For interoperation of heterogeneous management systems and integration of existing legacy applications in telecommunication network management systems, a translation from GDMO/ASN.1 to a universal language is necessary. Inheriting the extensibility and flexibility of XML, as the application of XML in telecommunication, tML can be used in definition and publication of management interface information model in telecommunication network management regardless of its implementation platform and language. This paper resolves one of the key problems of integrating tML in telecommunication network management: the translation from GDMO/ASN.1 to tML/Schema. This paper studies the translation method from GDMO/ASN.1 to tML/Schema. The corresponding relationship between GDMO/ASN.1 and tML/Schema is analyzed in this paper. The translation process consisting of two steps, that is, the translation from ASN.1 to tML/Schema and the translation from GDMO template to tML/Schema, are discussed in this pap...