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Telephone System Fundamentals |
| Virtually all telephone systems, from the earliest to the most modern, support the following three functions, regardless of their respective technologies and architectures. Users have the ability to : |
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Place outside or internal calls. |
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Answer calls. |
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Distribute calls to other users. |
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With these basic capabilities in mind, here are the fundamental definitions of key, private branch exchange (PBX) and hybrid systems that are generally accepted within the telecommunications community : |
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Key telephone system : |
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A key telephone system enables a user to DSS keys for accessing Stations or trunk keys by simply pushing a button or “key” on a telephone. The KTS phone is multi-functional, user friendly and multi-key instrument. Hold and intercom buttons are typically used to place a call on hold so that the call can be “announced” over the intercom line before being distributed to the person for whom the call is intended. Most business key telephone systems are “squared,” which means that every telephone has the same number of buttons or line appearances. This concept works especially well in small offices, where anyone can retrieve any CO line from any telephone in the system. Key telephone systems also simplify how users can establish conference calls, since all active lines appear on all telephones. |
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The KTS systems with applications can cater to various segments as follows: |
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Hotels with Basic Hotel Motel features |
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Domestic call centers with ACD MIS |
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Residential Users |
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SOHO like travel agencies |
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Financial segments with dealing room and logging solutions. |
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Banking segment with multiple branch offices |
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PBX /Hybrid IP telephone system : |
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A PBX telephone system, or Private Branch eXchange, requires that a user first dials a code — usually “9” or “8” — to access an outgoing facility such as a CO trunk, Tie trunk, ISDN PRI, BRI channel. Telephones do not require dedicated buttons for Hold and Intercom, although these conveniences can be provided as options. PBX systems typically satisfy business requirements ranging from a few trunks and stations to many thousands of trunks and stations — far more than the amount key telephone systems can support. |
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Multiple-location support and networking are also characteristics of PBX systems. Unlike a key telephone system, a feature such as conferencing can require a user to dial a feature access code to add on conference participants. Most up-to-date PBX systems also offer the option of using telephones with preprogrammed buttons to invoke feature access. |
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Hybrid IP systems also provide packet switching and support IP extensions and IP trunks with addition of hardware and software. The main technology is PCM/TDM and IP depending on the switch. |
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The Hybrid PBX systems with applications can cater to various segments as follows : |
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Hotels with Advanced Hotel and PMS applications |
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International call centers with CTI applications |
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VOIP with peer-to-peer communications and IP networking |
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Corporate Houses with various business features |
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Enterprise Networking with various branch offices |
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IP Systems |
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IP systems are mostly based on server/client and come in form factor of ‘n'U size rack mountable which is more appealing to the IT staff. |
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They provide primarily IP extensions. For Analog Extensions and PSTN connectivity, IP servers provide media gateways and media converters. The main technology is packet-switching, and they work on data infrastructure. QOS, Jitter and delay handling is the main issues here. |
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The IP systems with applications can cater to various segments as follows : |
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Converged voice and data solutions |
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CTI and Voice logger Solutions based on IP Platform |
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Multi-office networking on IP and remote survivability |
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Other applications included in the PBX category |
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Data |
| An organization's ability to deliver results is strongly determined by its backbone i.e. IT Infrastructure. Rapid technological developments have made IT-related decisions simply 'complex'. Today building a converged network infrastructure that is reliable, scalable and cost-effective involves integrating multi-vendor solutions, products and technologies. |
| The data solution offerings could be broadly classified into: |
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Structured Cabling |
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Converged Data Networking |
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| As a part of the structured cabling solution, Enkay provides a high-performance structured cabling solution that meets unique network needs. The solution includes a set of cabling and connectivity products that integrates the voice, data, video, and various management systems of a building. The backbone cabling system provides interconnections between telecommunications closets, equipment rooms, and entrance facilities. It includes backbone cables, intermediate and main cross-connects mechanical terminations, and patch cords or jumpers used for backbone-to-backbone cross-connections. |
| Enkay offers data networking products including IP Routing, WAN access, Hubs & Switching Products, and Wi-Fi Solutions. These solutions break conventional business barriers by providing reliability, survivability, security, high speed QoS and remote connectivity. |
| These competitively priced products offer network designers an excellent alternative that delivers the interoperability, functionality and reliability customers expect and demand. Data Networking Solutions offered address today's business challenges by providing reliable and highly available communications to the branch office and mobile worker. |
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| Video |
From Entry level to Professional High Definition, the Conference Room Solutions encompass a range of offerings to meet the needs of any meeting room, from small offices to large boardrooms and auditoriums. These Solutions are designed for optimal face-to-face communications and enhance the experience of meeting over video conferencing such that each meeting is seamless and integrated. |
| The product line is clearly the best, offering a video solution for nearly any application. It delivers the richest audio, clearest and sharpest video and built on High-Definition TV (HDTV) standards and provides the highest level of flexibility and performance. The specific devices deliver an integrated high quality video conference solution perfect for executive suites and remote offices, extending the conference room solutions to the personal office environment. |
The special audio devices used within the conference rooms provide a clear, crisp voice quality - even during simultaneous conversations making the calls productive and efficient. The offered solutions support wide range of data rates & the latest audio and video standards. It ensures quick and easy connection, while delivering excellent quality. |
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| Unified Communications Solutions |
Unified communications (UC) is "an industry term used to describe all forms of call and multimedia/cross-media message-management functions controlled by an individual user for both business and social purposes". This potentially includes the integration of fixed and mobile voice, e-mail, instant messaging, desktop and advanced business applications, Internet Protocol (IP)-PBX, voice over IP (VoIP), presence, voice-mail, fax, audio video and web conferencing, unified messaging, unified voicemail, and white boarding into a single environment offering the user a more complete but simpler and more effective experience. |
NEC Univerge Communication system forms a core Unified Communication Solution offering advanced IP based solution that unify products, applications and services, enabling organizations to communicate and collaborate more effectively, efficiently and reliably. |
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| Unified Messaging Solutions |
Unlike Unified Communication which refers to a real time delivery of communications based on a preferred method and location of the recipient, Unified Messaging Systems culls messages from several sources, such as, e-mail. Voice Mail, and faxes, but holds those messages for retrieval at a later time. |
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| Mobility Solutions |
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uMobility Access and uMobility Client solutions, Wi-Fi internet access |
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IP-DECT or SIP based IP-DECT for on-site wireless voice |
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WLAN for on-site wireless voice and data |
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Fixed Mobile Convergence for integration of remote and mobile devices |
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Mobility Access and Mobile Client solutions Wi-Fi internet access |
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