scalabilities networks.

therefore application of program switchboards from the point of view constructions of a network is the technological investment into the future, as CONSTRUCTION DEPARTMENT - 7 supports today work in Telecommunication network , and only островки new batch networks are signalled with application of IP-report.s

As it was marked above, a nucleus networks of new generation the program switchboard - a brain of a network, which is accumulates all intelligence of a network, and other elements located on levels of access, sluices, transport, are deprived intelligence and completely подконтрольны to the program switchboard, that as a whole promotes the best controllabilities and scalabilities networks.

In case of prevalence on a network analog the equipment, morally and physically out-of-date, it is possible to modernize a network, using the program switchboard as distributed telephone the concentrator that will allow to achieve decrease in charges on construction and operation of a network because instead of two separate networks (with switching channels and packages) one network, functions of central (transit) automatic telephone exchanges will be under construction will carry out the program switchboard, the opportunity more the economic organization of new services.

the Equipment of program switching for providing of access (sluices) it is applied in several cases.

it is the Most favourable to apply sluices in a combination to technologies broadband access And DSL which allow to transfer great volumes of the information on copper lines, effectively to use copper user's infrastructure. Together technologies NGN and DSL allow to finish with the consumer on one copper pair not one telephone channel, and the high-speed data link plus up to several tens telephone channels simultaneously. This main advantage which we can today to receive at a level of access.

at modernization of a network it is necessary to plan modernization out-of-date park of the equipment, having provided with his(its) opportunity to give base set of services and to start to introduce the equipment of program switching on transit level. Groups of subscribers which at once will get on switchboard NGN, additional services will receive a base set plus: broadband access, video by inquiry, multimedia services, etc. In given case it is possible to use the program switchboard as distributed the telephone concentrator that will allow to achieve decrease in charges on construction and operation of a network because instead of two separate networks (with switching channels and packages) one network will be under construction, and functions of central (transit) automatic telephone exchanges will be carried out with the program switchboard, the opportunity of more economic organization of new services will appear.

expediently not simply to increase number capacity, and to put with the parties(sides) of user's access some the user's concentrators having an opportunity to be included on ИКМ to pathes in a network with switching channels and under IP-reports in network with switching packages. The similar approach will allow to protect for long time investments and at the same time it is accurate, эволюционно to develop the networks: to decide essential problems on increase in number capacity, gradually to replace automatic telephone exchange decade - step-by-step type, focusing investments mainly in a network user's access. Interface V.5.2, on which equipment of access it is joined with Telecommunication network , switching working by a principle channels, will allow the same equipment to work in the future in a joint with routers batch networks.

second, it is necessary to look on to extreme measure for five years forward and to get the equipment multiservice user's access which can work in the future networks with switching packages.

In 2003 in Donetsk construction fiber is completed rings in the extent of 89 km, having an output on cross all automatic telephone exchanges. The circuit of construction fiber and plans of its developments are displayed on fig. 1 .

therefore there is a real opportunity of application of principles of technologies new generation on constructed fiber with application of the equipment electronic switching « SoftSwitch » with the distributed(allocated) architecture managements of carrying out. For this purpose virtual (logic) channels are organized between managing complex and its carrying out (sluices). It has hot reservation also it is located on "ring" in a building of one of automatic telephone exchange that provides cluster structure of reservation of the basic functions of management of a network. Such in the image, for construction of a reliable and flexible network of city in management digital streams it is necessary 2 « softswitch » and 7 complete sets the equipment of carrying out (sluices).

at the first stage to sluices working digital stations are connected and units of access And DSL. In process of replacement of analog stations on digital the network « will be amplified », and on it will be gradually "to be overloaded" the voice traffic.

the network infrastructure Created thus will allow in parallel to solve questions of the organization of access to a high-speed network and to carry out formation and sale of digital (interdistrict) channels, need in which constantly grows, to increase number of points of access to to the Internet as on the allocated line, and without password to access.

at the following stage probably connection to carrying out of a network and telephone exchanges of coordinate type, using for this purpose available ICM the equipment or other types ADD nowadays working on cities MSS. Such by image can be carried out stage-by-stage, "smooth" modernization of a network switching all working stations in uniform also is made unit of switching on the basis of the equipment « SoftSwitch ».

Conclusions:

•     In a basis of a choice of technology and the concept perspective development, modernization or development of a network of the enterprise of communication there should be economic motives. In multiservice networks these motives are expressed in granting new services and decrease in expenses on their formation due to a unique opportunity of construction technological infrastructures with the distributed switching and the flexible unified structure managements.

•     the Concept multiservice networks it is rather complex and there are no standards on its use. Therefore designing of similar systems represents high « technological art » the system integrator.

•     Technology NGN can be realized only with the help of mechanisms of batch transfer and technologies program switching which are basic elements multiservice networks.

•     Use of the equipment « SoftSwitch » gives real opportunities automation of process of import of the data on the submitted services in existing at the enterprises the automated systems of complex calculations (ASCC).

•     the Most important in NGN - the account of a condition balance between its cost, reliability and quality of given services.