US 11,659,011 B2
System and method for determining trust for SIP messages
Jan Hendrik Lucas Bakker, Fort Worth, TX (US); Adrian Buckley, Tracy, CA (US); and Andrew Michael Allen, Hallandale Beach, FL (US)
Assigned to BlackBerry Limited, Waterloo (CA)
Filed by BlackBerry Limited, Waterloo (CA)
Filed on Jul. 22, 2021, as Appl. No. 17/383,095.
Application 17/383,095 is a continuation of application No. 16/175,430, filed on Oct. 30, 2018, granted, now 11,082,459.
Application 16/175,430 is a continuation of application No. 15/194,105, filed on Jun. 27, 2016, granted, now 10,135,885, issued on Nov. 20, 2018.
Application 15/194,105 is a continuation of application No. 12/915,649, filed on Oct. 29, 2010, granted, now 9,401,935, issued on Jul. 26, 2016.
Application 12/915,649 is a continuation of application No. 12/727,743, filed on Mar. 19, 2010, granted, now 8,407,354, issued on Mar. 26, 2013.
Claims priority of provisional application 61/168,798, filed on Apr. 13, 2009.
Prior Publication US 2021/0352117 A1, Nov. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 65/1073 (2022.01); H04L 69/40 (2022.01); H04L 9/40 (2022.01); H04W 12/10 (2021.01); H04L 65/403 (2022.01); H04L 65/611 (2022.01); H04L 65/1104 (2022.01); H04L 65/1016 (2022.01); H04L 69/22 (2022.01); H04L 67/1095 (2022.01); G06F 11/20 (2006.01); G06F 3/12 (2006.01); H04L 9/08 (2006.01); H04L 51/212 (2022.01); H04L 65/1101 (2022.01); H04L 101/385 (2022.01)
CPC H04L 65/1073 (2013.01) [H04L 63/126 (2013.01); H04L 65/1016 (2013.01); H04L 65/1104 (2022.05); H04L 65/403 (2013.01); H04L 65/611 (2022.05); H04L 69/22 (2013.01); H04L 69/40 (2013.01); H04W 12/10 (2013.01); G06F 3/1203 (2013.01); G06F 11/2007 (2013.01); H04L 9/083 (2013.01); H04L 51/212 (2022.05); H04L 65/1101 (2022.05); H04L 67/1095 (2013.01); H04L 2101/385 (2022.05)] 18 Claims
OG exemplary drawing
 
1. A method in a user agent (UA) for identifying an originator of a Session Initiation Protocol (SIP) reject response, the method comprising:
sending a SIP request; and
receiving, from the originator, the SIP reject response to the SIP request, the SIP reject response including an indicator comprising a parameter “fe”, wherein one of a plurality of types of network nodes is assigned to the parameter “fe”, the parameter “fe” indicating a type of network node for the originator.