teleservices supported by a PLMN that supports Teleservice 12 are described by a number of attributes which are intended to be largely independent

NOTE They are grouped into three categories: - High layer attributes. - Low layer attributes (describing the Bearer capabilities which support the Teleservice). - Information transfer attributes. - Access attributes. - General attributes; examples include including fax-on-demand, voice mail computer telephone integration and emergency services support; in the case of GSM/UMTS circuit switched networks circuit switched networks.