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<blockquote data-quote="Ali" data-source="post: 97902" data-attributes="member: 1"><p style="text-align: left">ADSL</p> <p style="text-align: left">For conventional ADSL, downstream rates start at 128 <a href="http://www.forums.bazicenter.com/wiki/Kbit/s">kbit/s</a> (though a minimum offering of 512 <a href="http://www.forums.bazicenter.com/wiki/Kbit/s">kbit/s</a> is more common) and typically reach 8 <a href="http://www.forums.bazicenter.com/wiki/Mbit/s">Mbit/s</a> within 1.5 km (5000 ft) of the <a href="http://www.forums.bazicenter.com/wiki/DSLAM">DSLAM</a> equipped central office or remote terminal. Upstream rates start at 64 <a href="http://www.forums.bazicenter.com/wiki/Kbit/s">kbit/s</a> and typically reach 128 <a href="http://www.forums.bazicenter.com/wiki/Kbit/s">kbit/s</a> or 256 <a href="http://www.forums.bazicenter.com/wiki/Kbit/s">kbit/s</a> but can go as high as 1024 <a href="http://www.forums.bazicenter.com/wiki/Kbit/s">kbit/s</a>. The name <a href="http://www.forums.bazicenter.com/wiki/ADSL_Lite">ADSL Lite</a> is sometimes used for the slower versions</p> <p style="text-align: left"></p> <p style="text-align: left"></p> <p style="text-align: left">ADSL2</p> <p style="text-align: left">A newer variant called ADSL2 provides higher downstream rates of up to 12 <a href="http://www.forums.bazicenter.com/wiki/Mbit/s">Mbit/s</a> for spans of less than 2.5 km (8000 ft). More flexible framing and error correction configurations are responsible for these increased speeds. ADSL2+, also referred to as <a href="http://www.forums.bazicenter.com/wiki/ITU_G.992.5">ITU G.992.5</a>, boosts these rates to up to 24 <a href="http://www.forums.bazicenter.com/wiki/Mbit/s">Mbit/s</a> for spans of less than 1.5 km (5000 feet) by doubling the downstream spectrum upper limit to 2.2<a href="http://www.forums.bazicenter.com/wiki/MHz">MHz</a>. ADSL2/2+ also offer seamless bonding options, allowing lines with higher attenuation or lower <a href="http://www.forums.bazicenter.com/wiki/Signal-to-noise_ratio">Signal to Noise Ratio</a>(SNR) to be bonded together to achieve theoretically the sum total of the number of lines (i.e., up to 50 <a href="http://www.forums.bazicenter.com/wiki/Mbit/s">Mbit/s</a> for two lines, etc.), as well as options in power management and seamless <a href="http://www.forums.bazicenter.com/wiki/Rate-Adaptive_Digital_Subscriber_Line">rate adaptation</a> — changing the data rate used without requiring to resynchronize</p> <p style="text-align: left"></p> <p style="text-align: left"><a href="http://en.wikipedia.org/wiki/Adsl">http://en.wikipedia.org/wiki/Adsl</a></p> <p style="text-align: left"></p><p style="text-align: right">فکر میکنم این 2 تا متن کاملا گویا باشه </p> <p style="text-align: right">دلایل مضحک بودن این حرف که adsl2 ارائه میشه کاملا مشخصه</p> <p style="text-align: right"></p> <p style="text-align: right"></p> <p style="text-align: right"></p> </p></blockquote><p></p>
[QUOTE="Ali, post: 97902, member: 1"] [LEFT]ADSL For conventional ADSL, downstream rates start at 128 [URL="http://www.forums.bazicenter.com/wiki/Kbit/s"]kbit/s[/URL] (though a minimum offering of 512 [URL="http://www.forums.bazicenter.com/wiki/Kbit/s"]kbit/s[/URL] is more common) and typically reach 8 [URL="http://www.forums.bazicenter.com/wiki/Mbit/s"]Mbit/s[/URL] within 1.5 km (5000 ft) of the [URL="http://www.forums.bazicenter.com/wiki/DSLAM"]DSLAM[/URL] equipped central office or remote terminal. Upstream rates start at 64 [URL="http://www.forums.bazicenter.com/wiki/Kbit/s"]kbit/s[/URL] and typically reach 128 [URL="http://www.forums.bazicenter.com/wiki/Kbit/s"]kbit/s[/URL] or 256 [URL="http://www.forums.bazicenter.com/wiki/Kbit/s"]kbit/s[/URL] but can go as high as 1024 [URL="http://www.forums.bazicenter.com/wiki/Kbit/s"]kbit/s[/URL]. The name [URL="http://www.forums.bazicenter.com/wiki/ADSL_Lite"]ADSL Lite[/URL] is sometimes used for the slower versions ADSL2 A newer variant called ADSL2 provides higher downstream rates of up to 12 [URL="http://www.forums.bazicenter.com/wiki/Mbit/s"]Mbit/s[/URL] for spans of less than 2.5 km (8000 ft). More flexible framing and error correction configurations are responsible for these increased speeds. ADSL2+, also referred to as [URL="http://www.forums.bazicenter.com/wiki/ITU_G.992.5"]ITU G.992.5[/URL], boosts these rates to up to 24 [URL="http://www.forums.bazicenter.com/wiki/Mbit/s"]Mbit/s[/URL] for spans of less than 1.5 km (5000 feet) by doubling the downstream spectrum upper limit to 2.2[URL="http://www.forums.bazicenter.com/wiki/MHz"]MHz[/URL]. ADSL2/2+ also offer seamless bonding options, allowing lines with higher attenuation or lower [URL="http://www.forums.bazicenter.com/wiki/Signal-to-noise_ratio"]Signal to Noise Ratio[/URL](SNR) to be bonded together to achieve theoretically the sum total of the number of lines (i.e., up to 50 [URL="http://www.forums.bazicenter.com/wiki/Mbit/s"]Mbit/s[/URL] for two lines, etc.), as well as options in power management and seamless [URL="http://www.forums.bazicenter.com/wiki/Rate-Adaptive_Digital_Subscriber_Line"]rate adaptation[/URL] — changing the data rate used without requiring to resynchronize [URL]http://en.wikipedia.org/wiki/Adsl[/URL] [RIGHT]فکر میکنم این 2 تا متن کاملا گویا باشه دلایل مضحک بودن این حرف که adsl2 ارائه میشه کاملا مشخصه [/RIGHT] [/LEFT] [/QUOTE]
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