Patent ID: 9225839
Filing Date: 2015-12-29
Classification: H04M

Abstract:
1. A method executed by a group call server for reestablishing a voice communication session moderated by the group call server providing a group communications session between two or more telephony devices, the method comprising: monitoring, by the group call server, for a request for disconnection of a voice communication session from a telephony device of the two or more telephony devices; detecting, by the group call server, a disconnection of the voice communication session; in response to detecting that the voice communication session has been disconnected, and that the request for disconnection of the voice communication session has not been received by the group call server, sending an invitation to the telephony device to reestablish the voice communication session; and in response to receiving an acceptance to the invitation from the telephony device, reestablishing, by the group call server, the voice communication session with the telephony device, wherein reestablishing the voice communication session comprises at least one of authorizing and authenticating the telephony device using at least one of authorization information and authentication information.