatic location identification.⁹⁹

That worked well for landlines tied to a street address. Mobile phones broke the model, so US rules came in stages. Phase I delivers the cell tower and sector; Phase II adds the caller's estimated coordinates. As of February 2021 data, at least some Phase II location was available at 99.2 percent of PSAPs, covering 98.9 percent of the population.³⁰⁹

The next problem is height. A dot on a map does not tell responders which of 40 floors to search. In March 2025 the FCC proposed reporting vertical location, the z-axis, as height above ground level and adding floor-level estimates.³¹⁰ Nationwide carriers would get 24 months to deploy either dispatchable location (a street address plus details like floor or apartment) or validated z-axis technology.³¹⁰ The FCC also asked how to improve location for text-to-911, which "currently lacks precise location data," and whether to retire the legacy Phase II rules.³¹⁰

The FCC's existing rules required wireless carriers to meet horizontal accuracy requirements for 80 percent of calls by April 2021.³¹¹ For height, a 2019 FCC order (published January 16, 2020) adopted a z-axis metric of 3 meters above or below the handset for 80 percent of indoor wireless 911 calls from z-axis-capable devices, which nationwide carriers had to meet in the top 25 markets by April 3, 2021, and the top 50 by April 3, 2023.³¹¹ A July 2020 FCC order required nationwide carriers to provide z-axis capability by 2025 and gave non-nationwide carriers an extra year, until April 2026.³¹²

A US call today goes roughly like this: the caller dials, the carrier attaches a number and a location estimate, and a router picks the PSAP. A call-taker answers, sees the location on a map, and enters the incident into dispatch software; a dispatcher then sends units.

Dispatch, response times and radio

CAD, computer-aided dispatch, is the software that logs each incident and helps assign units; AVL, automatic vehicle location, tracks response vehicles by GPS so dispatch can see which one is closest. That is the general shape; vendors and cities set them up differently.

Phoenix's regional dispatch center gives one example: its CAD uses GPS to know where every unit is, recommends units based on preset response requirements for each call type and the known location of available units, and an operator reviews and can change the recommendation before dispatching.³¹³

How fast are fire crews supposed to arrive? Many US fire departments measure themselves against NFPA 1710, a consensus standard for career fire departments. As summarized by the District of Columbia's fire department, it sets:

Departments are expected to meet these on at least 90 percent of incidents.³¹⁴

How do responders talk? Radio is the other half of dispatch. P25 (Project 25) is a digital radio standard meant to let public safety radios from different makers work together, and P25 equipment goes through a federally backed Compliance Assessment Program that decides whether it can be bought with grant money.³¹⁵ Alongside radio, US agencies increasingly use FirstNet, a public safety broadband network. The FirstNet Authority was created by a 2012 law; in March 2017 it signed a 25-year contract with AT&T, which runs the network on 700 MHz Band 14.³¹⁶ AT&T finished the initial buildout in March 2023, and by the end of 2024 the network had over 6.7 million connections and 29,500 agencies.³¹⁶

How does the alert reach my phone?

In the US, the loud buzz on your phone for a flash flood or a missing child is a Wireless Emergency Alert (WEA). The first one went out on June 28, 2012: a National Weather Service flash flood warning near Santa Fe, New Mexico.³¹⁷ The path runs from an authorized warning in a standard format (CAP) to FEMA's IPAWS hub, then to wireless carriers, then out as a cell broadcast that phones in the area receive, with no app needed.³¹⁷ The message limit rose from 90 to 360 characters in 2020, and the Weather Service alone had sent about 60,000 WEAs as of 2022.³¹⁷

Because it is a broadcast from the tower, not a text to each number, the system does not need to know who is in the area, which is also why everyone in a crowded room tends to get the alert at once.

What is 988?

Since July 2022, the US has had 988, a three-digit number for the Suicide and Crisis Lifeline, as an alternative to 911 for people in mental health crisis.³¹⁸ From July 2022 through September 2025, about 19.1 million calls, texts and chats were routed to crisis centers. Over that time calls rose about 87 percent, texts about 260 percent and chats about 23 percent.³¹⁸ As of March 2026, 988 calls are georouted by the caller's approximate location, and texts are to follow by April 2027, according to a July 2026 GAO review.³¹⁸

In Boston

Boston runs both eras side by side. The 1852 telegraph's descendants, about 1,250 street boxes and 1,200 master boxes, are maintained by a 13-person team, and they served as a backup during the June 2024 911 outage.⁷³ Boston's boxes are also the basis of Alarm Club, a street game built on the 1852 network.

On the medical side, Boston EMS's 2024 figures give a sense of a big-city ambulance service's workload:⁹⁶

• 140,701 clinical incidents and 166,422 responses
• 93,774 patient transports
• Peak staffing of 21 basic life support and 5 advanced life support ambulances from 17 stations
• 472 budgeted full-time positions

Its median response time for Priority 1 calls, the most urgent, was 7.3 minutes in 2024, against the service's own goal of 6.0 minutes.⁹⁶

What's changing now (2026)

Next Generation 911. The biggest change is under the hood. NG911 replaces analog phone trunks and selective routers with an IP network, the ESInet (Emergency Services IP Network), which can carry text, images and rich location data to the PSAP.⁹⁹ The FCC adopted its NG911 order in July 2024; it took effect November 25, 2024, and its information-collection provisions became enforceable March 25, 2025.⁹⁹³¹⁹ It works in two phases:

• Phase 1: phone and internet providers must deliver 911 traffic in IP (SIP) format to the ESInet.⁹⁹
• Phase 2: they must use standard NG911 signaling, embed the caller's location in the call itself, and use a location server.⁹⁹

The clock starts only when a 911 authority files a valid request. Nationwide wireless, internet phone, text and most landline providers then get 6 months per phase; rural incumbent landline carriers, smaller wireless carriers and internet relay providers get 12 months.⁹⁹ Because each state or region has to build its ESInet and file requests, NG911 coverage in 2026 likely varies a great deal by place.

Massachusetts was early: according to the State 911 Department, its new digital statewide system went live in December 2017, replacing the analog one, with 232 PSAPs at the end of 2018 and text-to-911 added around the turn of 2019.³²⁰

Floor-level location. The March 2025 FCC proposal on z-axis and floor-level location is the other live rulemaking, aimed at the tall-building problem.³¹⁰

FirstNet's future. FirstNet's authorization is due for renewal by February 2027.³¹⁶

988 routing. Location-based routing for 988 calls started by March 2026, with texts scheduled by April 2027.³¹⁸

The boxes. Boston is keeping its street boxes while neighbors such as Salem take theirs down.⁷³ The choice comes down to how much to spend on a parallel alarm system that is mostly idle until the day everything else fails.

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