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DESCRIPCI?N DE LAS ETAPAS 2 Y 3 DE LA INTERFAZ Q3 – ADMINISTRACI?N DE CLIENTES – FACILIDADES FACULTATIVAS DE USUARIO DE LA RED DIGITAL DE SERVICIOS INTEGRADOS
STAGES 2 AND 3 DESCRIPTION FOR THE Q3 INTERFACE - CUSTOMER ADMINISTRATION - INTEGRATED SERVICES DIGITAL NETWORK (ISDN)@ OPTIONAL USER FACILITIES 是非强制性国家标准,您可以免费下载前三页