1. A method for providing voice control for accessing a conference service in a communication network, comprising: receiving a request from a caller to access a conference service; interacting with said caller to receive access information related to said conference service for joining a particular conference bridge in a natural language response; providing access to said conference service if said access information is authenticated to allow said caller to access said conference service; and starting an authentication process if said caller is a subscriber who is unable to provide the access information, wherein a triggering of said authentication process is deduced from said natural language response.