(1) User shall keep evidence of compliance on availability for the previous two calendar years plus the current year for all the interfaces which are in operation.
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(2) Historical data of ninety days shall be kept.
18. System upgradability and expandability. (1) All Communication interfaces shall be sized, though not necessarily equipped, to support system/subsystem expansion or upgradation to full capacity as provided by specified aggregate transmission rates.
(2) Equipment units provisioned for equipped sub-units shall be terminated with appropriate termination interfaces.
19. Centralised monitoring. (1) Control centre shall have centralised supervision and monitoring system by integrating its network management system with network management system of other users and standalone network elements, which are not being monitored on network management system within its jurisdiction on national and regional basis.
(2) Users shall provide necessary support to interface their network management system or network element with centralized network management system.
(3) Users shall take necessary action for operation and maintenance of their respective interfaces.
(4) Network management system shall have features to store necessary information and facility to generate report on communication system availability of major equipment as well as the data channels on daily or weekly or monthly or annually basis.
(5) Network management system shall have displays for audio-visual alarm generation and logging facility to facilitate the operator for quick fault detection.
(6) Network management system shall facilitate access to the equipment for configuration and fault restoration as well as to facilitate monitoring the performance of the communication system.
(7) Centralised monitoring shall be in main and back-up control centre architecture with centralised database and twenty-four hours maintenance on all days.
(8) For very small aperture terminal communication, network management system (NMS) shall have facility of maintaining link availability status along with signal strength of the nodes.
(9) For very small aperture terminal communication, redundant configuration shall be enabled in network management system.
20. Maintenance and testing. (1) User shall permit in-service diagnostic testing to be executed both locally and from remote network management system locations to facilitate performance trending, efficient diagnosis and corrective resolution of all the interfaces in operation.
(2) The testing equipment and tools shall be maintained to facilitate testing of the interfaces of the communication system at the time of fault and during the course of maintenance.
21. Training. (1) Specialised training shall be provided to the persons manning the centralised monitoring center and to the field support staff to ensure quick fault detection and restoration of the communication system.
(2) Training shall be provided to the maintenance persons on all communication equipment for its operation and maintenance.
22. Adoption of new technologies. Plan shall be made for introduction and adoption of new technologies, with the approval of the appropriate Commission or as per the regulations or pursuant to the reforms programme of the appropriate Government.
23. Standards and codes of practice. (1) The industry best practices and applicable industry standards in respect of the equipment installation and operation and maintenance shall be followed.
(2) Save as otherwise provided in these regulations, the relevant Indian Standards shall be followed to carry out the purpose of these regulations and where relevant Indian Standards are not available, International Standard shall be followed and in the event of any inconsistency, the provisions of these regulations shall prevail:
Provided that whenever an International Standard is followed, necessary corrections or modifications shall be made for prevailing local ambient conditions before adoption of the said Standard.
(3) The effects of wind, storms, floods, lightning, elevation, temperature range, icing, contamination, pollution, earthquakes etc, shall be considered in the design and operation of the connected facilities.
22 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III SEC. 4]
CHAPTER III WIDEBAND NETWORK
24. The communication system shall be formed by a wideband network to support the requirement of power system operation.