DWDM technology all set to uplift telecom scenario

By : |November 22, 2001 0



HYDERABAD: Bharat Sanchar Nigam Ltd. is all set to introduce dense wavelength
division multiplexing (DWDM) in the state of AP for faster and easier
telecommunication. "In the first phase of deployment, which has already
begun, we are going to deploy the DWDM technology to connect Vijaywada,
Visakhapatnam and Hyderabad with major centers in the country. Once the system
is in place as many as nine lakh calls can be made simultaneously," said KM
Doraiswamy, General Manager, Southern Telecom projects for BSNL.

Once the technology is in place the lines would no longer be busy and the
connection will be a lot faster and easier. Dense wavelength division
multiplexing is a fiber-optic transmission technique that employs light
wavelengths to transmit data parallel-by-bit or serial-by-character.

A technology like DWDM enables service providers to accommodate consumer
demand for ever-increasing amounts of bandwidth. DWDM is discussed as a crucial
component of optical networks that allows the transmission of e-mail, video,
multimedia, data, and voice–carried in Internet protocol (IP), asynchronous
transfer mode (ATM), and synchronous optical network/synchronous digital
hierarchy (SONET/SDH), respectively, over the optical layer.

The technology is expected to thrive in carrier applications, as the optical
network becomes commonplace. Interexchange Carriers (IXCs) and Incumbent Local
Exchange Carriers (ILECs) will use DWDM technology to satisfy the growing amount
of network traffic attributed to ISPs.

As the future of carrier networks continues down the light and fiber path,
next generation products and technology will continue to push towards a pure
optical network, in which DWDM systems will maintain a long product life.

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