The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2021
Filed:
Jun. 06, 2016
Blackberry Limited, Waterloo, CA;
Bechir Trabelsi, Nepean, CA;
Andrew Michael Allen, Hallandale Beach, FL (US);
Kevin N. Chen, Ottawa, CA;
Lawrence Edward Kuhl, Waterloo, CA;
BlackBerry Limited, Waterloo, CA;
Abstract
A method and devices for handling crossed-invite situations in set-up of IP-based sessions. A local device receives an incoming session invite after sending an outgoing session invite before the outgoing session invite has been accepted. It then determines that the incoming session invite was sent by the remote device to which the outgoing session invite is also addressed. The method includes determining a remote device priority value from identifying information contained in the incoming session invite, comparing the remote device priority value with a local device priority value to determine whether the remote device or the local device is higher priority and, if the remote device is higher priority, canceling the outgoing session invite and displaying an incoming call answer screen for the incoming session invite, and if the local device is higher priority, waiting for cancelation of the incoming session invite and acceptance of the outgoing session invite.