Infrastructure of Voice over IP Solutions for Enterprise.

Topics: Internet, Cisco Systems, Network switch Pages: 6 (1739 words) Published: March 3, 2014
I. Title and Authors

Infrastructure of Voice over IP Solutions for Enterprise.
II. Abstract / Keywords

The rapidly growing pervasiveness of the Internet is dramatically increasing the amount of data through networks from a resident or a business networks. Voice over Internet Protocol (VoIP) technology has emerged from laboratory experiments to widely used real-world applications today. Although being a highly theoretical and complex field in the technical domain, VoIP has significantly emerged in practice. New applications and products have been invented and the quality and stability increase steadily. VoIP is becoming an important alternative to the daily used telephone system, not only in terms of economic aspects but also in quality of service for both, professional and private use. A successful IP Telephony deployment is assisted by an awareness of where you are going-this comes from considering all of the elements required to deploy and maintain a converged, Voice-over-IP capable network. This project involves physically connections of VoIP using hardware such as routers, switches, call manager, and IP phones. Also, the project presents the hardware configurations to establish the VoIP network solution for an enterprise. These elements are discussed in this paper, along with guidelines for setting up a pilot project.

III. Goals / Objectives

The goal of my first project executable to provide the understanding of the configurations required to implement the fundamental elements a model application of VoIP with a call manager in the business enterprise. I will design a business scale network with routers and switches that support Cisco Call manager equipment and IP phones, deploy the physical network and configure each device to operate. I will have programmed the switch and router with the configuration to provide connectivity to the call manager and ip addresses for the ip_phones. IV. Background / Introduction

This a Visio diagram of my proposed network.

VoIP (voice over IP) is an IP telephony term for a set of facilities used to manage the delivery of voice information over the Internet. VoIP involves sending voice information in digital form in discrete packets rather than by using the traditional circuit-committed protocols of the public switched telephone network (PSTN). A major advantage of VoIP and Internet telephony is that it avoids the tolls charged by ordinary telephone service. Using VoIP, an enterprise positions a "VoIP device" at a gateway. The gateway receives packetized voice transmissions from users within the company and then routes them to other parts of its intranet (local area or wide area network) or, using a T-carrier system or E-carrier interface, sends them over the public switched telephone network. The gateway of these “VoIP devices” i.e. switches and routers are actually ports. By default all port connected to a layer 2 switch operate within the same domain, which means that if device A attach to a port 1 of a particular switch, send a frame that is a broadcast. The frame will be copied to all other devices attached to another ports on that switch. This is layer 2 limitation. However with VLANS (Virtual Local Area Network) you are able to segment that same switch to operate like multiple layer 2 bridges, so thereby providing segmentation, flexibility and security. Understanding and configuring VLANS on switches is essential to creating a secure connection in an efficient VoIP network. In my project I created VLANS on a Catalyst 3550 multilayer switch, a VLAN is a switched network that is logically broken up by function, project team, or application, without regard to the physical locations of the users. VLANs can have the same attributes as physical LANs, but you can group their end stations even if they are not physically located on the same LAN segment. Each VLAN is considered a logical network, and packets destined for stations that do not belong to the VLAN...


References: Brunner, S., & Ali, A. Voice Over IP 101 Understanding VoIP Networks. Juniper etworks White Paper, Part Number: 200087-001 (August 2006).
Route Optimization: Making the Promise of VoIP a Reality. Internap Network Services Corporation White Paper (2004). 7.
Cavanaugh, J. The Definitive Guide To: Successful Deployment of VoIP and IP Telephony. Realtime Publishers. Chapter 3. 68-69.
Cisco Systems, Cisco 1751 Router Software Configuration Guide. VoIP Configuration. 2 -7.
Cisco Systems, Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2. Performing Basic System Management. FC-273 -FC-275. Cisco Systems, http://www.cisco.com.
Cisco ICND2 – Configure, verify, and troubleshoot trunking on Cisco switches (2013) , http://chrisstark.co/2013/02/configure-verify-and-troubleshoot-trunking-on-cisco-switches/
How To Configure Router On A Stick - 802.1q Trunk To Cisco Router (2011) , http://www.firewall.cx/cisco-technical-knowledgebase/cisco-routers/336-cisco-router-8021q-router-stick.html
Cisco CallManager Express/Cisco Unity Express Configuration Example (2008) ,
http://www.cisco.com/en/US/products/sw/voicesw/ps5520/products_configuration_example09186a008037f2a9.shtml
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