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Hanthana Linux is a Linux distribution based on Fedora, distributed as free and open source software. [1] It is specially designed to cater to the needs of Sri Lankan computer users who are unable to access the Internet frequently, with many most-wanted applications built in. [2] Hanthana is developed by the Sri Lanka–based Hanthana Community ...
Two-binary, one-quaternary (2B1Q) is a line code used in the U interface of the Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) and the high-bit-rate digital subscriber line (HDSL). [1] 2B1Q is a four-level pulse-amplitude modulation (PAM-4) scheme without redundancy, mapping two bits (2B) into one quaternary symbol (1Q).
the line-coded signal (the baseband signal) undergoes further pulse shaping (to reduce its frequency bandwidth) and then is modulated (to shift its frequency) to create an RF signal that can be sent through free space. the line-coded signal can be used to turn on and off a light source in free-space optical communication, most commonly used in ...
ISDN digital subscriber line (IDSL) is a cross between ISDN and xDSL. It is like ISDN in that it uses a single-wire pair to transmit full-duplex data at 128 kbit/s and at distances of up to RRD range [definition needed]. Like ISDN, IDSL uses a 2B1Q line code to enable transparent operation through the ISDN U interface.
Using DMT is useful since it allows the communications equipment (user modem/router and exchange/DSLAM) to select only bins which are usable on the line thus effectively obtaining the best overall bit rate from the line at any given moment in time. With COFDM, a combined signal containing many frequencies (for each bin) is transmitted down the ...
The binary signal is encoded using rectangular pulse-amplitude modulation with polar return-to-zero code. Return-to-zero (RZ or RTZ) describes a line code used in telecommunications signals in which the signal drops (returns) to zero between pulses.
Sri Lanka's cabinet approved issuing free tourist visas to visitors from 35 countries including China, India and Russia, a top official said on Thursday, in an effort to boost tourism and help ...
Digital Signal 1 (DS1, sometimes DS-1) is a T-carrier signaling scheme devised by Bell Labs. [1] DS1 is the primary digital telephone standard used in the United States , Canada and Japan and is able to transmit up to 24 multiplexed voice and data calls over telephone lines.
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