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Topic: IP telephony

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	Amazon.com: IP Telephony Unveiled: Books: Kevin Brown (Site not responding. Last check: 2007-09-10)
		IP Telephony Unveiled uncovers the value behind this technology, which helps you see past what might appear to be only a new telephone system, to understand the strategic enabler laying dormant in many companies' networks.
		IP Telephony is a comcept (and very well done) to make a phone into a full blown utility capable of doing whatever it is you need.
		IP Telephony Unveiled by Kevin Brown (Cisco Press, 2004) provides some interesting history of the convergence of voice and data, and points out how early efforts in this area were focused on the PBX; it turned out this was not a good place to converge because the links were inadequate for ever-increasing data traffic.
	www.amazon.com /IP-Telephony-Unveiled-Kevin-Brown/dp/1587200759 (4018 words)

	IP Telephony Solutions (Site not responding. Last check: 2007-09-10)
		IP Telephony, also known as Voice-over-Internet Protocol telephony, or more simply VoIP, is a term describing a set of facilities for managing the delivery of voice information using the Internet Protocol (IP).
		IP Telephony allows voice traffic to be transported across an IP-based data network, for example a local area network (LAN) or the internet.
		IP also puts companies in a better position to take advantage of future developments in terms of new channels because once an IP 'skeleton' is in place, functionality is just a question of what software is developed.
	www.istart.co.nz /index/HM20/PC0/PV25578 (923 words)

	What is IP telephony? - a definition from Whatis.com
		- IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN).
		IP telephony service providers include or soon will include local telephone companies, long distance providers such as AT&T, cable TV companies, Internet service providers (ISPs), and fixed service wireless operators.
		IP telephony is an important part of the convergence of computers, telephones, and television into a single integrated information environment.
	searchvoip.techtarget.com /sDefinition/0,,sid66_gci212388,00.html (332 words)

	IP Telephony Annotated Bibliography (Site not responding. Last check: 2007-09-10)
		IP and ATM are considered as packet switching technology for carrying compressed voice and both are compared to circuit switching.
		IP Telephony support is expected to increase cost of a cable modem by 20-30%, adding a battery pack an additional 40-50$.
		Hence IP telephony can be used to bypass tariffs for long distance access (although economics tend to favor using IP telephony to bypass the local loop, as mentioned in "Cable IP Telephony Primer").
	www.cs.berkeley.edu /~mccaesar/research/iptel_litsurv.html (16289 words)

	IP Telephony
		IP telephony, or voice over IP, means that voice and fax calls are transmitted over an IP network such as the Internet, rather than over the familiar public switched telephone network (PSTN).
		IP telephony equipment consist of new network elements that need to be integrated into the corporate, and teleoperator's or service provider's network.
		IP telephony can be used in three basic situations: IP terminal to IP terminal, IP terminal to external phone (and vice versa), and phone to phone.
	users.tkk.fi /~lhuovine/study/iwork99/voip.html (11061 words)

	ProCurve Networking by HP - IP Telephony Solution White Paper
		IP telephony allows organizations to simplify and streamline their communication systems.
		IP telephony serves as a strategic enabler for cost savings and other factors that allow businesses to gain a competitive edge.
		IP telephony makes it possible to reduce administrative and management complexity and expense, lower overall network infrastructure costs, and cut the price of application integration.
	www.hp.com /rnd/pdf_html/IP_telephony_whitepaper.htm (2826 words)

	Intel(R) White Papers - IP Telephony Basics (Site not responding. Last check: 2007-09-10)
		IP telephony uses the Internet to send audio between two or more computer users in real time, so the users can converse.
		By bridging the traditional circuit-switched telephony world with the Internet, gateways offer the advantages of IP telephony to the most common, cheapest, most mobile, and easiest-to-use terminal in the world: the standard telephone.
		IP telephony gateways, then, must detect DTMF digits locally, suppress their transmission, then generate them on the remote side.
	www.intel.com /network/csp/resources/white_papers/4070web.htm (1472 words)

	Nortel Networks: Customer Solutions - IP Telephony - 5 Steps to IP Telephony Success
		IP telephony has proven to be a wise decision for many companies.
		Examine the strategic and operational benefits that IP telephony can bring to your organization.
		There are multiple paths to IP telephony success.
	www.nortel.com /solutions/iptelephony/5steps/index.html (264 words)

	3Com \| 3Com Convergence Applications Resources IP Telephony, Messaging, and Conferencing
		While most organizations are ready to experience the benefits of Voice over IP technology, their networks may not be ready to deliver its advantages.
		Understand the various approaches to deploying IP telephony, how voice traffic differs from data, and the tests that are available to prevent unexpected costs and post-installation issues.
		IP telephony and an emerging suite of convergence applications can uniquely deliver outstanding reliability, productivity, and lower costs.
	www.3com.com /voip/whitepapers.html (1218 words)

	ProCurve Networking by HP - IP Telephony Solution Technical Brief
		To support an IP telephony solution, the enterprise network must be a multi-service network—a network on which voice, video, and data can coexist over a single IP-based infrastructure.
		IP telephony deployments typically use a variety of trunks to provide PSTN connections for local calls, to ensure resiliency in the event of a WAN failure, and to provide a migration path with a legacy PBX to allow staged VoIP deployments.
		An IP telephony solution built upon the ProCurve Networking by HP Adaptive EDGE Architecture and the Mitel 3300 ICP provides for resiliency throughout the network, eliminating the risk of a single point of failure.
	www.hp.com /rnd/pdf_html/IP_telephony_tech_brief.htm (2991 words)

	Howstuffworks "How VoIP Works"
		IP phones connect directly to your router and have all the hardware and software necessary right onboard to handle the IP call.
		IP telephony just makes sense, in terms of both economics and infrastructure requirements.
		Since the IP phones or ATAs broadcast their info over the Internet, they can be administered by the provider anywhere there is a connection.
	computer.howstuffworks.com /ip-telephony.htm (1188 words)

	A-Tel Communications: IP Telephony
		Network-based telephony using VoIP — voice over Internet Protocol (IP) — is where the future of telephony lies.
		IP systems, offered by both Axxess and ESI, are advanced, network-based business phone systems that combine the best of both the telephony and data worlds.
		Ultra-high-speed packetized voice communication — IP telephony systems can can work with either 10Base-T or the much faster 100Base-T, or in a combined 10/100Base-T network.
	www.a-telcom.com /ip_telephony.htm (253 words)

	IP Telephony
		Specializing in IP Telephony, Eicon Networks, a global leader in providing world class products and technologies for media processing, offers a full line of communications solutions for the Enterprise.
		We serve the IP telephony needs of customers in more than 80 countries.
		IP PBX, IP Telephone Market on the Rise for Western Europe
	www.tmcnet.com /channels/ip-telephony (403 words)

	IP Telephony
		By IP enabling your telephone system to carry voice traffic over your existing data network, you are able to make maximum use of your existing data network infrastructure.
		The Toshiba IP Voice Gateway is a self-contained communications gateway device that enables organizations to route both voice and fax communications over a TCP/IP network.
		The IP Voice Gateway (BVPU) is a printed circuit board that inserts into a universal slot in a Strata CTX or DK system.
	www.toshiba-phones.com /IP_Telephony.htm (1664 words)

	Brooktrout White Paper: Understanding Latency in IP Telephony
		With an increasing interest in implementing and deploying IP Telephony applications, there is a rising need to understand the cause and effect of latency in the deployed system.
		Some of the latency is incurred in the IP Telephony Gateways at either end, and the remainder is incurred by the IP network that connects the two gateways.
		Since most high-density IP Telephony gateway systems will process multiple channels of voice on each DSP, calculating the latency induced by processing the coding or decoding of the speech is rather complex.
	www.telephonyworld.com /training/brooktrout/iptel_latency_wp.html (3291 words)

	IP Telephony and VoIP solutions for enterprise by Alcatel-Lucent
		IP Telephony is the combination of voice, data, video and wireless applications into an integrated enterprise infrastructure that offers the reliability, interoperability, and security of a voice network, the benefit of IP, and the efficiencies, mobility and the manageability of a single network.
		To benefit from IP Telephony and Voice over IP (VoIP) technology, Alcatel-Lucent offers enterprises solutions that combine traditional voice communications with the latest IP technologies, along with a broad range of business and wireless phones.
		The Alcatel-Lucent IP Touch phones complement the Alcatel-Lucent range of professional terminals, providing a high-end IP telephony solution in addition of the existing e-Reflexes range of IP Phones.
	www1.alcatel-lucent.com /enterprise/en/products/ip_telephony/index.html (186 words)

	Breaking through IP telephony - Network World
		But it strongly depends on whose IP PBX you use and more importantly, whether you're willing to spend the dollars and the time it takes in terms of network security planning, network and personnel resources, and extra security gear.
		After setup, IP telephony and Layer 2/Layer 3 data networking could not be functionally limited because of security settings, including normal IP phone calling out to/from the PSTN.
		Via an “office-cube” IP phone, which the assailant is authorized to use, including the “data switch port” on the back of the phone, for a desktop or laptop.
	www.networkworld.com /reviews/2004/0524voipsecurity.html (2091 words)

	Cisco Enhances IP Phone Security - News - Network Computing (Site not responding. Last check: 2007-09-10)
		The new version of Cisco's IP telephony system provides voice media and signaling encryption for new and currently installed 7940G and 7960G IP telephones.
		IP voice connections will now be encrypted from the phones themselves.
		The new media encryption features will shield IP voice conversations from eavesdropping, while signal encryption protects against tampering with the signaling packets, such as hacker denial of service attacks.
	www.networkcomputing.com /channels/networkinfrastructure/51200509 (354 words)

	IP Telephony Services By Epsolon - Houston Computer Networks Solution Provider
		Rather than using dedicated equipment, IP Telephony will use much of the same infrastructure as a data network.
		IP telephones work just like regular phones, only they have individual IP addresses and connect to a standard data network instead of a proprietary PBX.
		Epsolon’s IP engineers have been providing highly-reliable, fault-tolerant IP telephony solution to the existing client base.
	www.epsolon.com /telephony.asp (127 words)

	Open Directory - Computers: Internet: Telephony
		IP Telephony Literature Survey - A literature survey covering architectural, protocol, and quality requirements for deploying an IP Telephony service.
		Voice over IP and IP Telephony References - A directory of talks, papers, books, organizations, vendors, standards, web pages, and standards on IP telephony.
		Internet Telephony: America Is Waiting - FCC Chairman Kennard's remarks before the Voice Over Net Conference; Atlanta, Georgia; September 12, 2000.
	dmoz.org /Computers/Internet/Telephony (306 words)

	Nortel: Solutions : IP Telephony: Overview
		Nortel's portfolio of telephony and converged IP telephony solutions deliver seamless, scalable real-time business communications with unprecedented flexibility in telephony applications deployment to meet our customer's environment, expectations, timetable and budget.
		Communication Server 2100 (CS 2100) is the first carrier-grade, IP softswitch for large campus and geographically dispersed large enterprises.
		The CS 2100 is scalable from 5,000 to 200,000 ports and supports both a pure IP configuration (with no TDM components) as well as a hybrid (both IP and TDM components).
	www.nortel.com /solutions/iptelephony (510 words)

	PowerDsine - Solutions - IP Telephony (Site not responding. Last check: 2007-09-10)
		The IP Telephony market will find great added value in having power available wherever there is a LAN connection.
		This capability increases IP telephony service reliability by ensuring that IP phones keep working in the event of power failures.
		To learn more about the PowerDsine certification program for IP Telephony devices, click here.
	www.powerdsine.com /Solutions/IPTelephony.asp (266 words)

	Voice over IP - Wikipedia, the free encyclopedia
		Protocols which are used to carry voice signals over the IP network are commonly referred to as Voice over IP or VoIP protocols.
		The receiving node must restructure IP packets that may be out of order, delayed or missing, while ensuring that the audio stream maintains a proper time consistency.
		Where IP packets are lost or delayed at any point in the network between VoIP users, there will be a momentary drop-out of voice.
	en.wikipedia.org /wiki/Internet_telephony (4675 words)

	IP Telephony Condensed (Site not responding. Last check: 2007-09-10)
		have teamed up to develop a comprehensive IP Telephony educational program designed to address the informational needs of the IT and business community.
		An IP Telephony student should have previous networking experience.
		These classes based on their schedule are designed for the busy IT professional who wants to learn IP Telephony quickly without having to spend excessive time learning various concepts.
	depts.inverhills.edu /cect/IT/IT.iptelephony_condensed.htm (478 words)

	Cisco IP Telephony - $48.00 (Site not responding. Last check: 2007-09-10)
		Cisco IP Telephony is based on the successful CIPT training class taught by the author and other Cisco-certified training partners.
		This book provides networking professionals with the fundamentals to implement a Cisco AVVID IP Telephony solution that can be run over a data network, therefore reducing costs associated with running separate data and telephone networks.
		David is experienced in design and implementation of IP telephony systems and has been instructing students for six years, two of which have been focused solely on IP telephony.
	www.ciscopress.com /title/1587050501 (451 words)

	IP Telephony - Cisco Systems
		IP telephony provides a way for you to extend consistent communication services to all your employees, whether they are in main campus locations, at branch offices, or working remotely.
		IP telephony transmits voice communications over a network using open-standards-based Internet Protocol.
		Cisco IP telephony products are a key component of the Cisco Unified Communications system, which delivers the business benefits of a converged network to organizations of all sizes.
	www.cisco.com /en/US/products/ps6788/Products_Sub_Category_Home.html (254 words)

	What is Internet telephony? - A Word Definition From the Webopedia Computer Dictionary
		To date, however, Internet telephony does not offer the same quality of telephone service as direct telephone connections.
		Citrix Application Gateway: IP Telephony Application Access - Access that is secure and simple for users and adaptable to almost any access situation.
		The mission of this group is to educate consumers and the media by monitoring and supporting present and newly developed telephony, video, and audio technologies that are specifically designed and manufactured for the Internet community.
	www.webopedia.com /TERM/I/Internet_telephony.html (530 words)

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