A digital telecommunications system for creation, implementation, integration and deployment of digital applications and services, said system being an applications and services platform (14, called USSD CENTER: - located within a server in a mobile telecommunications network, - adapted to perform creation, implementation, integration and deployment of non-voice services such as USSD, and comprising at least: - an applications and services server module, called Browser, comprising at least one VXML interpreter, adapted to exchange information with at least one USSD services module comprising non-voice lists of services such as USSD, said USSD services module being adapted to call, from at least one VXML files module and by using VXML protocol, at least one VXML file describing at least one non-voice service such as USSD, said non-voice services such as USSD of said USSD services module being deployed in said Browser as VXML files, - an USSD access gateway module adapted to communicate with said Browser and to exchange data with a SS7 core network by using a MAP protocol, - a network gateway module, adapted to communicate with said Browser and to exchange data with said network core by using a SS7 protocol, - an integration gateway module, adapted to communicate with said Browser and to communicate with an IP network by using an IP protocol, - a database and profiling module adapted to communicate with said Browser and comprising information on users and services profiles, and - an internal management administration module comprising a WEB system administration comprising an environment for services creation, for testing, deployment and versions management of these services, a control module of said USSD CENTER and modules for configurations of the functionalities, parameters and network gateways. - located within a server in a mobile telecommunications network, - adapted to perform creation, implementation, integration and deployment of non-voice services such as USSD, - an applications and services server module, called Browser, comprising at least one VXML interpreter, adapted to exchange information with at least one USSD services module comprising non-voice lists of services such as USSD, said USSD services module being adapted to call, from at least one VXML files module and by using VXML protocol, at least one VXML file describing at least one non-voice service such as USSD, said non-voice services such as USSD of said USSD services module being deployed in said Browser as VXML files, - an USSD access gateway module adapted to communicate with said Browser and to exchange data with a SS7 core network by using a MAP protocol, - a network gateway module, adapted to communicate with said Browser and to exchange data with said network core by using a SS7 protocol, - an integration gateway module, adapted to communicate with said Browser and to communicate with an IP network by using an IP protocol, - a database and profiling module adapted to communicate with said Browser and comprising information on users and services profiles, and - an internal management administration module comprising a WEB system administration comprising an environment for services creation, for testing, deployment and versions management of these services, a control module of said USSD CENTER and modules for configurations of the functionalities, parameters and network gateways.