An implementation method for Computer-Supported Telecommunications Applications, CSTA, comprising: receiving (101, 201) a conference operation request issued by a Computer Telephony Integration, CTI, server, wherein the conference operation request carries a conference picture parameter; executing a multi-media operation of a multi-picture at a multi-media conference according to the conference picture parameter, wherein the multi-media conference has a plurality of users; wherein the conference picture parameter is a first conference picture parameter, and executing the multi-media operation of the multi-picture comprising: creating corresponding picture and sub-picture according to the conference picture parameter; setting first input and output parameter for the picture and sub-picture according to the conference picture parameter; and implementing an input and output of the picture and/or sub-picture according to the set first input and output parameter; wherein the method further comprises: determining that a video shall be recorded according to a video recording parameter in the first conference picture parameter; and recording the content of corresponding picture and/or sub-picture according to the video recording parameter and the set first input and output parameter; characterized by the implementation method being implemented by a Soft Automatic Call Distribution, SoftACD, and setting a timer by the SoftACD for regularly writing recorded data into a corresponding file for video storage; wherein the setting first input and output parameter for the picture and sub-picture according to the conference picture parameter comprises indicating which user's input is inputted to which sub-picture, and which sub-pictures are outputted to which one of the users. receiving (101, 201) a conference operation request issued by a Computer Telephony Integration, CTI, server, wherein the conference operation request carries a conference picture parameter; executing a multi-media operation of a multi-picture at a multi-media conference according to the conference picture parameter, wherein the multi-media conference has a plurality of users; wherein the conference picture parameter is a first conference picture parameter, and executing the multi-media operation of the multi-picture comprising: creating corresponding picture and sub-picture according to the conference picture parameter; setting first input and output parameter for the picture and sub-picture according to the conference picture parameter; and implementing an input and output of the picture and/or sub-picture according to the set first input and output parameter; wherein the method further comprises: determining that a video shall be recorded according to a video recording parameter in the first conference picture parameter; and recording the content of corresponding picture and/or sub-picture according to the video recording parameter and the set first input and output parameter; characterized by the implementation method being implemented by a Soft Automatic Call Distribution, SoftACD, and setting a timer by the SoftACD for regularly writing recorded data into a corresponding file for video storage; creating corresponding picture and sub-picture according to the conference picture parameter; setting first input and output parameter for the picture and sub-picture according to the conference picture parameter; and implementing an input and output of the picture and/or sub-picture according to the set first input and output parameter; wherein the method further comprises: determining that a video shall be recorded according to a video recording parameter in the first conference picture parameter; and recording the content of corresponding picture and/or sub-picture according to the video recording parameter and the set first input and output parameter; characterized by the implementation method being implemented by a Soft Automatic Call Distribution, SoftACD, and setting a timer by the SoftACD for regularly writing recorded data into a corresponding file for video storage; determining that a video shall be recorded according to a video recording parameter in the first conference picture parameter; and recording the content of corresponding picture and/or sub-picture according to the video recording parameter and the set first input and output parameter; characterized by the implementation method being implemented by a Soft Automatic Call Distribution, SoftACD, and setting a timer by the SoftACD for regularly writing recorded data into a corresponding file for video storage; wherein the setting first input and output parameter for the picture and sub-picture according to the conference picture parameter comprises indicating which user's input is inputted to which sub-picture, and which sub-pictures are outputted to which one of the users.