Automated call booking, call reconnection and diary booking services are described with reference to an intelligent network. The network includes service switching points (SSP) and a service control point (SCP) includes a number of intelligent peripherals (IP) arranged to provide services to customers. On receipt of an access code from a customer line, the SSP refers the request to the SCP which directs connection of IPs to obtain instructions from the customer. In one case, the customer can pre-book an automated telephone conference call at a specified date and time (or at regularly recurring intervals). An alternative service enables a customer to request reconnection of a call currently in progress at a specified later time or after a pre-determined period. A voice record and replay facility enables useful alarm call information to be stored.