DSL – VDSL-based Service Sets
VDSL offers a variety of simultaneous services, which are not possible otherwise. This opens the possibility for service providers to offer a new base for your subscription and multimedia services. Telco providers offering telephony and data services can now expand their business by offering comprehensive services and a host of video-centric applications. This enables the telecom companies to compete with television operators by effective invasive cable.
The original charter for ADSL was to provide a full range of broadband services for residential consumers, so why the need for VDSL? The reality is that ADSL is an Internet technology only.
The following table illustrates that, in the end, ADSL is limited in its ability to provide a full range of broadband services. VDSL, on the other hand, is well suited to provide these services today and tomorrow
| Application | Downstream | Upstream | ADSL | VDSL |
|---|---|---|---|---|
| Internet Access | 400 kbps − 1.5 Mbps | 128 kbps − 640 kbps | yes | yes |
| Webhosting | 400 kbps − 1.5 Mbps | 400 kbps − 1.5 Mbps | today only | yes |
| Video Confrencing | 384 kbps − 1.5 Mbps | 384 kbps − 1.5 Mbps | today only | yes |
| Video on Demand | 6.0 Mbps − 18.0 Mbps | 64 kbps − 128 kbps | today only | yes |
| Intractive video | 1.5 Mbps − 6.0 Mbps | 128 kbps − 640 kbps | today only | yes |
| Telemedicine | 6.0 Mbps | 384 kbps − 1.5 Mbps | today only | yes |
| Distance learing | 384 kbps − 1.5 Mbps | 384 kbps − 1.5 Mbps | today only | yes |
| Multiple Digital TV | 6.0 Mbps − 24.0 Mbps | 64 kbps − 640 kbps | today only | yes |
| Telecommuting | 1.5 Mbps − 3.0 Mbps | 1.5 Mbps − 3.0 Mbps | no | yes |
| Multiple VoD | 18 Mbps | 64 kbps − 640 kbps | no | yes |
| High-definnition TV | 16 Mbps | 64 kbps | no | yes |
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