Method for managing the provision of IP multimedia services in a telecommunication network, wherein the IP multimedia services are offered through a set of servers and the telecommunication network comprises at least one first network entity and a plurality of second network entities, each second network entity being adapted to access only a sub-set of said servers, the method comprising: a) obtaining at said first network entity or preconfiguring on said first network entity predetermined rules associating each type of IP multimedia service with the second network entity which has access to the server offering said type of IP multimedia service; 1) receiving at said first network entity a request for a predetermined IP multimedia service from a user equipment; 2) at said first network entity, using said predetermined rules for identifying -on the basis of the IP multimedia service requested by the user equipment - the second network entity which, among the plurality of second network entities, has access to the server that, among the set of servers, allows meeting the request for the predetermined IP multimedia service; 3) i. notifying the request made by the user equipment from the first network entity to the second network entity identified in 2), or ii. sending from the first network entity to the user equipment information about the second network entity identified in 2) so that the user equipment redirects the request for the predetermined IP multimedia service to the second network entity; 4) identifying at said second network entity the server that, among the sub-set it has access to, allows meeting the request for the predetermined IP multimedia service; 5) access by the second network entity to the server identified in 4) so as to meet the request for the predetermined IP multimedia service. a) obtaining at said first network entity or preconfiguring on said first network entity predetermined rules associating each type of IP multimedia service with the second network entity which has access to the server offering said type of IP multimedia service; 1) receiving at said first network entity a request for a predetermined IP multimedia service from a user equipment; 2) at said first network entity, using said predetermined rules for identifying -on the basis of the IP multimedia service requested by the user equipment - the second network entity which, among the plurality of second network entities, has access to the server that, among the set of servers, allows meeting the request for the predetermined IP multimedia service; 3) i. notifying the request made by the user equipment from the first network entity to the second network entity identified in 2), or ii. sending from the first network entity to the user equipment information about the second network entity identified in 2) so that the user equipment redirects the request for the predetermined IP multimedia service to the second network entity; 4) identifying at said second network entity the server that, among the sub-set it has access to, allows meeting the request for the predetermined IP multimedia service; 5) access by the second network entity to the server identified in 4) so as to meet the request for the predetermined IP multimedia service. 1) receiving at said first network entity a request for a predetermined IP multimedia service from a user equipment; 2) at said first network entity, using said predetermined rules for identifying -on the basis of the IP multimedia service requested by the user equipment - the second network entity which, among the plurality of second network entities, has access to the server that, among the set of servers, allows meeting the request for the predetermined IP multimedia service; 3) i. notifying the request made by the user equipment from the first network entity to the second network entity identified in 2), or ii. sending from the first network entity to the user equipment information about the second network entity identified in 2) so that the user equipment redirects the request for the predetermined IP multimedia service to the second network entity; i. notifying the request made by the user equipment from the first network entity to the second network entity identified in 2), or ii. sending from the first network entity to the user equipment information about the second network entity identified in 2) so that the user equipment redirects the request for the predetermined IP multimedia service to the second network entity; 4) identifying at said second network entity the server that, among the sub-set it has access to, allows meeting the request for the predetermined IP multimedia service; 5) access by the second network entity to the server identified in 4) so as to meet the request for the predetermined IP multimedia service.