Ringing tone

ringback toneringback tonesAudible ringingringbackscaller tuneringbackCaller ring back tonesCaller ringback tonecRBTcustom ringback tone
Audible ringing (ringing tone, colloquially also ringback tone) is a signaling tone in telecommunication that is heard by the originator of a telephone call while the destination terminal is alerting the receiving party.wikipedia
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Ringing (telephony)

ringingmagenta boxcall bell
Audible ringing is typically a repeated tone that is not necessarily synchronous with the cadence of the power ringing signal that is sent to the called party.
It is therefore also commonly referred to as power ringing, to distinguish it from another signal, audible ringing, which is sent to the originating caller to indicate that the destination telephone is in fact ringing.

Signal tone

signaling tonetone transmissions
Audible ringing (ringing tone, colloquially also ringback tone) is a signaling tone in telecommunication that is heard by the originator of a telephone call while the destination terminal is alerting the receiving party.
Typical major signal tones are dial tone, ringing tone, busy tone, and number unavailable tone.

Telephone call

callphone callphone calls
Audible ringing (ringing tone, colloquially also ringback tone) is a signaling tone in telecommunication that is heard by the originator of a telephone call while the destination terminal is alerting the receiving party.
a ringing tone signifying that the called party has yet to answer the telephone

Ringtone

ringtonesring tonePolyphonic
Ringtone
The caller is informed about the progress of the call by the audible ringing signal, often called ringback tone.

Ringback tone advertising

Ringback tone advertising
RingBack Tone Advertising, or RBT-Ads (also known as RingBack Advertising, Ad RingBack, Ad-RBT, AdRBT, Voice Ads, or Biz-Ring), replaces the Ringback tone period, or standard acoustic signal a caller hears that indicates the called phone is ringing, with advertisements or other promotional messages.

Dial tone

dial-tonedialling tonestutter dial tone
Dial tone
Ringback tone

Telecommunication

telecommunicationscommunicationstelecom
Audible ringing (ringing tone, colloquially also ringback tone) is a signaling tone in telecommunication that is heard by the originator of a telephone call while the destination terminal is alerting the receiving party.

Signalling System No. 7

SS7SS7 NetworkCCS7
Audible ringing is usually generated in the switching system closest to the calling party, especially when under the control of strict implementations of Signalling System No. 7 and the Customized Application of Mobile Enhanced Logic (CAMEL) signaling system.

Customized Applications for Mobile networks Enhanced Logic

CAMEL
Audible ringing is usually generated in the switching system closest to the calling party, especially when under the control of strict implementations of Signalling System No. 7 and the Customized Application of Mobile Enhanced Logic (CAMEL) signaling system.

In-band signaling

in-bandin-band signallinginband
It may also be generated in the distant switch, transmitted in-band, so that in analog networks the caller could monitor the quality of the voice path of the connection before the call is established.

ETSI

European Telecommunications Standards InstituteEuropean Telecommunications Standards Institute (ETSI)ETS
Many European countries use tones which follow the recommendation of the European Telecommunications Standards Institute.

Mexico

🇲🇽MexicanMéxico
In North America (excluding Mexico, Central America and parts of the Caribbean), the standard audible ringing tone is a repeating 2-second tone with a 4-second pause between.

Central America

CentralCentral AmericanCentral-
In North America (excluding Mexico, Central America and parts of the Caribbean), the standard audible ringing tone is a repeating 2-second tone with a 4-second pause between.

Caribbean

West Indiesthe CaribbeanWest Indian
In North America (excluding Mexico, Central America and parts of the Caribbean), the standard audible ringing tone is a repeating 2-second tone with a 4-second pause between.

United Kingdom

British🇬🇧UK
In the United Kingdom, Republic of Ireland, Australia, New Zealand, and many Commonwealth nations, it is a double ring.

Republic of Ireland

IrelandIrishRepublic
In the United Kingdom, Republic of Ireland, Australia, New Zealand, and many Commonwealth nations, it is a double ring.

Australia

🇦🇺AUSAustralian
In the United Kingdom, Republic of Ireland, Australia, New Zealand, and many Commonwealth nations, it is a double ring.

New Zealand

🇳🇿NZLNZ
In the United Kingdom, Republic of Ireland, Australia, New Zealand, and many Commonwealth nations, it is a double ring.

Commonwealth of Nations

CommonwealthBritish CommonwealthCommonwealth nations
In the United Kingdom, Republic of Ireland, Australia, New Zealand, and many Commonwealth nations, it is a double ring.

India

🇮🇳IndianIND
In India, the ringing tone is called caller ringback tone (CRBT), which has a duration of one minute. Also known as caller tunes in some countries, such as India, ringback music is a service offered by mobile network operators to permit subscribers to select music or even install personalized recorded sounds for audible ringing.

Mobile network operator

wireless carriernetwork operatoroperator
Also known as caller tunes in some countries, such as India, ringback music is a service offered by mobile network operators to permit subscribers to select music or even install personalized recorded sounds for audible ringing.

Patent

patentspatent lawpatented
Patents for personalized ringback tone delivery systems were first filed in Korea by Kang-seok Kim (10-1999-0005344) in October 1999 and in the United States by Mark Gregorek et al. (U.S. patent 5,321,740), Neil Sleevi (U.S. patent 4,811,382), and Karl Seelig (U.S. patents 7,006,608 and 7,227,929).