INFRASTRUCTURE DEVELOPMENT, TELECOM & SUBMARINE

TELECOM ( FIBER OPTIC CABLE NETWORK LAYING) SUBMARINE

The Company has rich experience in laying Optical Fiber Cable (OFC) and Optical Power Ground Wire (OPGW) & SUBMARINE cables on turnkey basis.

SIP Underground Fiber Optic Cable Installation expertise and methods adopted for successful fool proof installations.

Our Division is actively involved in the execution of OFC Based Backbone and Backhaul Networks. We have successfully carried out OFC projects all over India. Our customers include service providers such as Vodafone,Idea Cellular Limited, Tata Communications & Power Grid Corporation of India Limited, GAIL India Limited, RailTel Corporation of India Limited.

Direct burial installations

Direct burial installations are most common for long cross-country installations. The cables are plowed in or buried in a trench; the installation process can be very quick. The most common cables used for direct burial are steel armored outdoor fiber cables.

Underground Duct installation

Fiber optic cables can also be pulled through underground ducts, which protect the cables from harsh environment. Underground duct installation also provides opportunity for future expansion without the need to dig. This is the most common practice in urban areas. Another benefit is that fiber cables without armor can be used which makes the installation even easier.

CABLE BURIAL TECHNIQES

Plowed under

Plowing in a fiber cable is faster than trenched. But this process has to be carefully monitored to prevent from damaging the cable.

Trenched

The fiber cable can also be trenched. This process is slower than plowing in; however, it allows a much more controlled cable installation. Trenches can be dug by hand or by machine.

Directional boring

Directional boring technique is used where the surface cannot be worked on such as high, railway crossings, etc. Instead, a boring machine is used to bore a several inches diameter hole underneath the surface, a duct is pulling through the hole and then fiber cables pulled into the duct.

PREPARATION BEFORE UNDERGROUND CABLE INSTALLATION

Obtain proper right-of-way permits
Identify existing underground utilities such as buried cables, pipes
Investigate the soil condition in order to determine the installation depth, whether duct should be used, the type of fiber cable should be used and plowing equipment needed

PLANNING AND ENGINEERING

- Traffic analysis / traffic engineering.
- Firming up network architecture.
- Network specification and sourcing
- Schematic diagrams.
- Site Engineering
- Site surveys.
- Route surveys.
- Installation plans and schedules.
- Permits and right of way for cable routes.
- Site preparation.

OFC Works

- Blowing / pulling of cables.
- OFC cable splicing. .
- Cable termination and jointing.
- Cable testing from both directions.
- Provisional and final acceptance testing

DOCUMENTATION & OPERATION MANTANANCE

- Preparation of as-built drawings.
- We have the expertise and experience of operation and maintenance (O & M) of OFC Based long distance networks.
- Patrolling of OF cable routes.
- Maintenance of utility system.
- Corrective maintenance of faults in the various subsystem
- Spare Management

Supply and Warehousing for Equipment Material

- Test instruments.
- Digital and fiber distribution frames.
- Joint enclosures and terminal boxes.
- Inspection.
- Transportation

OUTSIDE PLANT MANAGEMENT SYSTEM

Outside Plant (OSP) network also at times referred to as the last mile solution is an important component of a telecom network. It connects the subscribers’ premises with the node/exchange. Mehta Infocom Private Limited has developed an outstanding expertise in planning, engineering and execution of OSP projects. The types of services rendered are:.

Design, Planning & Engineering of OSP Network. Primary, Secondary & Distribution Network.
ROW Permission.
Procurement of Pipes, OF Cables, Cabinets, DPs etc.
Trenching and Tenchless (HDD, Mouling) way of laying of pipes, installation of manholes.
Cable pulling, jointing, termination and testing.
An important feature of outside plant is to have information available about every subscriber cable pair at a centralized place. This enables to check the feasibility of providing new lines especially on the congested routes and to attend to a line fault in case of a line fault on a cable pair.

INFRASTRUCTURE DEVELOPMENT

We provide complete range of infrastructure development and civil services related to Telecom Network Projects.
Wireline Projcets
Site surveys, suitability reports and accordingly site selection.
Soil investigation, foundation design.
Installation of Power Supply System (includes rectifier, battery banks, DG sets etc.)
Route survey, route selection and preparation of detail survey drawing.
Trenching in all type of soil (Normal, Soft Rock & Hard Rock).
HDPE pipe laying, installation of manholes, route markers etc.

SUBMARINE CABLES LAYING

Submarine cables are laid down by using specially modified ships (sometimes even purpose built ships) that carry the submarine cable on board and slowly lay it out on the seabed as per the charts/plans given by the cable operator. The ships can carry with them up to 2,000 kilometers length of cable.
Depending on the equipment on-board the cable-ship, the type of plough used, the sea conditions and the ocean-bed where the cable is being laid-down, cable ships can do anywhere from 100-150km of cable laying per day. Newer ships and ploughs now do about 200 km of cable laying per day.
The ships are commonly referred to as cable-layers or cable-ships.

ship cables lowered the sea

CABLE DISSECTION

Depending on where the cable is being laid, it might differ in thickness. Thinner cable systems are used for shallower ocean depths, whilst thicker cables are used for deep ocean beds, typically up to 20,000 feet. Such cables are able to withstand pressure from 12,000 lbs/square-inch to 22,000 lbs/square-inch (this is necessary because of the extreme pressures in the deep ocean beds.

Submarine cable laying process starts from the Landing Station, where a long cable section is attached (connected) to the landing-point and then extended out to a few miles in the sea. This end is connected to the cable on the ship and then the ship starts its cable laying process (a simple representation of this process