TEC | Generic Requirements

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Generic Requirements

  • Generic Requirements (GR) for a telecom network element or a set of network elements, are its requirements to work seamlessly in Indian Telecom Network. Requirements are classified in two parts – minimum “mandatory” requirements and “desirable” requirements. These requirements refer to the following
    a. Interconnectivity and interoperability requirements
    b. Quality requirements
    c. EMI/EMC requirements
    d. Safety requirements
    e. Security requirements
    f. Any other equipment specific requirements that are considered mandatory
    g. Desirable requirements, if any
  • GR is assigned specific numbers for ease of identification. TEC shall concurrently create Test Schedules and Test Procedures for every GR in order to test and validate network elements.
  • GRs may also consist of key generic functionalities and implementations that can become a differentiating factor for a user, in selecting network elements. Clauses that describe such requirements shall be termed as “Desirable” and shall be enumerated in a separate chapter. Desirable clauses are not mandatory but are considered generic in the design scheme of a network element. Care shall be taken to ensure that desirable clauses belong to the category of “state-of-the-art” and shall not be specific to a particular Service Provider’s routine requirements.


  • Format of a GR is as under
    History Sheet
    1. Introduction (to network element, or system)
    2. Description (of network element, or system in terms of components,
    architecture, etc.)
    3. Functional Requirements
    4. Interconnectivity and Interoperability Requirements
    5. Quality requirements
    6. EMI/EMC requirements
    7. Safety requirements
    8. Security requirements
    9. Other Mandatory Requirements
    10. Desirable Requirements
  • Interface protocols, particularly at higher layers specific to a GR, may be detailed within it. However, there may be interface protocols, mostly at lower layers, such as CCS No. 7 signalling, ISDN PRI, LAN and WAN interfaces, etc., which are commonly used by many network elements, which shall be defined separately as Interface Requirements (IR), and can be referenced by different GRs, whenever needed.
  • Similarly, Quality, EMI/EMC, Safety and Security requirements, which are common in various GRs, may also be defined separately so that they can be referenced by different GRs as needed.


  • GRs are numbered in following format
    No: TEC/GR/AA/BBB-xxx/vv/MMM-YY
    TEC: Telecommunication Engineering Centre
    GR: Generic Requirements
    AA: Network Element Family name* (alphabets)
    BBB: Network Element (Child) name (alphabets)
    xxx: Child reference (alpha-numeric value)
    vv: Version reference (numeric value)
    MMM: Month in which GR is released
    YY: Year in which GR is released
    * SW for Switching Equipment
    TX for Transmission Equipment
    PI for Passive Infrastructure Equipment
    IT for Information Technology Equipment
    CP for Customer Premises Equipment
    WS for Wireless Systems
    SA for Services & Applications
  • For example: GR for MUX equipment released in May, 2008 is numbered as TEC/GR/TX/MUX-001/01/MAY-08