Patent ID: 8406226
Filing Date: 2013-03-26
Classification: H04L,H04M

Abstract:
1. A method of setting up a call-back to a caller in a packet-based telecommunications network, the call-back being initiated by a user receiving a media stream comprising data related to the caller, whereby the method comprises the steps of: setting up by the user a packet-based connection to a media server and receiving the media stream from the media server; after choosing by the user to call back the caller, generating by the media server a cookie with data defining a state of the media stream, the cookie including a VXML URL relating to an Interactive Voice Response script, and sending by the media server a SIP REFER message and the cookie to the user; inserting an indication as a parameter of a contact header of the SIP REFER message wherein the indication specifies that the user may call back the media server or the associated media server after termination of the call-back; initiating by the user the call-back to the caller independently of the media server; and after termination of the call-back, sending the data defining the state of the media stream to the media server or an associated media server and using the data defining the state of the media stream to resume the transmission of the media stream sending by the user a SIP INVITE message and the VXML URL to the media server or the associated media server and loading by the media server or the associated media server the Interactive Voice Response script by means of the VXML URL for resuming the transmission of the media stream to the user from a state following the state defined by the data.