TEC | Generic Requirements

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

GRs shall be 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.

GR FORMAT
Format of a GR shall be as under
Contents
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 Glossary

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.

GR NUMBERING
GRs shall be 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
3 WS for Wireless Systems
SA for Services & Applications
For example: GR for MUX equipment released in May, 2008 shall be numbered as TEC/GR/TX/MUX-001/01/MAY-08