Note on
terminology: the term ``Internet services'' is potentially
ambiguous. The term ``Internet Service Provider'' (ISP) is commonly
used to mean a company that provides basic Internet access, i.e.
connectivity at Layer 3 in the OSI model. The term ``Application
Service Provider'' (ASP) is used to mean a company that delivers
end-user services such as e-mail, i.e. functionality at Layer 7 in
the OSI model. Throughout this document when we say ``Internet
services'' or ``Subscriber Services'' we mean services at application level.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.