![]() ![]() Neben Applikationen für Telephonie und Video Conferencing, Instant Messaging und Presence ist auch Mobility ein herausragendes Anwendungsfeld. Dabei können alle möglichen Kommunikationsgeräte wie Telefone, Computer und PDA einbezogen werden und gleichzeitig ganz unterschiedliche Medien wie Sprache und Video zum Einsatz kommen. SIP extends the open-standards spirit of the Internet to messaging, enabling disparate computers, phones, televisions and software to communicate with each other.ĭas Session Initiation Protocol (SIP) ist ein Netzprotokoll zum Aufbau von Kommunikationsverbindungen aller Art. SIP users may locate and contact one another-regardless of media content or number of participants. In telephony this means that all communication is managed by the network, from a simple phone call through to voice-enriched eCommerce, web page click-to-dial and instant messaging. Like the Internet, SIP is easy to understand, extend and implement. Gradually, SIP is evolving from the prestigious protocols it resembles - the Web's Hyper Text Transfer Protocol (HTTP) formatting protocol and the Simple Mail Transfer Protocol (SMTP) email protocol - into a powerful emerging standard. Until the IETF's SIP standard was embraced, VoIP phone systems were in danger of proprietary vendor lock-in. ![]() ![]() Over the last couple of years, the Voice over IP community has adopted SIP as its protocol of choice for signalling and SIP is now a specification of the International Engineering Task Force ( IETF). The ability to establish these sessions means that a host of innovative services become possible, such as voice-enriched e-commerce, web page click-to-dial and Instant Messaging. A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session. Essentially, SIP is the future standard for communications of all kinds via a data network and its appeal lies largely in its simplicity: SIP sets up, handles and ends "sessions" over IP networks. This means that IP networks use the same rules that govern the World Wide Web, not those that govern standard circuit-switched PABX telephony. IP is based on internet protocols, not telephony protocols. At its basic level, IP is a set of rules that allows computer networks to communicate with other, with IP telephony building on these rules. Internet Protocol (IP) telephony differs from digital telephony in that it transmits digitised voice data via networks originally built for data transmission, not for voice transmission. Both digital systems and new connectivity media (fibre, satellite) extended the scope and reliability of telephony systems, such that very few analogue systems are still in use. Traditional telephone systems were originally based on the analogue system of physical connection via fixed cables and transmission via electrical pulses. In telecommunication, "telephony" encompasses the general use of equipment to provide voice communication over distances. ![]() 3 SIP relevant articles / SIP-relevante Artikel.See documentation for registering a SIP endpoint on Twilio. When a call comes in to Twilio to your phone number, Twilio will send it directly to your SIP registered endpoint. Using Twilio SIP Registration you can connect a call directly to a VoIP desk phone or soft phone. List the SIP configuration guides section of the docs to get step-by-step instructions. Your PBX can then route the call to an extension based on the number dialed. When a call comes in to Twilio to any of your phone numbers Twilio will send the call to your PBX over the SIP Trunk. You can connect a Twilio SIP Trunk to your PBX. There are 2 ways to get DID-like functionality with Twilio Phone Numbers, via a SIP trunk, and with SIP registration. A phone number that is used like this is often called a "DID" (and multiple numbers are called "DIDs”). Direct Inward Dialing (DID) is a telephone service that allows a phone number to ring through directly to a specific phone at a business instead of going to a menu or a queue and needing to dial an extension. ![]()
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