DSL and the International Market ISOM 591 April 24, 2000

DSL and the International Market ISOM 591 April 24, 2000

DSL: Brief Overview Type Description Data rate Application (downstream upstream) ADSL Asymmetric 1.544 Mb – 6.1Mb 16 kb – 640 kb DSL lite 1.544 Mb – 6.1Mb HDSL Splitterless (voice and data) High bit rate IDSL ISDN DSL 128 kb SDSL Symmetric VDSL Source: 1.544 Mb - 2.048Mb 1.544 Mb - 2.048Mb 1.544 Mb - 2.048Mb 1.544 Mb - 2.048Mb Very high bit 12.9Mb – 52.8Mb whatis.com rate 1.5Mb – 2.3Mb Internet, Web access, video on demand, remote LAN access Standard ADSL T1/E1 service between server and phone co. or within co., WAN, LAN Data only, no voice Same as HDSL ATM networks, fiber to the neighborhood

DSL Challenges Who is the provider? Distance is a stumbling block the longer the run from the central office (CO), the lower the performance providers’ claims vs. user experiences oversubscription ISP, CLEC, ILEC (incumbent), other providers sell more capacity than they can support a variety of packages offered

More Resources Information www.xdslresource.com whatis.com grc.com www.dataquest.com www.adslforum.com www.coppermountain.com

DSL Providers consumer.bellsouth.net/adsl./index.asp www.telocity.com www.bluestar.com www.covad.com www.northpoint.com www.sbc.com www.rhythms.com

DSL Around the World Why? Uses extra spectrum on local loop cables to improve line performance up to 9 Mb an “always on” technology unlike modems or ISDN links CLECs are experimenting with Voice over DSL allows the CLECS to “take on” incumbent carriers in their native markets by delivering voice and data services

DSL Around the World Korea and Singapore have high penetraton rates US - SDSL, Europe - ADSL 1999 76% of European installed DSL lines were ADSL 2003 85% is the projected installation of ADSL local loop distances in Europe are typically shorter different types of cable in different countries

DSL Around the World Major European markets are Germany, Sweden Deutsche Telekom offers T-Online (DSL to existing ISDN users), Speed-50, TInterconnect DSL Business Service, T-ATM DSL Service Some business testimonials Festo AG & Co, a robotics manufacturer

DSL Around the World Sweden Netherlands www.telia.com www.kpn.com France Telecom British Telecommunications ISP www.demon.net