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DECT A wireless standard based on Time Division Multiple Access standard used by Wireless Local Loop given by ETSI. |
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ETSI European Telecommunications standards institute. |
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DIU DECT Interface Unit – The brain of the DECLoop system, which can work in both a transparent mode (extension of network coverage) and stand alone exchange mode. |
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RBS Relay Base Station – A repeater used for extension of the signal to the subscribers premises incase they are located far from the Base Stations.(A far as 25 kms). |
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BSD Base Station Distributor – Sometimes, the base stations need not be co-located with the DIU or be near say within 4 km radius of it. In this case, the extension from the DIU to the CBS is done using the BSD. This extension could be over Microwave, Optical Fiber or Copper lines. |
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CBS Compact Base Station – The CBS are the sub-system of the DECLoop that interacts with the subscribers viz the customer premises equipment or the Wallsets. |
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WS Wallsets are the CPE (Customer Premises equipment) which are connected to the Phone instrument. Provide voice connectivity. |
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WS-IP Wallset-Internet Protocol provides an interface at the customer premises for both voice and data services, each of which can be provided individually or simultaneously. |
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MWS Multi wallset provides connection to four phone instruments at the same time. |
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OMC Operations and Maintenance console provides a virtual look at the status of each card in a DIU. It has a hot stand by protection. |
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EMS Element Management System provides a unique feature of managing up to 100 DIU together. |
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IP Internet Protocol – The protocol on which the whole internet is based. |
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CPE Customer Premises Equipment |
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PSTN Public Switched Telephone network |
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TDMA Time Division Multiple Access – With reference to radio, a Multiple access scenario where multiple transmitters share the same frequency but different time slots thereby providing a very efficient communication system since frequency is a fixed commodity and difficult to reuse at short distances. |
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ADPCM Adaptive Differential Pulse Code Modulation – A compression technique that encodes only the difference between sequential samples |
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ITU International Telecommunications Union – An International Telecommunications standardization body. |
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E1 Wide-area digital transmission scheme used predominantly in Europe that carries data at a rate of 2.048 Mbps. |
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GFSK Gaussian Frequency Shift Keying |
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G3 Fax G3 is one of the communication procedures for FAX standardized by ITU: International Telecommunication Union. At present, it is the most popularized communication procedure. |
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G.726 G.726 is an implementation of ITU-T G.726 standard for conversion linear or A-law or µ-law PCM to and from a 40, 32, 24 or 16 kbit/s channel. The specification uses Adaptive Differential Pulse Code Modulation (ADPCM) technique which is applicable to all waveforms, high-quality audio, modem data etc. |
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PPP Point-to-Point Protocol. This protocol is a way to connect your computer to the Internet over telephone lines. PPP is replacing an older protocol, SLIP, as it is more stable and has more error-checking features |
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SNMP An abbreviation for Simple Network Management Protocol, an Internet standard that defines methods for remotely managing active network components such as hubs, routers, and bridges. |
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SIR Signal to Interference Ratio - A ratio between the wanted signal power in the channel and the interference in the channel |
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GOS Grade of Service - Grade of Service defines the quality of a telephone service in terms of a user receiving a network busy signal. |
