On March 21, 2002, the first regional access point to the general transit communication network was put into operation in St. Petersburg. The node is located in the building of the automatic long-distance telephone exchange of the company "Petersburg City Telephone Network". On March 27, 2002, the first operator, Telecom XXI, a subsidiary of MTS, which offers cellular services in the GSM-900/1800 standard in the North-West region of Russia, connected to the first regional access point. At the same time, Interregional TransitTelecom began trial operation of access nodes in Kaliningrad and Krasnodar.
The rapid development of cellular communications in Russia led to the fact that long-distance telephone exchanges could not cope with the increased traffic. In large cities, the long-distance access code - "eight" - was overloaded, most of the time a busy signal sounded for the subscriber. Telephone nodes of fixed networks were built without relying on mobile subscribers.
To solve this problem, it was required to organize interaction between fixed and mobile communication networks, as well as to increase the capacity of long-distance telephone exchanges. Interregional TransitTelecom, as an enterprise acting in the interests of all operators, took up this task and developed a program for the creation of local switching centers (LCC).
The local switching center has become an element of the common transit network for federal networks of NMT-450 and GSM-900/1800 standards, intended for interfacing the transit network, MTP networks and the fixed PSTN network directly within the geographical area of numbering.