Source: "The head of Master's work Voropaeva VY"

621.396

FEATURES OF CONSTRUCTION OF CORPORATE SERVICE FOR INTEGRATED "DONETSKKOKS"

Voropaeva VY, Spiridonov DV
Donetsk National Technical University

In the article of feature of creation of corporate network of integral service for the terms of Joint-stock COMPANY “Donetskkoks” with the simultaneous use of analog and digital equipment.

JSC "Donetskkoks" - large industrial enterprises holding large area. Bright expressed division into production and administrative personnel. Domestic traffic exceeds the outside. At the enterprise there coordinate station ATSK 100/2000 and digital station Definite, which is the agency ATS and taking into account the large capacity and administrative division into a tip ATS public network. By Definite station connected 300 subscribers, most of whom are employees of the administrative corps. By ATSK 100/2000 station connected 2 000 employees. In the process of creating a corporate network of integrated services were produced partial subscriber switching capacity ATS old to the new digital stations and the inclusion ATSK 100/2000 into a single institutional network. The network has direct access to urban telephone network and long distance telephone service via IP-services provider. In the near future, planned to build a common network capacity to 3 000 ports and fully switch all subscribers internal phone network to digital УПАТС.

For corporate network between subsidiaries of JSC "Donetskkoks" suggested to use a virtual telephone network. Telephone station affiliates are connected to one field operators and use the direct connection to communicate with the central office. If necessary, connect to another office reduced the number recruited another ATS and connect with the necessary subscriber. In the corporate network software you can create a unified plan of the rooms, and changing numbers ATS will be recruited to carry out automatically. But because of the heterogeneity of signaling protocols in a virtual network is only available with a simple phone call to the phone.

The company JSK "Donetskkoks" telephone stations connected to TCU on digital E1 path. The essence of solutions that Definite PBX installed as a "counter" between the PSTN and coordinates station ATSK 100 / 2 000, the digital stream is included in the E1 Definite, and coordinate ATS connects to it on two-SL. That is, Definite plays the role of the muscle-transit ATS converter and the role of signal systems. Under such a network topology (Fig. 1) Definite switches the call from a landline subscribers at ATSK 100 / 2 000, either on their own. At the cost of this decision is comparable with the installation of three converters wire lines in the digital flow of E1 to the old station, but has a clear lead, as easily combined with the LAN and provides integral services.

Figure 1 - Schema co inclusion ATSK 100/2000 and Definity

In fact, JSC "Donetskkoks" has a full two geographically distant from each other proceedings, and served as a starting point for designing network topology. The supporting station joins the city telephone network using fiber-optic cables on the four channels E1 (2 Mbps). To ensure the communication unit of the remote junction UPATS built subscriber takeaways with connection to fiber. The connection between the central and remote carried out at speeds of 34 Mbps.

Definity supports all kinds of signal systems used in the networks of the Ukraine. In addition, Definity supported the inclusion of IP networks at the level of the station without additional converters and access devices. The station may be geographically SPLIT architecture, with the subscriber makes can be connected to the processor state through IP or ATM network. Subscribers can be Definity traditional analog phones, multichannel digital terminals connected to the station with the same two-copper endings, as well as IP-subscribers.

Definity is able to switch different voice channels and data streams and is intended to cover the subscriber capacity of 100 to 2 400 ports, the maximum weight capacity to provide services system 40 000 calls in peak hours and 723 simultaneous conversation. Using remote module allows you to build a geographically extensive network within the same station from a centralized management system that in this case is more appropriate solution than the establishment of a network of several УПАТС.

Thus for example, consideration of building a corporate network JSC "Donetskkoks" was shown original way of combining analog equipment with modern digital station that is now pressing problem for many large enterprises. On the basis of outdated moral coordinates ATS was built modern geographically distributed corporate network of integrated services, a single telecommunications system with the overall plan and uniform numbering functions.

07.03.2006.