Abstract: A telecommunications system is described comprising: a master server associated with each of a plurality of services available to subscribers; a database for holding profile records for each subscriber, the records identifying the master servers associated with services to which the subscriber subscribes; and a set of call agents arranged to manage user sessions. The master server for each service is arranged to respond to a query from a call agent to communicate a set of trigger events and a set of servers for executing the events. Finally, the call agents are arranged to manage user sessions by retrieving the profile records from the database, querying the master servers for the services to which the user subscribes to obtain the set of trigger events to be reported and the set of servers for executing the reported events and dynamically constructing an event table for a user session based on the response from the master servers.

Abstract: A method of providing an audio service to a subscriber communication device over a communication network, the method comprising the steps of; identifying a portion of the communication network in accordance with a selection criterion, identifying a subscriber communication device within said portion, and transmitting an offer message to the subscriber communication device to offer an audio service.

Abstract: A telecommunications system having network elements arranged so as to provide a user of the system with a choice of a plurality of call attributes, the elements including a call attribute variation element whereby the user, during a call, is able to vary the attributes thereof.

Abstract: A telecommunications system is described comprising: a master server associated with each of a plurality of services available to subscribers; a database for holding profile records for each subscriber, the records identifying the master servers associated with services to which the subscriber subscribes; and a set of call agents arranged to manage user sessions. The master server for each service is arranged to respond to a query from a call agent to communicate a set of trigger events and a set of servers for executing the events. Finally, the call agents are arranged to manage user sessions by retrieving the profile records from the database, querying the master servers for the services to which the user subscribes to obtain the set of trigger events to be reported and the set of servers for executing the reported events and dynamically constructing an event table for a user session based on the response from the master servers.