ADSL Requirements

New support is provided in the Windows and Windows NT operating systems for ADSL adapters, which provide a faster method for moving data over regular phone lines.

It is recommended that manufacturers participate in developing standards for this technology. For example, review the white paper, An Interoperable End-to-End Broadband Service Architecture over ADSL Systems, which discusses end-to-end service interoperability over ATM over ADSL. This paper, available at http://www.microsoft.com/isp/supercomm, was jointly developed by leading ADSL vendors.

32. ADSL device meets PC 98 network adapter requirements
Required

For PC 98, the driver must support NDIS 5.0. It is also recommended that the manufacturer participate in developing standards for ATM solutions.

33. ATM/ADSL solution is implemented
Recommended

Refer to ATM Adapter requirements for ATM specific requirements if an ATM/ADSL solution is implemented.

34. ADSL device supports RADSL
Recommended

On a rate adaptive digital subscriber line (RADSL), the downstream and upstream data rates are independently set either by an automatic adaptive algorithm or by manual selection.

RADSL provides the capability to optimize the transmission speed and performance over a range of telephone-line loop distances. Adaptive channel equalization ensures more robust performance in the presence of channel impairments and narrow-band interference.

This also helps telephone companies to provision RADSL access on their existing networks. RADSL products can be provisioned on many telephone lines without costly and time-consuming network upgrades.