The classification of a telecommunication engineer shall be categorized as either Class A or Class B, the operating ranges of which shall be as follows:
1. Class A telecommunication engineer（s）: refers to an individual who is responsible for and supervises the construction, maintenance, and operations of the facilities of a telecommunications enterprise, or an individual who is responsible for the construction and supervision of telecommunications equipment connected to the public switched telecommunications network（PSTN）.
2. Class B telecommunication engineer（s）: refers to an individual who is responsible for the construction and supervision of telecommunications equipment connected to the PSTN.

Class A telecommunications engineers shall possess one of the following qualifications:
Experience of more than one year with certification in the work of telecommunications switching, telecommunications transmission, data communications, telecommunications electric power, or telecommunications circuits. The individual shall possess one of the following additional qualifications:
Successful qualification of the Senior National Examination or Special Examination that is equivalent to the Senior National Examination in the subjects of automatic control engineering, electric power engineering, control engineering, electronics engineering, telecommunications engineering, electrical engineering, information engineering, information processing, or information science; successful qualification of the Special Professional and Technical Personnel Senior National Examination or Qualification Examination for electrical engineering, electronics engineering technician, and information technician or successful qualification of first-class, second-class or third-class Special Examination for telecommunications senior technicians;
Successful qualification of the communications business personnel upgrade examination for a telecommunications senior technician during the period working for a telecommunications enterprise;
Successful qualification of the first-class line circuit operator examination of the Special Examination for a telephone operator;
Successful qualification of the Senior National Examination or Special Examination that is equivalent to the Senior National Examination in the areas not listed in item（1）and also qualified based on the senior technician position in accordance with to the communications business personnel qualification regulations during the period working for a telecommunications enterprise.
Experience of the more than three years in the work of telecommunications switching, telecommunications transmission, data communications, telecommunications electric power, or telecommunications line circuits, holding certification in any of the following:
Successful qualification in electric power engineering, electronic engineering, telecommunications engineering, electrical engineering, information engineering, or information processing of the General National Examination or the forth-class Special Examination equivalent to the General National Examination, or a pass in the forth-class Special Examination for telecommunications technicians;
Successful qualification of the communications business personnel upgrade examination for telecommunications technicians during the period working for a telecommunications enterprise;
Successful qualification in the second-class line circuit operator or switchboard operator examination of Special Examination for telephone operators;
Certification in second-class or higher class telecommunications technology technician issued by the Ministry of Labor;
Successful qualification of the General National Examination or Special Examination that is equivalent to the General National Examination in the areas not listed in the item（1）of this subparagraph and also qualified based on the technician position in accordance with the regulations of communications business personnel qualification during the period working for a telecommunications enterprise.
Holding certification or a degree in telecommunications engineering, electric power engineering, electronic engineering, control engineering, information engineering or information processing, electrical engineering, information or related disciplines from a public university or private university that is legally registered for the status claimed, a college or foreign university that is recognized by the Ministry of Education, holding certification for experience of more than two years in the work of telecommunications switching, telecommunications transmission, data communications, telecommunications electric power or telecommunications circuits.
Having served as a telecommunications engineer in accordance with subparagraphs 3 to 8 of Article 5 of these Regulations, holding relevant certification for being engaged in the telecommunications switching, telecommunications transmission, data communications, telecommunications electric power or telecommunications line circuits work for more than five years.
Having served as a telecommunications engineer in accordance with subparagraph 9 and 10 of Article 5 of these Regulations, holding relevant certification for being engaged in the telecommunications switching, telecommunications transmission, data communications, telecommunications electric power or telecommunications line circuits work for more than eight years.

Class B telecommunications engineers shall possess one of the following qualifications:
Successful qualification of the Senior National Examination or Special Examination that is equivalent to the Senior National Examination in the subjects of automatic control engineering, electric power engineering, control engineering, electronics engineering, telecommunications engineering, electrical engineering, information engineering, or information processing, information science; successful qualification of the Special Professional and Technical Personnel Senior National Examination or Qualification Examination for electrical engineering, electronics engineering technicians, or information technicians;
Successful qualification in the area of electric power engineering, electronic engineering, telecommunications engineering, electrical engineering, information engineering, or information processing in the General National Examination or the forth-class Special Examination equivalent to the General National Examination;
Successful qualification in the level equivalent to or above of the Special Examination for telecommunications assistant technicians;
Successful qualification of the Special Examination for telephone operators;
Successful qualification in the level equivalent to or above of the communications business personnel upgrade examination for telecommunications assistant technicians during the period working for a telecommunications enterprise;
Holding certification in the third-class or higher telecommunications technology technician issued by the Ministry of Labor;
Holding certification and degree from the electronic engineering, electronic engineering, telecommunications engineering, information, information engineering, information processing, electric power engineering, control engineering or other related departments from a public or private junior college that is legally registered for the status claimed or from a foreign junior college that is recognized by the Ministry of Education or holding qualified certification from a junior college in accordance with related laws;
Successful qualification of the General National Examination or Special Examination that is equivalent to the General National Examination in the areas not listed in technical areas of subparagraphs 1 and 2 of this Article and has also qualified as a technician in accordance with the communications business personnel qualification regulations during the period working for a telecommunications enterprise;
Experience of more than three years serving as a telecommunications engineer, holding relevant certification for telecommunications switching, telecommunications transmission, data communications, telecommunications electric power, or telecommunications circuits work;
Holding certification from the electrical engineering, electronic engineering, electronic automatic control, control, electrical signal, electronic communications, information and related disciplines in public, private domestic skill-based senior high school or foreign skill-based senior high school that is recognized by the Ministry of Education, or holding certification from skill-based senior high school in accordance with related laws, and having relevant certification of telecommunications switching, telecommunications transmission, data communications, telecommunications electric power or telecommunications circuits work for more than three years;
Certification in Class C or above interior wire distribution, industrial wire distribution, electronic wire repair, electronic cable repair, electricity change equipment repair, electronic equipment detection category technician issued by the Ministry of Labor or class A or class B electrician with certification in accordance with laws.