CorDECT
Encyclopedia
corDECT is a wireless local loop
standard developed in India
by IIT Madras and Midas Communications (www.midascomm.com) at Chennai
, under leadership of Prof Ashok Jhunjhunwala
, based on the DECT digital
cordless phone standard.
Wireless Option, which has extremely low capital costs and is ideal for small start ups to scale, as well as for sparse rural
areas. It is very suitable for ICT4D projects and India has one such organization, n-Logue Communications that has aptly done this.
The full form of DECT is Digital Enhanced Cordless Telecommunications
, which is useful in designing small capacity WLL
(wireless in local loop) systems. These systems are operative only on LOS
Conditions and are very much affected by weather conditions.
System is designed for rural and sub urban areas where subscriber density is medium or low. "corDECT" system provides simultaneous voice and Internet access.
Following are the main parts of the system.
DECT Interface Unit (DIU)
This is a 1000 line exchange provides E1 interface to the PSTN. This can cater up to 20 base stations. These base stations are interfaced through ISDN link which carries signals and power feed for the base stations even up to 3 km.
Compact Base Station (CBS)
This is the radio fixed part of the DECT wireless local loop. CBSs are typically mounted on a tower top which can cater up to 50 subscribers with 0.1 erlang traffic.
Base Station Distributor (BSD)
This is a traffic aggregator used to extend the range of the wireless local-loop where 4 CBS can be connected to this.
Relay Base Station (RBS)
This another technique used to extend the range of the corDECT wireless local loop up to 25 km by a radio chain.
Fixed Remote Station (FRS)
This is the subscriber-end equipment used the corDECT wireless local loop which provides standard telephone instrument and Internet access up to 70kbit/s through Ethernet port.
The new generation corDECT technology is called Broadband corDECT which supports provides broadband Internet access over wireless local loop.
by venkatesh and vijay kodad
Wireless local loop
Wireless local loop , is a term for the use of a wireless communications link as the "last mile / first mile" connection for delivering plain old telephone service and/or broadband Internet to telecommunications customers....
standard developed in India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...
by IIT Madras and Midas Communications (www.midascomm.com) at Chennai
Chennai
Chennai , formerly known as Madras or Madarasapatinam , is the capital city of the Indian state of Tamil Nadu, located on the Coromandel Coast off the Bay of Bengal. Chennai is the fourth most populous metropolitan area and the sixth most populous city in India...
, under leadership of Prof Ashok Jhunjhunwala
Ashok Jhunjhunwala
Dr. Ashok Jhunjhunwala is a Professor in the Department of Electrical Engineering, Indian Institute of Technology Madras at Chennai, India and has served as the departmental Chair. He received his B.Tech degree from IIT Kanpur, and his MS and Ph.D degrees from the University of Maine. From 1979...
, based on the DECT digital
Digital
A digital system is a data technology that uses discrete values. By contrast, non-digital systems use a continuous range of values to represent information...
cordless phone standard.
Overview
The technology is a FixedFixed
Fixed may refer to:* Fixed , EP by Nine Inch Nails* Fixed , a collection of monospace bitmap fonts that is distributed with the X Window System* Fixed, subjected to neutering...
Wireless Option, which has extremely low capital costs and is ideal for small start ups to scale, as well as for sparse rural
Rural
Rural areas or the country or countryside are areas that are not urbanized, though when large areas are described, country towns and smaller cities will be included. They have a low population density, and typically much of the land is devoted to agriculture...
areas. It is very suitable for ICT4D projects and India has one such organization, n-Logue Communications that has aptly done this.
The full form of DECT is Digital Enhanced Cordless Telecommunications
Digital Enhanced Cordless Telecommunications
Digital Enhanced Cordless Telecommunications , usually known by the acronym DECT, is a digital communication standard, which is primarily used for creating cordless phone systems...
, which is useful in designing small capacity WLL
Wireless local loop
Wireless local loop , is a term for the use of a wireless communications link as the "last mile / first mile" connection for delivering plain old telephone service and/or broadband Internet to telecommunications customers....
(wireless in local loop) systems. These systems are operative only on LOS
Line-of-sight propagation
Line-of-sight propagation refers to electro-magnetic radiation or acoustic wave propagation. Electromagnetic transmission includes light emissions traveling in a straight line...
Conditions and are very much affected by weather conditions.
System is designed for rural and sub urban areas where subscriber density is medium or low. "corDECT" system provides simultaneous voice and Internet access.
Following are the main parts of the system.
DECT Interface Unit (DIU)
This is a 1000 line exchange provides E1 interface to the PSTN. This can cater up to 20 base stations. These base stations are interfaced through ISDN link which carries signals and power feed for the base stations even up to 3 km.
Compact Base Station (CBS)
This is the radio fixed part of the DECT wireless local loop. CBSs are typically mounted on a tower top which can cater up to 50 subscribers with 0.1 erlang traffic.
Base Station Distributor (BSD)
This is a traffic aggregator used to extend the range of the wireless local-loop where 4 CBS can be connected to this.
Relay Base Station (RBS)
This another technique used to extend the range of the corDECT wireless local loop up to 25 km by a radio chain.
Fixed Remote Station (FRS)
This is the subscriber-end equipment used the corDECT wireless local loop which provides standard telephone instrument and Internet access up to 70kbit/s through Ethernet port.
The new generation corDECT technology is called Broadband corDECT which supports provides broadband Internet access over wireless local loop.
See also
- PAS
- Rahman, S. & Pipattanasomporn, M. (2002). Alternate technologies for telecommunications and internet access in remote locations. In Proceedings of the Third Mediterranean Conference and Exhibition on Power Generation, Transmission, Distribution and Energy Conversion, November 2002, Athens Greece. http://www.cimap.vt.edu/pubs/Medcon-Greece02.pdf
by venkatesh and vijay kodad