Call-Progress Tones, by Country
A reference collection of 1,537 authentic phone tones from 193 countries, covering the dial, ringing, busy, congestion and 42 other call-progress tone types defined by national standards.
A phone tone is a tiny piece of cultural shorthand. The dial tone in a French apartment building does not sound the same as the one in a Berlin office or a Manhattan kitchen, and audiences in each of those places know within half a second whether the phone they are hearing on screen belongs to their country or not. The differences are subtle in isolation and instantly recognisable in context. Getting them right is the kind of detail that nobody compliments and everybody notices when it is wrong. The library documented here is an attempt to make that easy: 1,537 authentic call-progress tones covering 46 different tone types across 193 countries, organised so that the correct tone for any given scene is one search away.
Each tone is built to its national standard rather than approximated by ear, and the collection is structured by country and by tone type so that a sound editor can find the right file in seconds rather than searching through generic "phone busy" libraries that are technically wrong for half the world. The collection ships as 48 kHz / 24 bit WAV files with full UCS 8.2.1 metadata, sold under the SHAPINGWAVES License Agreement for use in film, television, games, radio drama and any other production where authenticity matters.
The tone types covered
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Dial tone
The tone that plays when the user picks up the handset and the exchange is ready to receive call information. The cue that opens almost every phone scene in film and television, and the audible confirmation that the line is live.
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Ringing tone (ringback)
What the caller hears while the destination phone is being rung. Distinct from the ringtone of the destination phone itself: this is the tone the caller hears, not the one the recipient hears. It is the sound that builds anticipation in dialogue scenes between picking up and someone answering.
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Busy signal
Indicates that the called line is occupied. A steady pulsing tone with a long history of dramatic use, from the unanswered call in a thriller to the abruptly disconnected line in a comedy.
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Congestion or reorder tone (fast busy)
Played when the network cannot complete the call because the lines or switching equipment necessary to set it up are temporarily engaged. A faster, more urgent variant of the busy signal, often called "fast busy" in everyday language. Common in disaster scenes and overloaded-network scenarios.
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Special information tone (SIT)
The distinctive three-note sweep heard before recorded announcements such as "the number you have dialled is not in service". Originally designed so that automated call-failure equipment could recognise the message that follows, but instantly recognisable to human listeners as well, even when they cannot quite remember why.
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Call waiting (zip tone)
Heard during an active call to indicate that another caller is trying to reach the line. A short signal sized so that it cuts through speech without ever being mistaken for it.
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Disconnect, confirmation, holding and other supervisory tones
The remaining tones in the collection cover the rest of the supervisory vocabulary: disconnect tone (the far end has hung up), confirmation tone (the exchange has accepted a service request), holding tone, recorder warning tone, stutter dial tone (used as a message-waiting indicator), the "call dropped" tone heard on mobile networks and a number of less common signals.
"A massive collection of every phone call sound I'll ever need, perfectly categorized."
What a call-progress tone actually is: a short primer
The grammar of telephony
Every call-progress tone is built from the same vocabulary: one or more pure sustained pitches, switched on and off in a recognisable rhythm. The combination of pitch and rhythm is the "shape" of the tone. Two tones in different parts of the world might be playing the same note but switching it on and off at different rates, or playing different notes at the same rate, and the result is unmistakeably distinct to a listener from either side. Modems and fax machines were built to recognise these signals automatically, which means national specifications for each tone are tightly defined and tightly enforced. Drift outside the spec by a small amount and the network drops the signal entirely.
Why the same tone is different in different countries
Each national telephone system has its own plan defining what a dial tone, a ringing tone, a busy signal and so on should sound like inside that country. Most of Europe shares one template with several national exceptions, North America uses a different template entirely, the UK and a handful of other countries kept their own plans for historical reasons, and a few systems sit on no template at all. Each of those plans is captured in the library, in the form it actually has on the line.
Why audiences notice immediately
Audiences process call-progress tones below the level of conscious attention. A British viewer hearing a North American dial tone in a scene set in a London flat will register it as wrong without being able to articulate why; an American viewer hearing a European busy signal in a scene set in Chicago will do the same. Period drama is even less forgiving, since national tone plans have been revised over the decades, and using a contemporary tone in a 1950s scene (or a modern continuous dial tone in a country that historically used an interrupted one) breaks immersion in a way that costumes and set dressing cannot compensate for. The library is organised by country and tone type to make finding the right one for a scene a matter of two filters in a sound-effects browser.
From copper to digital, and what survived
The tones originated as analogue signals generated by the central office switch and sent over the copper pair to the calling party. As switching moved to digital and then to voice over IP, the same tones continued to be produced, often by the local switch or even by the telephone itself, generated digitally to the same national specifications as the original analogue era. Modern signalling protocols such as SS7 carry call status as data rather than as audio, so a ringback heard on a long-distance call may be generated locally by the home network rather than by the destination switch. The tones in this library follow the standardised specifications, which means they correctly represent both the analogue era and the modern digital networks that emulate it.
How the material is typically used
In post, this kind of source material falls into a few common buckets. As literal call sounds in dialogue scenes (the moment before someone picks up, the busy signal that triggers a plot beat, the special information tone that precedes a "this number is not in service" voicemail). As atmospheric layers in office and call-centre scenes, where a faint ringing tone or congestion tone underneath the dialogue grounds the location. As source material for sound design, where a stutter dial tone or special information tone can be pitched, looped or modulated for tech-themed UI design. And as period-correct detail in historical drama, where the right tone for the right country and decade is the difference between a believable scene and one that takes the audience out of it.
- File count
- 1,537 WAV files
- Tone types
- 46 distinct call-progress tone types
- Country coverage
- 193 countries, organised by country and tone type
- Sample rate / depth
- 48 kHz / 24 bit, WAV
- Standards followed
- Each tone built to its own national specification
- UCS category
- TELEPHONE (with country and tone-type subcategories)
Cataloguing: UCS and forty languages
Every WAV in the collection follows UCS 8.2.1 naming and carries more than twenty fields of embedded metadata, written into BWAV, iXML, LIST/INFO and Soundminer chunks: CategoryFull, Category, SubCategory, CatID, FXName, Description, BWDescription, CDDescription, CDTitle, Recordist, Designer, Artist, Manufacturer, Publisher, Source, URL, VendorCategory, ixmlNote, OpenTier, LongID, ShortID, Library, Keywords, TrackTitle, Microphone, Location, MicPerspective, RecMedium, RecType, Track, Version, ISRC.
The descriptive fields (Description, BWDescription, CDTitle, TrackTitle, CDDescription, FXName and Keywords) are translated into forty languages, including Arabic, both Chinese variants, French, German, Hindi, Japanese, Korean, Portuguese, Russian, Spanish, Turkish and Vietnamese, and ship as TSV and XLSX sidecars next to the audio.
"A massive collection of every phone call sound I'll ever need, perfectly categorized. Every project I work on films in several different locations around the world and now I can quickly access the correct phone sounds needed for any scene."
George Haddad, Supervising Sound Editor, Formosa Group Burbank"The ShapingWaves collections are full of extremely well recorded, professionally catalogued dynamic sounds. SHAPINGWAVES has assembled unique library material that pushes each one of its categories to the next level, very useful for sound designers everywhere."
Wylie Stateman, Sound Designer (Deepwater Horizon, Shrek, Kill Bill 1+2, Tron)"ShapingWaves is a place I go to when I need an obscure and/or well recorded sound source. Very cool stuff!"
Matt Temple, Sound Supervisor (The Passion of the Christ, The Office)The work documented here lives on as the Phone Call Tones sound library, distributed as a 48 kHz / 24 bit WAV download of 1,537 files with full UCS metadata, under the SHAPINGWAVES License Agreement for use in film, television, games and other media productions.