Which statement best describes the value proposition for migration to an integrated services router platform?

A.
Integrated services routers connect legacy applications to provide a seamless migration path to IP telephony

B.
Integrated services routers are the first and only routers to offer an integrated systems approach that maximizes operating efficiencies and adds intelligence to the network.

C.
Integrated services routers interconnect networks, connect network devices, and route traffic over the network.

D.
Integrated services routers extend telephony features and functions to IP phones, VoIP gateways, media-processing devices, and multimedia applications.