A call processing system includes an access gateway that has a local
switching unit. The access gateway, in operation, provides access to
voice signals and data signals. The call processing system also includes
a call feature server that has a host interface platform configured to
connect to the access gateway through a network. The call feature server,
in operation, provides call control functionality to the local switching
unit. The call feature server is configured to provide bearer control
signals through a packet network to establish a bearer channel.