of VoIP Howto
This document explains about VoIP systems. Recent happenings like Internet diffusion at low cost, new integration of dedicated voice compression processors, have changed common user requirements allowing VoIP standards to diffuse. This howto tries to define some basic lines of VoIP architecture. Many years ago we discovered that sending a signal to a remote destination could have be done also in a digital fashion: before sending it we have to digitalize it with an ADC, transmit it, and at the end transform it again in analog format with DAC (digital to analog converter) to use it. VoIP works like that, digitalizing voice in data packets, sending them and reconverting them in voice at destination. Digital format can be better controlled: we can compress it, route it, convert it to a new better format, and so on; also we saw that digital signal is more noise tolerant than the analog one .
Many businesses are turning to Voice over IP (VoIP) to save money on infrastructure and communications costs, but just ripping out your existing phone system and replacing it with VoIP will not work. VoIP systems require IP phones or analog telephone adapters to allow your existing phones to work. If equipment costs are stopping you from experimenting with VoIP, softphones can provide an inexpensive way for businesses to get up and running with VoIP, as I recently discovered by putting Kiax, Linphone, Twinkle, and CounterPath's X-Lite to the test.
- Linux LiveCD VoIP Server
The Linux LiveCD VoIP Server can be used to provide a Vonage type service, or to create a voip pbx for a campus or business with up to thousands of SIP phones. It is based on the Open Standard SIP Express Router (SER) and Asterisk. It can serve as a SIP Proxy, VoIP PBX, VoIP gateway or Class 5 Softswitch. * Easy Web user administration and real-time accounting. * All in one solution to VoIP and SIP enable your business. * Allows you to make your own SIP numbering plan. Centrex service. * Can be connected to multiple A-Z wholesale termination providers and to your own PSTN termination gateway/router. * Can do Least Cost Routing * Includes nat traversal, stun server, media server for conference call bridge, voicemail to email, incomming virtual numbers (DIDs), follow me forwarding.
- VOIP Linux and Asterisk
There are some Crossover Into Voice Over Internet Protocol are follow here:-
* VOIP crosses over between the Internet and the PSTN at several possible locations
* Intraoffice ? VOIP phones on the desktop
* Direct Inward Dial ? A phone number people can call
* Termination ? Calling local or long distance numbers.
- Open Source VoIP Client for Linux windows
Voice over IP tends to be part of more and more corporate networks today. As Open Source Software become more and more popular in companies, we decided to provide the community with a new powerful and open platform for desktop-based Voice over IP. SFLphone aims to become your desktop's VoIP companion. The current SFLphone developers and contributors are follow here:- * Yan Morin, main programmer of SFLphoned and maintener ;
* Jérôme Oufella, misc. code, software design and bugfixes.
* Julien Plissonneau Duquene, programmer and maintener
- VoIP and Embedded Linux
Aplio offers an alternative to MS-Windows-based long-distance telephone calls on the Internet. Under the hood, you will find embedded Linux. Telecommunications is a huge market that continues to grow at a frightening pace. As the market becomes more sophisticated, the need for intelligent devices grows as well. A relatively new piece of the telecommunications market is voice over ID, or VoIP. This is where speech is digitized and sent over an IP-based network. The most common products in this market combine an MS-Windows PC and sound card with proprietary software to offer the equivalent of free long-distance telephone calls by using the Internet.
- IBM Partner on Linux Based VoIP
Verso Technologies has said that the company and IBM have executed a strategic teaming agreement to offer the Verso MetroNet VoIP Overlay solution on the IBM eServer? BladeCenter platform. The joint offering creates a Linux-based VoIP solution running on the IBM eServer BladeCenter and will be globally positioned and marketed by both companies. The Verso and IBM solution will target providers in the Tier-2 through Tier-4 markets that require deployment of an open standards, cost-effective next generation network (NGN) softswitch platform. The solution integrates and packages a standard set of features and capabilities which includes the Verso Clarent endpoint and tandem switching technologies as well as other core capabilities and services.
- Open source VoIP on Linux
Zultys Technologies, a designer and manufacturer of hardware and software products for integrating telecom and data communications, last month introduced its free and downloadable "Linux soft phone," alias LIPZ4, to attract more Internet telephony fans to the advantages of using soft phones in business. For three years, Zultys has been growing technology choices for a market that it believes is going to grow and grow. But while the computer phone brings added flexibilities to communicating, some kinks await resolution. Zultys hopes to get potential soft-phone users under the LIPZ4 tent long enough to look around and become familiar with all that Zultys can provide in telephony servers and phones. LIPZ4 will lower the barriers for companies, too, to explore VoIP technology to see what soft phones on Linux can do.