06-10-2012, 03:53 PM
FIBCOM INDIA LIMITED, GURGAON
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ABOUT FIBCOM
FIBCOM is a part of telecom ventures of the Suri group and its technical collaboration with Tellabs Denmark US .This Company was established in 1994 and is leader in optical transmission products (SDH / DWDM), integrated network solutions and telecom infrastructure development projects. One of the first manufacturers in India to set up a local production unit for SDH and DWDM fibre optic based products.
The Fibcom Advantage...
Fibcom has to its credit several achievements; worth mentioning are:
• National Award for Excellence in Professional Electronics 2001-02
• First company to deliver optical TX equipments in India with the largest customer base
• Largest customer base in its arena
• Number one SDH vendor in BSNL & Railways
• Largest SDH installed base of over 30,000 nodes
• Wide experience on turnkey projects
• Provided system/network solutions to all major telecom operators in India
• Comprehensive infrastructure includes fully automated SMT assembly line and a variety of ATE, which use world-class test instruments.
Certifications...
Hold the following certifications/approvals, which validate the quality products and services we offer:
• An ISO 9001: 2000 certified company
• Manufacturing equipment as per Tellabs standards; infrastructure approval from BSNL QA/TEC.Milestones Achieved…
Since our inception in 1994, we have created a record with our sphere of activities. Here is a list of the same:
• 1994-1997--Supplying of equipments
• 1999--Implementation of turnkey projects
• 2002--Entry into software services
• 2004--Development of full R&D services
• 2005--Acquired by Suri Group; relationship with Tellabs, Denmark strengthened; technology agreement signed; installation and commissioning of turnkey projects; opening of R&D centre for research aimed at customer satisfaction; quality policy; production of next generation SDH products
• 2006-- Expansion to other major cities of India
• 2007--Major projects from Reliance, DMRC, BPL, Mumbai, and more.
Manpower…
The driving force behind the success of Fibcom is its team of highly motivated and well-trained workforce comprising of engineers, professionals, sales and marketing executives, skilled workers, amongst others who work in cooperation towards the fulfillment of the company's set goals. The company focuses on continuous enhancement of its personnel
through regular training sessions.
Infrastructure...
Fibcom is equipped with the most advanced manufacturing equipment, R&D unit, and testing systems for the production of world class products. A state of the art design and development test tools facilitate manufacture of quality products as per national and international standards. Our equipments enable smooth documentation, project management, circuit & layout design, data conversion, test development, embedded software development, etc. as per customer of the machineries include high precision SMT assembly line, automatic optical inspection machine, automatic testing equipment, computing & communication equipment, etc.
FIBCOM CREDENTIALS
CredentFibcom is a manufacturer of optical fiber communication equipment (cards, subracks, racks, etc). Before implanting these cards into the field various parameters are checked keeping the prevalent conditions of the field such as temperature, continuous working, stability, detection of alarms if an error occurs and thereafter repairing the card. Thus testing and repairing plays an important role for the proper functioning of these cards in the field.
However before specifying the details of testing, a brief introduction about the assembly process will be given.
The marketing department attains tenders from customers such as reliance, idea, vodaphone, tulip, GAIL, etc.
According to the customer requirements, the Production Planning & Control Department plans and prepares a sheet specifying the various communication equipments required. The department lays out a production plan on weekly and monthly basis. It handles work order and allots serial numbers to the boards being manufactured. The availability of raw material is first verified. If the required amount is more than that available in storage, raw material is then purchased from the supplier. The raw material purchased is then transferred to the Incoming Goods Inspection(IGI) department. In this department, goods purchased are qualitatively analyzed. If their quality is below acceptance standards then they are rejected at this stage itself. After which the goods are transferred to the storage.
History :
Today it is difficult to imagine life without telephone. World wide there are some 2000 million telephone connections in use and the no. of internet users are increasing day by day. So right from the start, network providers have been facing difficulties due to the increasing no. of users and the telephone traffic.
This lead to the development of various methods and technologies to meet both the market needs and to sustain economic growth.
So, this resulted in the introduction of FDM (frequency division multiplexing) system, which enabled several telephone lines to be transmitted simultaneously over single cable using modulation with different carrier frequency.
In 1960, with the advent of semiconductor circuits, new type of transmission method called PCM ( Pulse code modulation ) made an appearance. It allows multiple use of single lines by means of Time Domain Multiplexing.(TDM).
The analog signal is sampled at a bandwidth of 3.1 KHz, quantized and encoded and then transmitted at a bit rate of 64 Kbps.
A transmission rate of 2Mbps results when 30 such channels are multiplexed into a frame. This is called “Primary Rate” used through out the world. Only USA, Canada, and Japan use a primary rate of 1.54 Mbps formed by combining 24 channels.
LIMITATION OF PDH :
To get 64 Kbps signal out of the multiplexed signal, whole signal must be demultiplexed into lowest level. This will cost high as the signal must be multiplexed back into the preceeding level.
The transmission rate for every input in the same multiplexer must be roughly taken similarly (this means e.g. when multiplexing E1 signals into an E2 signal). This causes the inconvenience in multiplexing when the difference in the local clock and the clock in each different input makes the bits randomly overlapping. This harness is handled by using fill bits. The inconvenience using this method is that every fill bit requires an address making it rather wearisome.
3. PDH is also a point-to-point hierarchy where there has to be a physical connection for each connection and therefore there is no space for the management of the system. This makes the connections between networks complex when one is using several different local area networks.
4 The network management and control is very limited in PDH networks because there are no free bits in the frame.
5 Another problem are also the vendors making network elements by their own standards. This means that the interaction between networks of different vendors is impossible.