VoDSL is usually provisioned as an overlay to a DSL broadband access network.

Контекст следующий:

VoDSL combines asynchronous transfer mode (ATM) with DSL service to deliver voice and data services over a single copper line. The different attributes of DSL technology and ATM functionality work well together. DSL links are ideally suited for voice and data integration. ATM can simultaneously carry voice and data traffic. VoDSL is usually provisioned as an overlay to a DSL broadband access network. A VoDSL implementation requires several additional components.

Заранее спасибо!

Ок! Спасибо!