Patent · US Active

Internet protocol (IP) multimedia subsystem (IMS) based session initiation protocol (SIP) call setup retry

US10798134B2 · kind B2 · utility

5Cited by

0References

21Claims

0Family size

Assignee

Charter Communications Operating, LLC · US

Inventors

Ashutosh Kumar Sinha · Santa Clara, US
Robert Dianda · Colorado Springs, US

Key dates

Filing date	Mar 28, 2018
Grant date	Oct 6, 2020
Priority date	—
Expiry date	Aug 30, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH04L61/4588
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Systems, methods, and devices of the various embodiments disclosed herein may enable automatic retry of Internet Protocol (IP) Multimedia Subsystem (IMS) Based Session Initiation Protocol (SIP) Call Setup. Various embodiments may enable a server in an IMS based telecommunication network, such as a proxy-call session control function (P-CSCF) server, interrogating/serving-call session control function (I/S-CSCF) server, telephony application server (TAS), etc., to reattempt SIP call setup. In various embodiments, in response to receiving a SIP error response including a retry-after header, the server may wait a period of time before sending a new SIP invite message.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.