Methods and devices for obtaining a network service at a network
interconnected computing device (18) from one of plurality of network
servers (16a, 16b, 16c), are disclosed. The computing device (18) contacts
a first network server (16a) having a first network address, using the
network address over the network (10). The device (18) provides this
server (16a) with an identifier of the computing device. This identifier
may, for example, be a persistent state object or "cookie". The server
(16a), in response, queries a database and determines a second network
address of a server (16a, 16b or 16c) used to provide a service to the
computing device, based on the identifier. This address is provided to the
computing device (18). The network addresses of servers (16a, 16b, 16) may
be uniform resource locators. The computing device (18), in turn, contacts
the server identified by the second network address and obtains the
network service. The service, may for example, include receiving an
indicator at the computing device of an incoming telephone call on a
telephone network.
