CONCEPTUAL MODEL OF SPECIAL-PURPOSE OPTICAL TRANSPORTATION NETWORK UNDER DESTRUCTIVE IMPACT CONDITIONS

Public telecommunications resources continue to be widely used as an auxiliary component in the construction of special-purpose communications networks. In order to reduce the risks of disruption of communication security and stability of special-purpose communication networks, telecommunication services are leased at the physical layer. With the transition to a flexible frequency grid and the development of spectrum switching and routing technologies in optical networks, a new physical layer telecommunication service – spectrum leasing – became available, which is a generalization and development of another service – wavelength leasing or socalled grey lambdas. A number of advantages associated with the possibility of flexible channel structure management in the context of changing requirements to the bandwidth capacity of communication directions makes spectrum leasing an attractive solution for the construction of optical transport networks for special purposes, but requires additional research of possible risks associated with multiple access of users to the elements of the infrastructure of telecom operators. The model of an optical transport network formed on the basis of a new type of telecommunication services and functioning under the conditions of possible destructive impacts is considered.