US 11,722,595 B2
Systems and methods for processing calls
Chia-Chang Li, Holmdel, NJ (US)
Assigned to Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed by Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed on Feb. 4, 2020, as Appl. No. 16/781,790.
Claims priority of provisional application 62/800,923, filed on Feb. 4, 2019.
Prior Publication US 2020/0252503 A1, Aug. 6, 2020
Int. Cl. H04M 3/00 (2006.01); H04M 5/00 (2006.01); H04L 12/66 (2006.01); H04M 3/22 (2006.01); H04M 7/00 (2006.01); H04L 65/1096 (2022.01); H04L 65/1069 (2022.01); H04L 65/1104 (2022.01)
CPC H04M 3/2281 (2013.01) [H04L 65/1069 (2013.01); H04L 65/1096 (2013.01); H04L 65/1104 (2022.05); H04M 7/0078 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a first device and from a second device, a message indicative of a call request, wherein the message comprises a sender identifier associated with a third device, a destination identifier, and header data, wherein the header data is added to the message by the second device;
determining, based on a presence or absence of a diversion header associated with the header data, an attestation value indicative of trustworthiness of usage of the sender identifier in the message;
generating, based on the attestation value, a signature; and
sending, based on the destination identifier, a signed message comprising the signature and at least a portion of the message.