Enterprise Everywhere

Download Enterprise Everywhere

Post on 18-Nov-2014

447 views

Category:

Documents

0 download

Embed Size (px)

DESCRIPTION

IP, Telecom, VOIP, Telephony

TRANSCRIPT

<ul><li> 1. WHITE PAPERSeamless UnifiedCommunications for theEverywhere Enterprise </li> <li> 2. Table of Contents1. Executive summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32. The Enterprise IP PBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43. Adding Unified Communications to VoIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54. Integrating Mobility Seamlessly and Securely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75. Implementing an Integrated UC/VoIP Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86. Conclusion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 1: Distributed architecture diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Figure 2: Total Cost of Ownership (TCO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Seamless Unified Communications for the Everywhere Enterprise PAGE 2 </li> <li> 3. 1. Executive summary This white paper examines the considerations an IT manager faces when seeking toThe Changing Nature of implement Unified Communications (UC) seamlessly (and successfully) throughoutBusiness Communications the Everywhere Enterprise. And virtually every enterprise is everywhere these days.In a white paper titled The Employees work at offices, of course, but they also work at home and from public places,Changing Role of Mobile including airports, hotels, customer and partner facilities, and coffee shops. As will beCommunications in the shown, the simplicity and quality of the user experience are what should be consideredWorkplace, Frost &amp; Sullivan the hallmark of a successful implementation of seamless UC for the Everywheremakes an important Enterprise.observation about theEverywhere Enterprise: As Owing to its ability to deliver dramatic improvements in productivity, a wide variety of UCcompanies grow increasingly solutions are currently available, and most of these work well enough. The real challengeglobal and dispersed, with for IT managers, therefore, becomes making an optimal selection from among the manyemployees working from choices available. Which one has the set of features that best matches the organizationsplaces other than the office needs and culturenow and in the future? Which one is the most cost-effective? Whichon a regular basis, one will be the easiest to implement, use and manage?organizations must deploytechnology that supports Further complicating the task, most organizations will not be implementing UC fromcommunications and a clean slate. Most enterprises now have voice over IP (VoIP) communications, instantcollaboration for a growing, messaging and/or Web conferencing solutions for some or all employees. Many are alsoand changing, population of investing in a mobility solution to integrate smartphones and tablets into their enterprisemobile workers. Unified wireless LANs, and may already support VoIP over the WLAN (VoWLAN).communications, which In such environments, implementing Unified Communications enterprise-wide in aincorporate voice, presence, way that is seamless and consistent for users and administrators alike can indeed beconferencing and chat a daunting challenge. The effort is well worth it, though, because UC is capable ofcapabilities, make it easier for delivering tremendous benefit to any organization.people to share information,locate experts as soon as they Laying the Foundation for Enterprise-wide UCneed them, speed andimprove decision-making, The situation in most enterprises seeking to implement Unified Communications todayand drive productivity. But to can be broadly characterized as one of two scenarios:be truly valuable to allemployees, UC technologies Greenfield environments, where voice communications remain mostly or exclusively especially voice and circuit-switched.presence must be made oIP environments, where the organization has already deployed an IP PBX and IP Veasy to use and available to phones.everyone who needs them,regardless of where they are The former obviously has the luxury of implementing a fully integrated UC solution fromworking or on which device. a clean slate. But the latter also has the ability to implement a fully functional, easy-to- use, and cost-effective UC solutionone that preserves the investment in VoIPwith the right approach. Seamless Unified Communications for the Everywhere Enterprise PAGE 3 </li> <li> 4. 2. The Enterprise IP PBXAt the risk of over-simplification, IP PBXes have either a centralized or a distributedarchitecture. Centralized architectures are characterized by a single, very large systemdesigned to support tens of thousands of users. Remote users normally connect via theenterprise WAN back to the centralized system. Whether local or remote, all users aredependent on the central system for voice services.Distributed architectures work differently. System capabilities are provided by multiplesmaller systems internetworked via the enterprise WAN and/or the Public SwitchedTelephone Network (PSTN). Instead of a single, central mainframe IP PBX providingdial-tone for all end users, the distributed configuration involves a network of 10, 20 oreven 100 smaller IP PBX modules all working in unison to deliver the same capabilities.Even though there are multiple modules in the distributed architecture, the configurationstill provides a single service to all the end users and can be managed as a single systemby the administrators.In general, the distributed architecture is superior for any organization with multiplefacilities. Vendors of distributed solutions normally offer a range of modules at differentprice/performance points, enabling the configuration to be right-sized at each site tominimize costs. These modules are usually designed as dedicated appliances to ensureadequate performance for the number of local users supported, but some solutions areavailable as software capable of running on an ordinary server. ShoreTel Director PSTN /ITSP HEADQUARTERS INTERNATIONAL BRANCH Headquarters Server (System Adminstration, voicemail, ShoreTel ShoreTel Communicator &amp; auto attendant, work groups) Communicator &amp; RoamAnywhere [Physical or Virtual] RoamAnywhere Analog Device ShoreTel Voice Switches ShoreTel Contact Communicator Distributed Voice Center Server (voicemail &amp; auto attendant) ShoreTel [Physical or Virtual] ShoreTel Appliances (Collaboration, Communicator VPN Concentrator, Contact Center &amp; Mobility Router) ShoreTel ShoreTel IP Phone IP Phone ShoreTel Voice Switches IP WAN ShoreTel Communicator &amp; ShoreTel RoamAnywhere ShoreTel Voice Switch Communicator &amp; ShoreTel RoamAnywhere Communicator ShoreTel Legacy VPN Phone Voicemail OFFICE Legacy ANYWHERE Phones Legacy PBX PSTN /ITSP REGIONAL OFFICE PSTN SINGL E E-IMAGE ARCHITECTUR Figure 1: Distributed ArchitectureSeamless Unified Communications for the Everywhere Enterprise PAGE 4 </li> <li> 5. The distributed architecture also has the inherent advantage of being both more reliableand more scalable. The use of multiple, modulesall internetworked and functioningin unisonenables the sessions being managed in any one experiencing a failure to betransitioned to another, automatically and often transparently. And rather than requiringany major or forklift upgrades, additional modules can simply be added as neededto increase capacity or to support more users, thereby affording both incrementalscalability and increased resiliency in the enterprise-wide N+1 system configuration.To maximize the reliability and scalability advantages of distributed architectures, thebest modules are designed with built-in redundancies to minimize local failures, andthe entire network of modules can be configured and managed as a single system.This latter ability is a major area of differentiation among available solutions. In somecases, different modules offer different feature sets and, therefore, must be manageddifferently. In other cases, the only difference among modules is their size (the numberof users supported), and these solutions can usually be managed by a single console andsometimes with a single software ima...</li></ul>