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

Claim 13:
14. A first client communications device comprising:
memory; and
a processor that controls the first client communications device to:
download 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 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.