Method for determining the minimum cost installation for apparatuses of a fixed telecommunication network

Method (10) for determining a least cost installation for the apparatuses of a fixed telecommunication network, comprising nodes of the access network (C, D, . . . , I), which are able to perform different types of switching, in particular circuit switching, packet switching or circuit cross-connecting, and are connected according to single, dual free or dual fixed pair homing to nodes of the transit network (A1, A2, B1, B2), having a set of inputs (900) and being able to provide a set of results (9000), characterised in that it comprises the following steps:

• the insertion of said set of inputs (900);
• a first step of calculating an initial network configuration (1000), in which a network structure consistent with the requirements of said set of inputs is determined;
• a second step of optimisation (2000), in which the initial configuration is subjected to changes in the choice of the transit nodes and of the homing of the access nodes to the transit nodes, aimed at reducing the cost of the configuration;
• a third step of post-optimisation (3000), in which the combination in fixed pairs of the transit nodes and the homing of the access nodes to the transit nodes is modified, aimed at further reducing the cost of the configuration;
• the delivery of said set (9000) of results, representative of the least cost installation for the fixed network apparatuses.