An aspect of the present invention enables users to avail specialized services using missed calls. In one embodiment, a missed call server on receiving an indication that a missed call has been placed by a user to a phone number, determines the specialized service corresponding to the phone number, and then sends a data to the service provider offering the determined service. The service provider then delivers the specialized service (sought to be availed) to the user. One of the specialized services is the delivery of content to the user. Thus, a user is enabled to access different contents by placing missed calls to the appropriate phone numbers.