Ring back tone - Robi GoonGoon is a Caller Ring Back Tone service that allows you to set a song, tone, music, funny messages or sounds as a Ring-Back Tone for your callers. ... The fall back charging in case of you are having low balance will be applicable as mentioned on the charging section above.

 
Feb 4, 2010 · With a Ring Back Tone, the phone user selects a song instead of the standard ringtone for his/her callers to hear before the phone is answered. 3. Is Ring Back Tone service available to all Digicel customers? The Ring Back Tone service is a network feature and is compatible with all Digicel phones. 4. . Fireflies ai note taker

Ring Back Tone. Overall rating (15 ratings) NuclearTape. June 27th, 2019. Follow. This sound is part of the pack Telecommunication. This is an approximation of the modulated 440Hz tone you hear when waiting for someone to pick up the phone. Made using the Wasp synth in FL Studio.Ring back tones offer subscribers the chance to uniquely register their identity to their callers by greeting callers with their favorite tune, sound, or phrase instead of the usual ringing tone. 6d Technologies offers CRBT, the innovative service giving subscribers the ability to decide what a caller will hear during interconnection.To activate Sada service, send 1616 to 900. To deactivate Sada service, send 1617 to 900. To browse and download ring tones after subscription: Call 1616 or. Log in to Sada webpage. After having the required ringtone code, send an SMS to 1616 containing the code. To cancel and remove the ring tone from your library, send an SMS containing the ... In North America, the default ringback tone is a repeating 2-second tone with a 4-second pause in between. While the ringback tone in Japan is a repeating 1-second tone with a 2-second pause in between. Each country has a unique ringback tone and it can be confusing to callers if they are not used to or aware of it when making calls. A ringback tone is the sound callers hear while the phone is ringing. By default, the telephone exchange plays the ringback tone corresponding to the …Jun 18, 2014 · Here we aren't taking about ringback tone , the call is in answered state. If you look at the cucm traces you will get to know how call was answered and moh was played. Here is the time line from the traces... 14:10:44.570 - INVITE sent to CUCM by VG 14:10:44.590 - INVITE relayed to CUC 14:10:44.607 -Received ringing and sent back ringing to VG Step 3: Personalize Tones. To create personalized tones for AT&T, go to ‘ Manage Ringback Tones ‘ link and then go to ‘ Callers and Groups ‘ section. Add callers to specific answer tones by listing their numbers. With that, your job is done. Just save changes and log out. In this episode, Chad talks about banjo tone rings. Learn what the differences are between all of them.For any questions or if you need any banjo related hel...But after call are forwarded to extension there is no ring back tone. For example.. While greetings is played i dialed 2,then call 14753.Call is connected. But no ringback tone. So that i am not able to understand phone is ringing or not. CUCM and CUC is SIP integration. H323 with PSTN. Please help me to solve the issue.How to change a ring back tone for the country your Switchvox is located in. Number of Views 649. How to change ring back tone. Number of Views 1.06K. How do I fix issues with ringback with FreePBX and Digium Digital card. Number of Views 1.26K. How to configure a Digium E1 PRI card. Step 2. Send a text message to number "728" and in the message type either "RBT", "List" or enter the 3 digit code for the Ringback Tone you would like to purchase which can be found on the official Ringback tone website listed at the bottom of this page. You can then demo songs and purchase them right from your phone. RING (SOMEONE) BACK definition: 1. to call someone who called you earlier, or to call someone for a second time: 2. to call…. Learn more.Call Ring-back Tone (called Coloring) When someone calls you from a mobile phone or a general phone to a mobile phone user, this colorful service lets the caller hear various distinctive sounds, newest songs, sound effects and voices instead of the ring back tone (dial tone). This supplementary service enables the person calling you to wait ...Dec 22, 2023 · To change your ringback tone on your Samsung phone, follow these simple steps: 1. Open the settings menu on your phone. 2. Scroll down and tap on “Sounds and Vibration” or a similar option. 3. Look for the “Ringtone” or “Phone ringtone” option and select it. 4. You will see a list of available ringback tones. 23:14 Jun 26, 2014. English to Portuguese translations [Non-PRO] General / Conversation / Greetings / Letters. English term or phrase: ring-back tone. When the ring-back tone rings, the user lifts up the handset or the receiver of external telephone to speak. PT-BR*. Andre Damasceno.Dial Tone, Busy and Ringback Signals by Country. Refer to the following tables for dial tone, busy, and ringback signals by Country: Dial Tone Signal by Country. Country. ... Ring-back Signaling by Country. Country. Frequency. Second Frequency component (if used) Cycle Duration. Period 1 On. Period 1 Off. Period 2 On.1.7K views, 121 likes, 3 loves, 3 comments, 6 shares, Facebook Watch Videos from stc Bahrain: This Eid, add up to 5 Ring Back Tones in a single shuffle... 1.7K views, 121 likes, 3 loves, 3 comments, 6 shares, Facebook Watch Videos from stc Bahrain: This Eid, add up to 5 Ring Back Tones in a single shuffle playlist and greet all those who call you with...呼出音は英語ではリングバックトーン(ringback tone)と呼ばれ電話交換機から発信者に対してに送られる音です。 着信音を変更できるということをご存じの方 …In the iTunes Store on iPhone, buy ringtones, text tones, and other alert tones for clock alarms and more.Ingin mengganti ke layanan RBT (Ring Back Tone) yang lebih baru dan lebih fleksibel. Cara Mematikan NSP Telkomsel. Ada beberapa cara untuk mematikan NSP Telkomsel, di antaranya melalui SMS, telepon, dan aplikasi MyTelkomsel. Melalui SMS. Untuk mematikan NSP Telkomsel melalui SMS, ikuti langkah-langkah berikut: Buka … Hollywood sound effects for TV, film, ads and video games. Make sure your spelling is correct. Otherwise, try browsing our categories below. Free ringback sound effects. Download royalty-free ringback sounds from our library of 450000+ SFX for TV, film and video games. There is a problem wisth 180/183 Message with SDP but without RTP. When CUCM receives that message, no Ring Back Tone is played. (CUCM 8.6 was used) What's more: 1. When Ipphone receives 183 (SDP) - remote device is sending RTP stream and later ipphone receives 180 (no SDP) -> Ipphone does not switch to play local RBT. 2.1) The ringback tone global market size is huge. There are about 150-200 million ringback tone subscribers in the world, and the industry is valued at about $4 billion and growing (based on 2011 survey). Many in the industry see ringback tones as an old feature-phone service that didn’t survive the transition to smartphones.Subscribe Now:http://www.youtube.com/subscription_center?add_user=ehowtechWatch More:http://www.youtube.com/ehowtechPutting ringback tones on iPhone from iTu...The brass Dobson style tone ring is an early style banjo tone that was invented by Henry Clay Dobson and was originally used on his Dobson Silver Bell banjo that was patented in 1881. The Dobson tone ring gives a banjo a good "tubby" and warm bass response with a balanced sparkle on the high end. This type of tonal response is great …10-27-2015 06:04 AM. Alex, This is not a configuration issue. This is how ringback works over sip trunks.. When CUCM receives 180 ringing (without SDP) CUCM plays rigback locally. It instructs the ip phone to play ring back.. When CUCM receives 183 with SDP, it tells the phone to cut through audio and listen to whatever the far end is sending.Personal Ring Back Tone (PRBT) service enables the person who calls you to listen to popular tunes instead of the regular tones. Your friends, family and colleagues can enjoy the tune of your or their choice till you answer the call. You can choose popular songs from a wide list ranging from international chart busters to our local hits and ...A Cisco IP phone user place a call to PBX user, and tone ringback is heard. 10-15-2008 01:24 PM. This could be attributed to the fact that the gateway was unable to determine the progress-indicator in the call setup and consequently could not cut-through the audio befor the call was answered. You could try a couple of commands on the …Ringback Tone. Nice Tone. Spacy Ringback. Ncell. Htc Ringback Tones. Standardringtone. Ringback funny. Leave a message. Yahoo Ringback Tone. Country …Viettel Caller Ring Back Tone (vCRBT) General introduction • vCRBT is a service enabling users to select and change the ring-tone music of incoming or outgoing calls while waiting for a connection. • Deployed in the markets of Vietnam, Myanmar, Laos, …What's CRBT. First from MTC, the call ring back tone (CRBT) service allows you to personalize your incoming calls by selecting music. Rather than hearing a ringing tone until you answer a call, your friends, family and colleagues will hear your song selection. Choose from local to International hits, whacky sounds to pure instrumental and more.But when a caller calls you while waiting for you to pick up their call, you hear a song or musical tone. This sound you hear while the recovery picks up the call is …RFC 3960 Early Media and Ringing Tone Generation December 2004 If the UAC receives early media from different UASs, it needs to present it to the user. If the early media consists of audio, playing several audio streams to the user at the same time may be confusing. On the other hand, other media types (e.g., video) can be presented to the user at the same …The company claims to have invented ringback tones in '02 and currently runs ringback services for 12 cellphone carriers worldwide (Verizon and T-Mobile in the states), so she should know.Dec 7, 2004 · T-Mobile USA subscribers across the country now can ditch the dull switchboard ring that their callers hear, in favor of a tune that represents their unique style, with the launch today of T-Mobile's ringback tone service, CallerTunes. T-Mobile is the first company to launch a ringback tone service nationwide. There are two parts; a Ring Back Tones Store and a Music Store. What does CRBT or RBT Mean? CRBT means Caller Ring Back Tone (or RBT) it is the sound you hear when you call someone before they answer. Typically these are …リングバックトーン ‐ 通信用語の基礎知識. 発呼者に回線交換作業が終了し、被呼者を呼び出し中であることを知らせるための音。 「呼び出し音」ともいう。 業界では略称 …To activate Sada service, send 1616 to 900. To deactivate Sada service, send 1617 to 900. To browse and download ring tones after subscription: Call 1616 or. Log in to Sada webpage. After having the required ringtone code, send an SMS to 1616 containing the code. To cancel and remove the ring tone from your library, send an SMS containing the ...Video Ring Back Tone(RBT) is accessible when making a voice or video call over VoLTE network. A short video is played on the caller’s mobile phone before the call is answered. Since 2016, Huawei, in partnership with China Mobile, has done a lot of innovative work for Video Ring Back Tone(RBT) and has also released relevant service …Dec 22, 2023 · To change your ringback tone on your Samsung phone, follow these simple steps: 1. Open the settings menu on your phone. 2. Scroll down and tap on “Sounds and Vibration” or a similar option. 3. Look for the “Ringtone” or “Phone ringtone” option and select it. 4. You will see a list of available ringback tones. There are two parts; a Ring Back Tones Store and a Music Store. What does CRBT or RBT Mean? CRBT means Caller Ring Back Tone (or RBT) it is the sound you hear when you call someone before they answer. Typically these are …CRBT is a service for a user to customize a ring tone so that the CRBT system plays a piece of sweet music or a greeting for the calling user to replace the ordinary ring back tone. It is a basic service in the communication value-added service realm. CRBT brings rich and colorful service experience to users and lucrative benefits to operators. It is the …Sep 1, 2020 · Verizon customers can no longer subscribe or purchase ringback tones. As of Aug. 26, Verizon customers will no longer be able to subscribe to the phone company's ringback tone program, or purchase any of their 2,400 ringback tones, according to Verizon. On Oct. 31, the program will officially cease to exist, discontinuing current ringback tone ... I have a FreePBX 13 server set up with a SIP Trunk connection, however for some reason we are not getting the ring back tone for calls going out of the trunk connection. I was able to implement a work around for this by placing the "Tr" options under "Asterisk Trunk Dial Options" to force Asterisk to produce the ring back tone for …Verizon ringtones. One of the easiest ways to get ringtones on an Android phone is to download the Verizon Tones app from the Google Play™ store. From the app, you can purchase and download from a broad selection of great ringtones. You’ll also be able to set specific ringtones for certain contacts and set up a ringback tone that plays for ...All right, something worked, not exactly the ring back tone, I can hear now the Music on Hold. These are my Call Handlers: Operator-Greeting. Operator-Transfer. The call comes to Operator Greeting, if the person enters the extension number they want to reach it does so, still dont hear the ring back nor mohYou are still hearing a ring back tone because the ITSP is providing session progress. The 183 message is used by the called gateway to provide media to the calling gateway prior to the call being completed. This media can be used to play anouncements, ringback or music to the calling gateway prior to the call actually being completed.Ringback tones (RBT) are actually a throwback to circuit-switched phone networks such as PSTN (Public Switched Telephony Network) ( abbreviations explained …In this episode, Chad talks about banjo tone rings. Learn what the differences are between all of them.For any questions or if you need any banjo related hel...Call Ring-back Tone (called Coloring) When someone calls you from a mobile phone or a general phone to a mobile phone user, this colorful service lets the caller hear various distinctive sounds, newest songs, sound effects and voices instead of the ring back tone (dial tone). This supplementary service enables the person calling you to wait ... A ringback tone is the typical signal a caller hears through the telephone speaker while waiting for a call to be answered. It is also referred to as call control signal. Because these signals (ringback tones) are country-specific, TeleForwarding’s system enables authentic ringback tones, even if the call is forwarded to another country. Telkomsel, misalnya, merupakan salah satu provider yang meluncurkan Ring Back Tone di Indonesia dengan nama layanan Nada Sambung Pribadi (NSP) 1212. Fitur ini berisikan lagu-lagu yang sedang hits ataupun tembang-tembang lawas baik lokal maupun internasional, yang dapat dinikmati apabila pelanggan mengaktifkan RBTnya.What's CRBT. First from MTC, the call ring back tone (CRBT) service allows you to personalize your incoming calls by selecting music. Rather than hearing a ringing tone until you answer a call, your friends, family and colleagues will hear your song selection. Choose from local to International hits, whacky sounds to pure instrumental and more.Jul 22, 2014. #1. Hello. I cis questions about the generation of Ring Back Tone. I am using the 3CX server on the remote environment, but I am in trouble Ring Back Tone is inaudible. Environment are as follows. OS: Windows2012Server, firewall is off. Terminal: 3cx client, Yealink fixed telephone. Line: VOIP trunk, IP phones line of Japan.How to change a ring back tone for the country your Switchvox is located in. Number of Views 649. How to change ring back tone. Number of Views 1.06K. How do I fix issues with ringback with FreePBX and Digium Digital card. Number of Views 1.26K. How to configure a Digium E1 PRI card.Ingin mengganti ke layanan RBT (Ring Back Tone) yang lebih baru dan lebih fleksibel. Cara Mematikan NSP Telkomsel. Ada beberapa cara untuk mematikan NSP Telkomsel, di antaranya melalui SMS, telepon, dan aplikasi MyTelkomsel. Melalui SMS. Untuk mematikan NSP Telkomsel melalui SMS, ikuti langkah-langkah berikut: Buka …With a Ring Back Tone, the phone user selects a song instead of the standard ringtone for his/her callers to hear before the phone is answered. 3. Is Ring Back Tone service available to all Digicel customers? The Ring Back Tone service is a network feature and is compatible with all Digicel phones. 4.Ringback Tone. Nice Tone. Spacy Ringback. Ncell. Htc Ringback Tones. Standardringtone. Ringback funny. Leave a message. Yahoo Ringback Tone. Country …Comviva, the global leader in providing mobility solutions, today announced that its caller ring back tone (CRBT) Platform is powering one billion caller tunes in India every-day, constituting 86 percent of all the CRBT traffic originating in the region. Globally, the company is powering personalized music ring back tone for 224 million mobile ...A ringback tone is the music or sound that someone hears when they call your phone, before you answer the call. It’s a great way to add some personality and flair to your phone, and show off your favorite songs or artists. In this article, we’ll explore what ringback tones are, how they work, and why you should consider getting one. Promote new songs, friends activity, special occasion’s tones, like world cup or sponsored, with Seasonal or Evergreen Campaigns, on certain dates and on special occasions, directly to the users’ phone with an easy to use, wizard based, campaign management tool. (e.g. Find the No1 song of the day you were born and let those calling you hear ... When setting up a new call the following shows up in our syslog and we hear a RingBack tone. As you can see there is only one 180 Ringing going back to Vodafone. /. Direct Routing microsoft teams audiocodes. Blogging about Microsoft Teams, Skype for Business, Lync Server 2013, Office365, Azure, Audiocodes, Information Security, … Ncell. Htc Ringback Tones. Standardringtone. Ringback funny. Leave a message. Yahoo Ringback Tone. Country boy. Grandma Ringback. Oceans. Head over heels. Leave A Message. Search free ringback Ringtones on Zedge and personalize your phone to suit you. Start your search now and free your phone. Sep 1, 2020 · Customers were able to have a standard ringback tone or customized tones for different callers based on the caller ID, group list, or time of day, the company said at the time. After several years ... CRBT (Caller Ring Back Tone) CRBT. CRBT service is a high value-added service in the mobile telecom market and it plays various sound contents such as music, voice-to-calling party instead of traditional RBT until called party picks up the call. Users can personalize CRBT content in various ways to express their identity and content providers ...リングバックトーン ‐ 通信用語の基礎知識. 発呼者に回線交換作業が終了し、被呼者を呼び出し中であることを知らせるための音。 「呼び出し音」ともいう。 業界では略称 …2nd Generation. $59.99 $99.99. Take up to 12 months to pay with no interest and no late fees. Prequalify now. $112.99 Save $4.99. $124.99 Save $9.99. $99.99 Save $80. $229.99 Save $80. See, hear, and speak to visitors from anywhere with Ring's best-selling Video …Keep in Mind "Ringback" for SIP trunks is sort of faked, since the protocol has no means to deliver it via signaling, we need to reconnect the audio stream to the ANN to emulate a ringback tone on the audio plane. Any Region restriction, or not having all codecs enabled for the IPVMSA service might cause a condition like the one you are …The SKIZA Ads Reverse Ring Back Tone Service is provided by Adtones Limited a Company registered under UK Law, Company No. 9515191, based in 35A South Street London W1K 2XF United Kingdom (hereinafter “We”), in partnership with Safaricom PLC. The Service will run on the Safaricom PLC’s network. It is a Service in which an … เสียงรอสาย (อังกฤษ: ringback tone, RBT) เป็นการบ่งชี้ด้วยเสียงที่ต้นทางจะได้ยินบนเครื่องโทรศัพท์ หลังจากต้นทางได้กดเลขหมาย และก่อนที่ปลายทางจะรับสาย ... Robi GoonGoon is a Caller Ring Back Tone service that allows you to set a song, tone, music, funny messages or sounds as a Ring-Back Tone for your callers. ... The fall back charging in case of you are having low balance will be applicable as mentioned on the charging section above. Ringback Tones and Verizon Tones Discontinued. The Ringback Tones service has been discontinued and is no longer supported by Verizon. If you had a subscription to Ringback Tones and Ringback Tones that you purchased from the Media Store or Verizon Tones app, they were automatically removed from all lines on your account. When the called party’s phone begins to ring, it sends back an 18x Ringing response. The 18x Ringing message may or may not include the Session Description Protocol (SDP) which is used to set up a one-way media stream for conveying RTP media packets with a ringback tone to the caller. PortaSwitch analyzes the 18x Ringing message received.A New Broadcast Medium. Advertising Ring Back Tones (A-Tones) is a new broadcast medium that enables marketers to run short adverts on mobile phones. A-Tones are 6-12 second audio files superimposed over the standard ring back tone of the called party. Everyday billions of seconds of broadcast space is going to waste globally... Promote new songs, friends activity, special occasion’s tones, like world cup or sponsored, with Seasonal or Evergreen Campaigns, on certain dates and on special occasions, directly to the users’ phone with an easy to use, wizard based, campaign management tool. (e.g. Find the No1 song of the day you were born and let those calling you hear ... Subscribe Now:http://www.youtube.com/subscription_center?add_user=ehowtechWatch More:http://www.youtube.com/ehowtechPutting ringback tones on iPhone from iTu...Jun 18, 2014 · Here we aren't taking about ringback tone , the call is in answered state. If you look at the cucm traces you will get to know how call was answered and moh was played. Here is the time line from the traces... 14:10:44.570 - INVITE sent to CUCM by VG 14:10:44.590 - INVITE relayed to CUC 14:10:44.607 -Received ringing and sent back ringing to VG

1.7K views, 121 likes, 3 loves, 3 comments, 6 shares, Facebook Watch Videos from stc Bahrain: This Eid, add up to 5 Ring Back Tones in a single shuffle... 1.7K views, 121 likes, 3 loves, 3 comments, 6 shares, Facebook Watch Videos from stc Bahrain: This Eid, add up to 5 Ring Back Tones in a single shuffle playlist and greet all those who call you with.... Miro board

ring back tone

Ringback Tones and Verizon Tones Discontinued. The Ringback Tones service has been discontinued and is no longer supported by Verizon. If you had a subscription to Ringback Tones and Ringback Tones that you purchased from the Media Store or Verizon Tones app, they were automatically removed from all lines on your account. Short answer: very likely. Countries often do not use the same sound frequency and cadence for the sounds we hear when dialing a phone number: ringback tone, busy tone, and so on. The International Telecommunication Union publishes a PDF document describing ringing tones used by national networks across the world.Jun 22, 2017 · Ringback tones are still a thing. Ringback tone sales grew quickly in the early 2000's, holding strong until 2008, when sales plummeted dramatically as cell phone users began taking advantage of ... But when a caller calls you while waiting for you to pick up their call, you hear a song or musical tone. This sound you hear while the recovery picks up the call is …There are different types of tone rings and the three most common styles for Old Time open back banjos were all originally developed over 100 years ago. Today, different manufacturers will make their own version of each type of tone ring, but all include the same basic design features. The three most common style tone rings for Old Timey …Activate Online. IVR : Dial 387. USSD : Dial #107# -> Press 92 -> Press 9 -> Press 1 -> Press1. To deactivate : SMS OFF Ring to 678. To Download a ringing tone of your choice. - Call 387. - Use the Star Copy service by pressing the ‘*’ & 9 keys on your mobile if you wish to copy the RingIN Tone you hear. Both subscribers and non-subscribers ...Advertising ring back tones momentum. By The Mobile Indian Network. January 11, 2011. On average, there is a 15-second wait time before a call is answered. In these 15 seconds, the caller is a ... Step 2. Send a text message to number "728" and in the message type either "RBT", "List" or enter the 3 digit code for the Ringback Tone you would like to purchase which can be found on the official Ringback tone website listed at the bottom of this page. You can then demo songs and purchase them right from your phone. Skiza tune is a customized ring-back service by Safaricom which enables you to entertain your callers with your favorite sound or music tunes at a cost. Skiza started in the year 2009, and by 2017 the platform had seen 132,000 tunes downloaded where 120,000 are from Kenya. The numbers continue to rise as more Kenyans customise their …The Platform. Ring Back Tones Platform is an end-to-end solution for RBT service, including all the core components responsible for music playing, billing, provisioning, subscription management, all the sales & self-care channels (IVR, SMS, WAP, WEB Responsive, App and USSD) and supporting tools like monitoring, customer care or …In response to Alonzo Gutierrez Vadillo. Options. 09-24-2014 11:24 AM. You received 183 session progress with SDP and it indicates that the ringback tone is sent by your provider. Also there is always an interoperability issue when you have H323 between CUCM&GW and SIP to Provider.Comviva’s caller ring-back tone (CRBT) facility is an end-to-end solution that supports a gamut of activities, from customer acquisition to subscription management. The facility facilitates customer segmentation by identifying usage patterns to help promote appropriate content to customers. The facility enables assured service management ...A caller ringback tone (RBT) is the sound a caller hears while waiting for a phone to be answered. Advertisements. In North America, a standard caller RBT is …How to change a ring back tone for the country your Switchvox is located in. Number of Views 649. How to change ring back tone. Number of Views 1.06K. How do I fix issues with ringback with FreePBX and Digium Digital card. Number of Views 1.26K. How to configure a Digium E1 PRI card.The government of India has ordered the country’s telecoms operators to play a 30-second audio clip about coronavirus in place of a ringing tone in order to raise awareness of the pandemic. India’s Department of Telecom implemented the order following a request from the country’s Ministry of Health and Family Welfare.to use LM567 tone detecting IC's. The tones are dual tones that are switched. on-off at a determined rate. You could AND gate two 567 outputs, and time. the pulses. to detect a valid signal. IE: "Precise" busy signal is 480HZ and 620 HZ. @ -24dBmo. per tone interupted 0.5 sec on, 0.5 sec off.A local ringback tone is the signal tone that is heard by callers while the destination’s phone is ringing. Ringback tones can be customized. USA: +1 (561) 908-6171 • APAC: +66 (60) 002-4172 ... Reach out and a Global Call Forwarding expert will get back with you shortly. Contact Us. Hollywood sound effects for TV, film, ads and video games. Make sure your spelling is correct. Otherwise, try browsing our categories below. Free ringback sound effects. Download royalty-free ringback sounds from our library of 450000+ SFX for TV, film and video games. 呼出音 (よびだしおん) [1] [注 1] または リングバックトーン ( ringback tone, RBT)とは、 電話 を掛けた際に相手を呼び出しているときに 電話交換機 から発呼側に送られ ….

Popular Topics