nsIRadioInterfaceLayer
dom/system/gonk/nsiradiointerfacelayer.idlscriptable used to implement the interface between the telephony api and the radio hardware in a telephone.
... 1.0 66 introduced gecko 12.0 inherits from: nsisupports last changed in gecko 14.0 (firefox 14.0 / thunderbird 14.0 / seamonkey 2.11) implemented by: @mozilla.org/telephony/system-worker-manager;1.
... to create an instance, use: var radiointerfacelayer = components.classes["@mozilla.org/telephony/system-worker-manager;1"] .getservice(components.interfaces.nsiinterfacerequestor) .createinstance(components.interfaces.nsiradiointerfacelayer); method overview void answercall(in unsigned long callindex); void deactivatedatacall(in domstring cid, in domstring reason); void dial(in domstring number); void enumeratecalls(in nsiriltelephonycallback callback); void getdatacalllist(); unsigned short getnumberofmessagesfortext(in domstring text); void hangup(in unsigned long callindex); void registercallback(in nsiriltelephonycallback callback); void registerdatacallcallback(in nsirildatacallback callback); void rejectcall(in unsigne...
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Index - MDN Web Docs Glossary: Definitions of Web-related terms
225 itu glossary, itu, standardization, organization the international telecommunication union (itu) is the organization authorized by the united nations to establish standards and rules for telecommunication, including telegraph, radio, telephony and the internet.
... 355 ril firefox os, glossary, infrastructure, intro, mobile, telephony ril (radio interface layer) is a mobile operating system component which communicates between the device's software and the device's phone, radio, or modem hardware.
...rtp is suitable for video-streaming application, telephony over ip like skype and conference technologies.
...it is also known as ip telephony, or broadband telephony.

Index - Web APIs
3220 rtcdtmfsender audio, dtmf, interface, media, pstn, rtcdtmfsender, reference, telephony, touch-tone, webrtc, webrtc api listen to these events using addeventlistener() or by assigning an event listener to the oneventname property of this interface.
... 3221 rtcdtmfsender.insertdtmf() api, dtmf, media, method, rtcdtmfsender, reference, telephony, touch-tone, webrtc, webrtc api, insertdtmf the insertdtmf() method on the rtcdtmfsender interface starts sending tones to the remote peer over the rtcpeerconnection.
... 3223 rtcdtmfsender.tonebuffer audio, dtmf, media, property, rtcdtmfsender, reference, telephony, touch-tone, webrtc, webrtc api, tonebuffer the rtcdtmfsender interface's tonebuffer property returns a string containing a list of the dtmf tones currently queued for sending to the remote peer over the rtcpeerconnection.

Web audio codec guide - Web media technologies
c name container support aac advanced audio coding mp4, adts, 3gp alac apple lossless audio codec mp4, quicktime (mov) amr adaptive multi-rate 3gp flac free lossless audio codec mp4, ogg, flac g.711 pulse code modulation (pcm) of voice frequencies rtp / webrtc g.722 7 khz audio coding within 64 kbps (for telephony/voip) rtp / webrtc mp3 mpeg-1 audio layer iii mp4, adts, mpeg1, 3gp opus opus webm, mp4, ogg vorbis vorbis webm, ogg [1] when mpeg-1 audio layer iii codec data is stored in an mpeg file, and there is no video track on the file, the file is typically referred to as an mp3 file, even though it's still an mpeg format file.
...it was standardized in 1999 as part of the 3gpp audio standard used for both gsm and umts cellular telephony, and uses a multi-rate narrowband algorithm to encode audio frequencies at a telephony-grade quality level at around 7.4 kbps.
... in addition to being used for real-time telephony, amr audio may be used for voicemail and other short audio recordings.

Mozilla Crypto FAQ - Archive of obsolete content
an earlier (circa 1995) collection of essays and public documents, with a concentration on the clipper chip controversy and the digital telephony act.

Gonk - MDN Web Docs Glossary: Definitions of Web-related terms
since firefox os has full control over gonk, we can expose interfaces to gecko that aren't accessible on other operating systems, for example the full telephony stack and display frame buffer.

ITU - MDN Web Docs Glossary: Definitions of Web-related terms
the international telecommunication union (itu) is the organization authorized by the united nations to establish standards and rules for telecommunication, including telegraph, radio, telephony and the internet.

RTP (Real-time Transport Protocol) and SRTP (Secure RTP) - MDN Web Docs Glossary: Definitions of Web-related terms
rtp is suitable for video-streaming application, telephony over ip like skype and conference technologies.

VoIP - MDN Web Docs Glossary: Definitions of Web-related terms
it is also known as ip telephony, or broadband telephony.

Phishing: a short definition
the ss7 telephony system is vulnerable, making eavesdropping, or rerouting text messages quite trivial.

Index
865 nsiradiointerfacelayer interfaces, mobile, xpcom api reference implemented by: @mozilla.org/telephony/system-worker-manager;1.

Using DTMF with WebRTC - Web APIs
if you'd like to know more about how this works, read rfc 3550: rtp: a transport protocol for real-time applications and rfc 4733: rtp payload for dtmf digits, telephony tones, and telephony signals.

WebRTC API - Web APIs
telephony these interfaces and events are related to interactivity with public-switched telephone networks (ptsns).

Digital audio concepts - Web media technologies
the most common sample rates are: 8000 hz the international g.711 standard for audio used in telephony uses a sample rate of 8000 hz (8 khz).