TELECOMMUNICATION SERVICES

1.) VOIP (Voice Over IP) Networks - Design, Implementation, Testing & Commissioning of VOIP Products from IP Telephony System (IP PBX Servers worked on Cisco Call Manager, Avaya, Linux Open Platform, Ubuntu, Topex IPBX, Yea star & Grand Stream), IP/ Analog/ Digital Phones, ATA Products, Etc. *For Telephone Exchange / VOIP Operators Installation, Testing & Commissioning of Soft switch, Eane, Media Gateways (IP to PSTN), Announcement Servers. (worked on Veraz Network - Dialogic INC. Topex Soft switch, media Gateways). * Installation & Termination of Cables at MDF (Main Distribution Frame) for Copper and ODF for Fiber Optic Cables

2). WLAN System - Design, Installation, Configuration, Testing & Commissioning of Access Points, Wireless LAN Controllers for use in Mesh topology for Wireless Mobility Extension.

3). Triple Play Services{Voice, Data & Video) - Design, Implementation, Testing& Commissioning of *GPON (Gigabit Passive Optical Networks) & EPON- OLT (Optical Line Terminal Units), ONT {Optical Network Terminal), (Optical Network Unit), VEF (Voice Enhanced frame) for new Residential areas Using Fiber As the backbone for FTTH. Products used M/s. Dasan Networks.

4). FTTH {Fiber To The Home)- Design, Implementation, Testing & Commissioning of Passive Networks *Fiber Optic Cable- Installation in New & Old Routes. Performed Manual Route Survey & GIS survey for direct Buried Routes. Provide CAD Documentation of the Proposed Routes. Excavation, HOD (Horizontal Directional Drilling), Installation of Manholes, Handholes, Ducts (110mm, 40mm), Subducts (25mm, 32mm). Laying of FOC, Installation of ODF(Optical Distribution Frame), Splicing, Termination and Te, Provide the Final As-built of the Cable Route.

5). GSM,4G, LTE Networks and 5G - * Installation & Alignment of 5G, LTE Antennas, RRU & BTS units, Cabling of electrical and Fiber Cable from Antenna to BTS System and Internal Cabling in Shelter Room. *Installation and Alignment of Microwave Antennas *Installation of GSM Gate ways for Mobile or VOIP Operators - GSM to VOIP to Analog Trunk. Installation of 5G Routers.

Solar Power Plant

A.TESTING (AC SIDE)

Testing of all AC electrical equipments like Indoor Switchgear panels (CT, PT, CB, Numerical relays, Aux Relays, Surge Arrestor, ACDB, Dry type Transformer, etc.,). Outdoor switchyard equipments (CT, PT, SF6 CB, Isolator, Earth Switch, Lightning arrestor, Power transformer, Earth pit, NGR, etc.,)

B.TESTING (DC SIDE)

Testing of all DC equipment like HT Cables, Battery bank, Battery chargers, DCDB, DC String testing follows IR Test, Polarity Test, Floating current, Short circuit current, Open circuit voltage, DC Power measurement, Irradiation, Team - perature (Ambient & Normal), IV Curve tracing, Earth resistance, etc.

C. COMMISSIONING

Test all electrical and electronic components of the system before using it. Followthe instructions in the manuals supplied with the components and equipment. Commission and Maintenance works should only be performed by specialized and properly trained personnel. Check the Open Circuit Voltage of every string of modules connected in series with a digital multimeter. The measured overall values should correspond to the sum of the Open Circuit Voltage of the individual modules. Be aware that the measured overall voltage can be lower than expected, due the normal decrease of Open Circuit Voltage of the individual modules, caused by the temperature rising of solar cells or low irradiance. The rated voltage at STC will be found in the nameplate or technical datasheet of the module type used in the PV system. In any case, the measured overall voltage should be never below 20% of the estimated one. Excessively low voltage is typically caused by improper connections at the terminals or defective bypass diodes. Technical Service if the problem cannot be resolved. Once the commissioning has been executed, check the operating current through every series of the PV installation. It can be measured directly by a DC clamp meter. All measurements should be in the same value range, but they may vary from the maximum current measured at STC specified in the datasheet. The measured values are dependent on the solar inverter, but they should be proportional to the solar irradiance present at the moment.

D. MAINTENANCE

We recommends the following maintenance in order to ensure optimum performance of the module Check the electrical and mechanical connections every six months to verify that they are clean, secure and undam - aged; Check that mounting hardware, terminal screws and grounding components are tightly secured with no corrosion Do not touch live parts of cables and connectors If any problem with the system or individual module arises, have them investigated by a competent specialist Check that modules are not shaded by vegetation or any unwanted obstacles Use appropriate safety equipment (insulated tools, insulating gloves, etc.) when handling modules Replacement modules must be the same type of those to be replaced Modules generate high voltage when exposed to sunlight. Please cover the front surface of modules with an opaque non scratch material when repairing. Repairing works must be performed by specialized and properly trained personnel only