VOIP

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This document discusses VoIP (Voice over Internet Protocol) technology, including its challenges and applications. It covers topics like reliability issues, quality of service, fax transmission, emergency call handling, security concerns, case studies, and the VoIP market. Solutions proposed include improving network infrastructure, prioritizing emergency calls, encrypting VoIP traffic, and segmenting voice and data networks. The VoIP market is projected to grow significantly due to lower costs and the emergence of new communication services.

Product development course G01 Presented to: Dr. Raafat El Fouly

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Internet protocol (VoIP) is the technology of digitizing sound, compressing it, breaking it up into data packets, and sending it over an IP network.The conventional technique used for sending voice is PSTN (public switched telephone network) . As data traffic has higher speed than telephone traffic, so what we do most of the time we prefer to send voice over data networks. Voice over internet protocol (VoIP) is a method of telephone communication over a data network.

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VoIP (Voice over Internet Protocol) transmits voice and multimedia content over an internet connection. VoIP allows users to make voice calls from a computer, smartphone, other mobile devices, special VoIP phones and WebRTC-enabled browsers. VoIP is a valuable technology for consumers and businesses, as it typically includes additional features that can't be found on standard phone services. These features include call recording, custom caller ID, and voicemail to e-mail. It is also helpful to organizations as a way to unify communications. The process works similarly to a regular phone, but VoIP uses an internet connection instead of a telephone company's wiring. VoIP is enabled by a group of technologies and methodologies to deliver voice communications over the internet, including enterprise local area networks or wide area networks. A VoIP service will convert a user's voice from audio signals to digital data and then send that data through the internet. If another user calls from a regular phone number, the signal is converted back to a telephone signal before reaching that user. VoIP can also route incoming and outgoing calls through existing telephone networks. However, some VoIP services may only work over a computer or VoIP phone.

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Voice over Internet Protocol (Voice over IP, VoIP and IP telephony) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).The steps and principals involved in originating VoIP telephone calls are similar to traditional digital telephony and involve signaling, channel setup, digitization of the analog voice signals, and encoding.

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Internet Telephony, often denoted as Voice-over-Internet-Protocol (VoIP), has gained more and more attention world-wide during the last decades. Voice over Internet Protocol (VoIP) technology has become a communication alternative with the continuous increasing of Internet bandwidth and rapid advancement of peer-to-peer (P2P) applications.In this paper three types of VOIP are explained: (i) PC to PC : this is the easiest way to use VOIP, which enables you to talk and communicate Voice over Internet with all people over the world. (ii) PC to Phone: which need a gateway that connects IP Network to phone Network. Its uses a device called an ATA (Analogue Telephone Adaptor).The ATA allows you to connect a standard phone to your computer or your Internet connection for use with VOIP. The ATA is an analogue to digital converter. (iii) Phone to Phone: Where you need more gateways that connect IP network to phone networks, more phone networks that connect Telephone set to gateway, and IP network that connect gateway to gateway. This paper also explains Internet Protocol (IP) that VOIP uses to transmit voice as packets over an IP network as follows: H.323 Protocols that provides the technical requirements for voice communication over LANs, while assuming that Quality of Service isn't provided by LANs. Session Initiation Protocol (SIP) standard which is the standard for establishing VOIP connections. This paper also explores Voice XML which is a markup language derived from XML for writing telephone-based speech applications.In this paper also VoiceXML developed environments(Gateways) are explained, where a list of all VoiceXML developers is included, and the most popular VoiceXML development environments (Gateways) are explained in details.Finally, in this paper ten VoiceXML applications are developed

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1. Product development course G01 Presented to: Dr. Raafat El Fouly

8. ATA Router Internet VoIP Service Provider Router Internet VoIP Service Provider

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