1. A mediating method between signaling network peers of diameter type, where each peer is associated with different telecommunication service providers network and/or different application vendors, said method comprise the steps of: identifying equipment application type and release version of each provider or vendor based on pre-defined automatic identification classification rules and profile; classifying the vendor of the implemented diameter application in each signaling peer; retrieving a first set of rules adapted for the identified source equipment type; intercepting messages of communication session between signaling peers of different providers; applying access control rules for validating intercepted messages. applying steering rules on outgoing requests for selecting the destination route of target peers; retrieving a second set of conversion rules adapted for the identified destination equipment type vendor application relating to messages structure, content types and content values; applying filtering rules on communication session data eliminating redundant information. applying all conversion rules on intercepted messages, for translating between messages formats of the different signaling peers;