Patent ID: 11968266
Assignee: RIBBON COMMUNICATIONS OPERATING COMPANY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC G  H

Claim 23:
24. A non-transitory machine readable medium including a set of processor executable instructions for a first client communications device, which when executed by a processor of the first client communications device control the first client communications device to:
download, by the first client communications device, a client application;
operate the client application, within a web browser on the first client communications device, to send a signal to initiate a communications session with a second client communications device;
receive, by the first client communications device, session state information from a first communications server which uses Session Initiation Protocol (SIP) signaling to establish a communications session between said first client communications device and said second client communications device, said session state information being for the communications session established between said first client communications device and said second client communications device;
operate the web browser on the first client communications device to store said session state information in said first client communications device;
operate the web browser on the first client communications device to provide said stored session state information to a second communications server following a loss of a connection with the first communications server;
wherein said session state information received by the first client communications device is encrypted by the first communications server;
wherein said encrypted session state information is generated by the first communications server; and
wherein said first client communications device does not have information needed to decrypt the encrypted session state information.