To ensure the effective functioning of the solutions requires the correct approach to the design of the system. IP-based PBX is a server hardware or that class, therefore, the power of this equipment will depend on its performance. In favor of IP-telephony can be attributed to effectively use computer telephony – CTI (Computer Telephony Integration). CTI – a technology that is located at the intersection of technologies of communication and computer technologies. It gives a whole new possibilities for solving many problems.
CTI technology allows you to take advantage of computer technology (standards, flexibility, compatibility, easy to use and familiar interface, etc.) for the management of traditional telephone connections. In addition, CTI technology allows the use of ordinary telephone as an additional device to your computer. One of the main advantages of CTI – the openness of the systems on its base, as computer telephony standards-based CTI system and therefore easily changed, modified and extended. You also need to provide the required solution components required for any decision based on IP. These Components include a reliable network infrastructure, providing opportunities to implement mechanisms of quality of service (especially in critical areas – QoS), ensuring the necessary level of security. At the need for wireless solutions can be deployed in wireless WiFi-network, which also has the ability to support wireless IP-phones and data services.
The most popular suggestions in the market, corresponding to the above parameters: Nortel Communication Server 1000-based solution for companies both traditional telephony and at the highly secure and highly reliable IP-telephony. Cisco Unified Communication Manager solution for corporate telephone network to an IP-based telephony, which is used instead of or in addition to traditional PBX, implementing the concept of unified communications. Alcatel OmniPCX Enterprise solution for reliable traditional telephone communications and IP-telephony for large enterprises with from 20 to 15 000 subscribers and up. Alcatel OmniPCX Office solution for reliable traditional telephony and IP-telephony for small and medium-sized enterprises with 5 to 200 users. Nortel Business Communications Manager 50 decision telephony with ample opportunities for companies that had between 5 to 50 users. In the case of proper design and construction solutions telephony can improve operational efficiency, in First of all, in organizations with extensive branch network – the banking sector, insurance and telecommunications companies, etc. These solutions will improve the quality of service complaints clients and distinguish the company among its competitors offer more favorable terms of service. But, otherwise, the decision will provide a telephone "hot spot" on the problems with which the IT specialists will conduct "Fierce fighting" with no hope of success. Therefore, in order to minimize the likelihood of problems in designing and implementing telephony systems should seek the services of professionals, to help choose the right solution and implement a telephony system given the existing infrastructure development plans of the company, technical requirements and security and also be able to maintain quality and develop it further. When choosing an integrator is necessary, first of all, pay attention to the engineering staff of the company, availability of certified professionals on products of leading manufacturers telecommunications equipment, as well as the logistical base to carry out projects of any complexity. Professional consultants in the preparation and implementation of integrated telecommunication systems design work carried out to allow for safe and efficient operation of the constructed system and optimize the cost of its implementation and subsequent operation. An important factor in the choice of integrator is the availability of the flexibilities provided support to enable to provide high quality service in the shortest possible time.