Network / BSS Support & Maintenance

 

Inspection of BTS equipment includes

  • Checking whether the main BTS/DBS equipment runs normally, whether the power supply to the equipment is normal, and whether any alarm is raised
  • Calling on hotline to report activities performed on site, including the PM/CM/Parts/Special Services, others.
  • Cleaning Equipment rack, fan, filter, cable etc.

 

Inspection of transmission equipment includes

  • Checking whether the transmission equipment runs normally and there is no active alarm on the system.
  • Checking link alignment, panning & dish bracing adjustment.
  • Cleaning transmission equipment, DDF, ODF, patch cords, equipment fan, equipmentfilter etc
  • Conducting preventive and corrective maintenance of long haul SDH/DWDM system on all long haul sites.
  • Ensuring link budget, compliance with design, critical configurations, upgrades etc. marking and evaluation of the same is governed through procedure described by Operator’s Transmission department.
  • Ensuring NMS visibility of all microwave links installed and coordination with operator’s TXN teams.

 

Inspection of power equipment includes

  • Checking the appearance, connection and temperature of the cable.
  • Checking the contact of the contactor and the switch.
  • Checking the signal indicator and alarms.
  • Cleaning the AC power distribution box.

 

DC system 

  • Checking the alarm indication and display functions.
  • Checking the grounding protection cable.
  • Checking the relay, circuit breaker and fan.
  • Checking the load equalisation.
  • Measuring the potential fall and temperature rise of the DC fuse.
  • Checking the DC output current-limiting protection.
  • Calibrating the set parameters.
  • Checking the lightning protection.
  • Checking the contacts of the switch and the contactor.
  • Checking the automation function and the remote functions.
  • Testing the neutral line current
  • Cleaning the DC devices.

 

Battery

  • Checking whether the connectors are loose or corroded.
  • Checking whether the battery is leaking or deformed.
  • Checking whether any acid mist or liquid escapes.
  • Measuring the end voltage and ambient temperature of each battery.
  • Cleaning the battery surface.
  • Checking the ventilation fans of underground battery banks.
  • Checking the state of the UPS and the AC voltage stabilizer.
  • Performing equalized charging test for the battery which never discharge in the past quarter.
  • Inspection of the functions and performance indices of the monitoring system comprehensively.
  • Measuring the output current of the UPS system, and handle exceptions if any.
  • Measuring the pulse voltage of the DC power supply system.
  • Checking the lightening arrester.
  • Measuring the resistance of the base line (in dry seasons) to ensure a normal value.
  • Measuring the voltage potential of the feeder bus, cable and soft connector.
  • Replacement of faulty batteries with spare available in warehouse.
  • Checking working status of battery cabinet fans.

 

Line Conditioner

  • Checking the output is within range for all 3-Phases and LC is in proper operation.
  • Checking Neutral to Ground is within the limit.
  • Checking fans are working.
  • Checking equipment is clean.
  • Checking surge arrestors are operational.
  • Checking external alarms system.
  • Checking all external alarms are in operational state.
  • Checking NOC verification is done during preventive maintenance visit.

 

Intelligent Controller(IC)

  • Ensuring the IC is operational.
  • Checking if setting has been done as per standard issued by operator.
  • Checking and in case of non-operational, replacement to be done timely.

 

Solar System

  • Checking solar panel cleaning is done properly such that no dust is accumulated on panels and sufficient energy is converted in day light.
  • Checking solar system controller testing and calibration.
  • Conducting health test of solar batteries system.
  • Checking solar system room cleaning.
  • Checking external alarm functionality is proper.
  • Checking Forced Ventilation System.
  • Checking filter cleaning of inlet and outlet is done properly, such that no dust is accumulated in filters and clean air passage is available.
  • FVS Control panel testing, parameter adjustment and calibration.
  • External alarm functionality is proper.