DSL modem

ADSL modem or DSL modem is a device used to connect a single computer or router to a DSL phone line, in order to use an ADSL service. Like other modems it is a type of transceiver. It is also called a DSL Transceiver or ATU-R. The acronym NTBBA (network termination broad band adapter, network termination broad band access) is also common in some countries.

Some ADSL modems also manage the connection and sharing of the ADSL service with a group of machines: in this case, the unit is termed a DSL router or residential gateway. DSL Routers have a functional block which performs framing, while other functional blocks perform Asynchronous Transfer Mode Segmentation and Reassembly, IEEE 802.1D bridging and/or IP routing. Typical user interfaces are Ethernet and USB. Although an ADSL modem working as a bridge doesn't need an IP address, it may have one assigned for management purposes.

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ADSL = Asymmetric Digital Subscriber Line

Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. It does this by utilizing frequencies that are not used by a voice telephone call. A splitter - or microfilter - allows a single telephone connection to be used for both ADSL service and voice calls at the same time. Because phone lines vary in quality and were not originally engineered with DSL in mind, it can generally only be used over short distances, typically less than 3mi (5.5 km) [William Stallings' book].

At the telephone exchange the line generally terminates at a DSLAM where another frequency splitter separates the voice band signal for the conventional phone network. Data carried by the ADSL is typically routed over the telephone company's data network and eventually reaches a conventional internet network. In the UK under British Telecom the data network in question is its ATM network which in turn sends it to its IP network IP Colossus.

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Telkom Speedy Upto 1024kbps

Dalam rangka memperingati 100 tahun hari Kebangkitan Nasional, Telkom mempersembahkan kecepatan akses layanan Speedy hingga 1 Mbps downstream dan 128 kbps upstream untuk bangsa Indonesia.

Peningkatan kecepatan ini telah dilakukan di sebagian lokasi di 59 kota dan akan terus diperluas hingga ke seluruh area cakupan layanan Speedy di lebih dari 220 kota di seluruh Indonesia.

Pelanggan Speedy dapat menikmati peningkatan kecepatan ini tanpa dikenai tambahan biaya apa pun.

Untuk dapat melihat daftar lokasi yang sudah dapat menikmati kecepatan Speedy up to 1 Mbps klik di sini.

Untuk detail informasi lokasi hubungi 147.

Telkom Speedy

APA ITU SPEEDY

Speedy adalah produk Layanan internet access end-to-end dari PT. TELKOM dengan basis teknologi Asymetric Digital Subscriber Line (ADSL), yang dapat menyalurkan data dan suara secara simultan melalui satu saluran telepon biasa dengan kecepatan yang dijaminkan sesuai dengan paket layanan yang diluncurkan dari modem sampai BRAS (Broadband Remote Access Server)

PAKET SPEEDY (berlaku mulai 1 April 2007)

Paket Layanan	Speedy Office	Speedy Warnet *	Speedy Personal	Speedy Professional	Speedy Time Based **
PSB	Rp 75.000	Rp 75.000	Rp 75.000	Rp 75.000	Rp 75.000
Abonemen	Rp 750.000	Rp 1.750.000	Rp 200.000	Rp 400.000	Rp 200.000
Kuota	Unlimited	Unlimited	1000 MB/bln	3000 MB/bln	50 Jam/bln
Kelebihan Pemakaian	No	No	Rp 500/MB	Rp 500/MB	Rp 25/menit

* Khusus Speedy Warnet, harga baru berlaku mulai 1 April 2007 sampai 30 September 2007

** Klik disini untuk informasi lebih lanjut tentang Paket Speedy Time Bases

Perpanjangan program Pricing Speedy Un-limited warnet

Program Pricing Speedy Un-Limited Warnet diperpanjang sampai dengan tanggal 30 Juni 2008 (perpanjangan 3 bulan). Untuk informasi lebih lanjut Anda dapat menghubungi 147