Jul 24, 20 vlans are for data security and have nothing to do with qos quality of service. Cisco provides a comprehensive line of affordable ip phones and. Combined with their unique pstn failover capabilities, this feature makes tenor switches the most survivable solution on the market. The switches provide advanced qos services that ensure highquality voice on the network. Khalil ahmed royal saudi naval forces riyadh, saudi arabia abstract ip telephony is a rapidly emerging technology for voice communication that has astonished both the datacommunication and telecom industries. Application notes for hp procurve switches connected to an. Cisco 300 series switches are available with up to 48 poe ports of fast ethernet or gigabit ethernet connectivity. Also the fact that it uses one network to transmit both voice and data takes. Ip telephony refers to the transfer of voice over the internet protocol ip of the tcpip protocol suite. Securing cisco ip telephony networks ebook by akhil behl. Drawing on ten years of experience, senior network consultant akhil behl offers a complete security framework for use in any cisco ip telephony environment. What is ip telephony security and why do you need it.
Vlans are for data security and have nothing to do with qos quality of service. We provide technical tutorials and configuration examples about tcpip networks with focus on cisco products and technologies. Ip telephony solution share common network components and similar enduser services but differ in where and how the callcontrol function is located, physically implemented, and managed. Voice over ip voip, the use of the packet switched internet for telephony, has grown substantially in the past ten years. Find answers to ip telephony and cisco switches from the expert community at experts exchange. Ip telephony provides traditional telephonic communication over an ipbased network, the internet via an internet service provider isp or directly from a telecommunications. Traditional telephone switches are not very cost effective as traffic routers. Figure 2 tipt interconnects two data interconnects located in melbourne and sydney for access to the tipt application server. A summary of these benefits from a technology view point include the following.
Iptelephony costs much less then circuitswitched network, in general, because in some cases it uses an already existing network which is underutilized and the cost for setting up a packetswitched network is less than the cost to set up a circuitswitched network. This blog is not affiliated or endorsed by cisco systems inc. Securing voip has many challenges that do not exist in the public switched telephone network pstn, a circuit switched system. Cisco cucme or cube enabled routers for telephony call control. This blog entails my own thoughts and ideas, which may not represent the thoughts of cisco systems inc. An ip telephone is a telephone device that transports voice over a network using data packets instead of circuit switched connections over voice only networks. Ip telephony applications are used for enhancing the ip telephony product offering. Technical developments over last few years have made the use of ip networks for. Ip telephony is one of the core motivations for deploying. Arrange for this essential service through an avaya account team. Deploy and maintain one network, lowering monthly expense and overall tco through a common architecture upgrades, spares, etc open standardsbased allows longterm flexibility and interoperability with 3rd party applications scalability and high availability.
Cisco small business ip phones and switches guide more and more small businesses are turning to voice over ip. So for all ip telephony administrators, this is a no. Ip telephony internet protocol telephony is a general term for the technologies that use the internet protocol s packetswitched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuitswitched connections of the public switched telephone network. Gigabit switches provide a network your business can grow on. It is not necessary to have an ip phone or camera to successfully complete the lab. This list of telephone switches is a compilation of telephone switches used in the public switched telephone network pstn or in large enterprises. Purpose this document serves as an implementation guide for cisco avvid architecture for voice, video and integrated data networks based on cisco. The endpoint knows the ip address of the gatekeeper by manual configuration. Ip telephony enabled lan switches supporting vlans, ieee8021. Cable two cisco ip phones to a switch switch module. Technology and standards 72 iepsac journal 20042005 voice over ip voip.
Deploying ip telephony with ex series ethernet switches. The ohio state university raj jain 3 market q international voip calls could cost 15th of normal rates. The most famous of internetworks is the internet with the rules for communication being defined by the internet protocol ip. The switch will automatically set up a voice vlan and tag the traffic accordingly, without requiring specific manual configuration on the ip phones.
In event of an ip failure, the new survivable tenor s keeps the local ip telephony phone network operational, regardless of what happens on the wide area network. Iptelephony is the method of routing voice through the internet or any other ipbased network by turning analog audio signals into transmissible digital data. Basic secure ip telephony design network security principles. Switch is the swiss education and research network. Chapter 7 lab 71, configuring switches for ip telephony. Vlans add complexity to a network that can bring a large amount of trouble on its own for most people. Cisco ip telephony cipt authorized selfstudy guide, 2nd. An ip network connects a variety of equipment including computers and phones using intelligent network devices such as routers and switches. A network sniffer, or packet sniffer, is a specialized software or even a hardware device that listens in over a network and records the ip packets of data that travel through it. Many network administrators use these tools to determine the efficiency of a network, to troubleshoot communication problems, to identify common network bottlenecks.
Contents vi cisco ip telephony network design guide 781110303 chapter 4 gateway selection 41 supported protocols 42 dtmf relay 43 skinny gateways 44 cisco ios h. Ip telephony solution building blocks the world is now globalall apps must traverse time and distance applications call processing infrastructure clients voice gateways, switches and routers integrated communications system directorydirectory callmanager e9e91111 pstn ip network applicationsapplications call processing infrastructure clientsclients. The hub, switch, or concentrator manages and controls all functions of. By reading this book, you will gain a thorough understanding of cisco unified callmanager version 4. It is not necessary that routers support the internet protocol, but this is the most common protocol used. A camera for video is also deployed on the network, which requires that its access port on the 2960 be manually configured. Cisco ip telephony download ebook pdf, epub, tuebl, mobi. Pdf voip is a set of protocols for voice transport over ip networks. If the switch is strictly used as a layer 2 switch, then an. The terms in parentheses terminals, gateway, and gatekeepers is the terminology used in the itu t h. As small businesses move to support both voice and data applications over a single network, they need a network infrastructure. Multiservice vpn the service provider delivers voicedata connectivity and closed user group dialing across. Internet telephony department of computer science, columbia. Cisco unified communications system for ip telephony release.
When the call originates andor terminates in public switched telephone network, and the transport is internet or wide area network wan, it is. The data is transmitted through a packetswitched network instead of the traditional circuitswitched used in common telephone land lines. Ip address can be added via the layer 2 method using the acli command ip address ip. Deploying ip telephony with exseries switches introduction the new exseries ethernet switches from juniper networks offer a number of features for optimizing ip telephony deployments. Internet protocol telephony ip telephony leverages the power of a converged network that is, a network where data and voice can coexist, thereby helping organizations to reduce the total cost of ownership tco and increase the return on investment roi. Ip telephony also known as internet telephony or voice over ip is transport of voice calls over packetswitched ipbased data networks, no matter whether traditional telephony devices, multimedia pcs or dedicated terminals take part in the calls and no matter whether the calls are entirely or only partially transmitted over the ip network.
Qos is for prioritizing the data on the network and has nothing to do with data security. Omniswitch 2220 websmart switches alcatellucent enterprise. This book teaches you how to describe, install, configure, and support cisco unified callmanager 4. Cisco small business ip phones and switches guide more and more small businesses are turning to voice over ip voip as the foundation of their business telephone communications. Technologies covered within this service include currently marketed and previousgeneration network switches and routers and ip telephony equipment. The ex3200 also supports optional fourport gigabit ethernet gbe and twoport 10 gbe. The focus is on the configuration of access and distribution layer switches to. It is not necessary that routers support the internet protocol. It provides ipv6ipv4 dual stack management and builtin l2l4 gigabit switching engine along with 8 10100baset ports featuring 36watt 802. The ex3200 switches with full poe deliver up to 18. This book will therefore help them to establish a robust, safe and secure ip telephone network that can adapt to all security threats and keep the infrastructure secure.
Voip and ip telephony are designed for different network sizes. The clustering architecture of cisco callmanagers allows you to scale to a highly available voiceover ip voip network. This assessment helps to prepare a customers network for ip telephony, and also gives critical network information to avaya support groups that will later assist with implementation and troubleshooting. Introducing the solutions and technologies is the focus of the chapter and one encounters the design and deployment of ones architecture for voice, video, and integrated data avvid network. Telstra requires that the customer has interconnects to the tipt platform from the customers telstra ipvpn as per the figure below. This capability simplifies advanced technology deployments such as ip telephony, wireless, and ip surveillance by allowing you to connect and power network endpoints over a single ethernet cable. Ip telephony costs much less then circuitswitched network, in general, because in some cases it uses an already existing network which is underutilized and the cost for setting up a packetswitched network is less than the cost to set up a circuitswitched network. Ip policy control for ensuring correct usage of media resources ip policy control means the capability to authorize and control the usage of bearer traffic intended for ims media, based on. Instead of voice switches, ip routers are used to build up a. Application note deploying ip telephony with ex series ethernet switches lldp, also known as ieee 802. To perform this lab, you need the following equipment. As more and more enterprises move into the arena of ip telephony, cisco ip telephony solutions become a natural choice. Cisco callmanager and cisco ip phones provide an ip telephony solution that operates on an ip infrastructure.
Internet protocol telephony ip telephony is the use of ipbased networks to build, provide and access voice, data or other forms of telephonic communications. For an overview of how to use the tool, see the introductory pdf on the home page. Connectivity is via the private ip network and not via the internet. Provide power to the phones using either method of connectivity. Avaya ip telephony deployment technical configuration guide. Ip telephony as a technology is the migration of the old standalone phone switch to a softwarebased switch, where the data network becomes the physical transport for voice communications, rather than using separate cabling plants for data and voice communications.
Avaya ip phones avaya ethernet routing switches engineering avaya ip telephony deployment technical configuration guide avaya networking document date. Omniswitch 2220 websmart switches gigabit websmart family of switches provide a simple, secure, and smart business network at affordable prices with alcatellucent omniswitch 2220 gigabit websmart family of switches, you can achieve reliable business class network performance and security without paying for advanced network management features. Whether maintaining onsite ip private branch exchange pbx systems or using hosted voip solutions that deliver voice. The ip telephony solution comprises five major components. Cisco ip telephony focuses on using cisco callmanager and other ip telephony components connected in lans and wans. Cisco catalyst switches with inline power for the cisco ip phones and cisco aironet ap.
Other voice over packet vop standards exist for frame relay and atm networks but. Configure two ip phones using the telephonyservice setup dialog routine. Cisco ip telephony cipt authorized selfstudy guide. This application note describes how voice over ip voip phones can be deployed in conjunction with endpoint hosts such as desktop or laptop computers. Manual use of the pstn is available if the ip wan is fully subscribed for voice traffic. If your task is to install, configure, support, and maintain a cipt network, this is the book for you. The realworld guide to securing ciscobased ip telephony applications, devices, and networks cisco ip telephony leverages converged networks to dramatically reduce tco and improve roi. This lists alcatel switches before the merger with lucent technologies. Securing cisco ip telephony networks provides comprehensive, uptodate details for securing cisco ip telephony equipment, underlying infrastructure, and telephony applications. This book provides you with a foundation for working with cisco ip telephony products, specifically cisco callmanager. Cisco ip telephony network design guide 781110303 preface this preface describes the purpose, intended audience, organization, and conventions for the cisco ip telephony network design guide. E10a e10n3 original switch introduced in 1972 one of the earliest deployments of tdm switching in the world. Cisco ip phones, which are connected to the switch port, also provide.
114 165 1409 1331 1342 24 892 1371 806 996 1013 1207 890 703 545 856 1549 1177 594 212 679 780 309 238 650 1098 822 1116 1193 60 220 26 1109