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[[Berkas:T-DSL Modem.jpg|thumb|right|Sebuah jenis Modem DSL Standar]]
'''DSL'''Digital (dari [[bahasa Inggris]]:subscriber line'''Digital Subscriber(disingkat Line''DSL''' ) adalah satu set teknologi yang menyediakan penghantar [[data]] [[digital]] melewati kabel yang digunakan dalam jarak dekat dari jaringan [[telepon]] setempat. Biasanya kecepatan downolad[[unduh]] dari DSL berkisar dari 128 kbitkb/d sampai 24.000 kb/d tergantung dari teknologi DSL tersebut. Kecepatan upload[[unggah]] DSL lebih rendah dari downloadunduh untukversi [[ADSL]] dan sama cepat untuk [[SDSL]].
== Peralatan ==
== Protokol dan konfigurasi ==
Banyak teknologi DSL menggunakan sebuah lapisan [[Asynchronousasynchronous Transfertransfer Mode|ATMmode]] agar dapat beradaptasi dengan sejumlah teknologi yang berbeda.
Implementasi DSL dapat menciptakan jaringan [[bridgingjembatan (jaringan)|jembatan]] atau [[routing|routedpenghalaan]]. Dalam konfigurasi jembatan jaringan, kelompok komputer pengguna terhubungkan ke subnet tunggal. Implementasi awal menggunakan [[DHCP]] untuk menyediakan detail jaringan seperti [[alamat IP]] kepada peralatan pengguna, dengan [[authentication]]otentikasi melalui [[alamat MAC]] atau memberikan nama host. Kemudian implementasi seringkali menggunakan [[Point-to-point Protocol|PPP]] melalui [[Ethernet]] atau ATMasynchronous transfer mode ([[Point-to-point Protocol over Ethernet|PPPoE]] atau [[Point-to-point over ATM|PPPoA]]).
DSL juga memiliki [[rasio contention]]pembagian jaringan data yang layak dipertimbangkan pada saat memilih teknologi [[jalur lebar]].
== Teknologi DSL ==
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The line length limitations from telephone exchange to subscriber are more restrictive for higher data transmission rates. Technologies such as [[VDSL]] provide very high speed, short-range links as a method of delivering "[[Triple play (telecommunications)|triple play]]" services (typically implemented in [[fiber to the curb]] network architectures).-->
Contoh teknologi DSL (kadangkala disebut '''xDSL''') termasuk:
* High-bit-rate Digital Subscriber Line (HDSL), covered in this article
* [[Symmetric Digital Subscriber Line]] (SDSL), a standardised version of HDSL
* [[Asymmetric Digital Subscriber Line]] (ADSL), a version of DSL with a slower upload speed
* [[Rate-Adaptive Digital Subscriber Line]] (RADSL)
* [[Very-high-bit-rate Digital Subscriber Line]] (VDSL)
* [[Very-high-bit-rate Digital Subscriber Line 2]] (VDSL2), an improved version of VDSL
* [[G. Symmetric High-speed Digital Subscriber Line]] (G.SHDSL), a standardised replacement for early proprietary SDSL by the International Telecommunication Union Telecommunication Standardization Sector
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==Transmission methods==
Transmission methods vary by market, region, carrier, and equipment.
* CAP: [[Carrierless Amplitude Phase Modulation]] - deprecated in 1996
* DMT: [[discrete multitone modulation]], otherwise known as OFDM
* OFDM: [[Orthogonal frequency-division multiplexing]]
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== Lihat pula ==
* [[Akses internet jalurJalur lebar]]
* [[ADSL|Asymmetric Digitaldigital Subscribersubscriber Lineline]] (ADSL)
* [[Carrierless Amplitudeamplitude Phasephase Modulationmodulation]] (CAP)
* [[Digital subscriber line access multiplexer]] (DSLAM)
* [[DSL di dunia]]
* [[Integrated Services Digital Network|ISDN]]
* [[Modem]]
* [[Orthogonal frequency-division multiplexing]] (OFDM)
* [[Plain old telephone service|POTS]]
* [[Router]]
* [[Triple play (telekomunikasi)]]
* [[Wi-Fi]].
== Pranala luar ==
* {{en}} [http://www.iol.unh.edu/training/dsl/ The UNH-IOL DSL Knowledgebase (advanced tutorials)]
* {{en}} [http://www.tutorial-reports.com/networking/broadband/ DSL Tutorial]
* {{en}} [http://www.uk-bug.net The UK Broadband Usergroup]
* {{en}} [http://tldp.org/HOWTO/DSL-HOWTO/ DSL HOWTO for Linux]
* [http://www.howstuffworks.com/ Howstuffworks.com] - [http://electronics.howstuffworks.com/dsl.htm "How DSL Works"]
* {{en}} [http://tldpwww.dslforum.org/HOWTO/DSL-HOWTO/ DSL HOWTOForum, a promotional trade organization for Linuxthe ADSL industry]
* [http://www.t1.org/t1e1/_e14home.htm ANSI Working Group T1E1.4, a standards group for DSL]
* [http://www.dslforum.org/ DSL Forum, a promotional trade organization for the ADSL industry]
* [http://www.http://www.broadband-essentials.co.uk/ Broadband Essentials, UK DSL broadband price comparison]
{{Akses internet}}
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