Patent ID: 9591377
Date: 2017-03-07
CPC Classifications: H04L,H04M,H04N

Claim:
1. A method for recording multimedia data of communications between communication devices in a system comprising a mirror switch, a distribution device and a plurality of recording devices, wherein the method is performed by the distribution device and comprises: receiving communication data sent from the mirror switch, the communication data comprising first multimedia data of a first call, second multimedia data of a second call, and a first signaling message and a second signaling message used to establish channels for transmitting the first multimedia data and the second multimedia data respectively; obtaining first multimedia data identification information corresponding to the first multimedia data from the first signaling message, and obtaining second multimedia data identification information corresponding to the second multimedia data from the second signaling message; generating a first recording instruction including the first multimedia data identification information and a second recording instruction including the second multimedia data identification information; identifying a first recording device and a second recording device from the plurality of recording devices; sending the first recording instruction to the first recording device to instruct the first recording device to record the first multimedia data of the first call without sending the first multimedia data of the first call to the first recording device; and sending the second recording instruction to the second recording device to instruct the second recording device to record the second multimedia data of the second call without sending the second multimedia data of the second call to the second recording device; wherein the first signaling message is a Session Description Protocol (SDP) message, and the first multimedia data identification information is an IP address included in a connection information field of the SDP message, and wherein the second signaling message is an SDP message, and the second multimedia data identification information is an IP address including in a connection information field of the SDP message.