A method is provided for managing media in a Push-To-Talk (PTT) over Cellular (PoC) box in an aggregation proxy server for sending media to a PoC User Equipment (UE) in a PoC system. The aggregation proxy server receives a PoC session control data request message which is associated with media information stored in the PoC box from the PoC UE. The PoC session control data request message for requesting the media information stored in the PoC box, is sent to the PoC box. The media information is received from the PoC box in response to the PoC session control data request message, and the media information received from the PoC box is sent to the PoC UE. The media information includes a parameter related to media stored in the PoC box.