MC Cattani, PA Brice - US Patent 8,379,632, 2013 - Google Patents
A call processing module includes a first network interface configured to communicate over a packet-switched network and a second network interface configured to communicate with …
RJ Abrams, Z Li, ZJ Yang, HL Lu - US Patent 7,158,508, 2007 - Google Patents
(57) ABSTRACT A method of setting up calls over circuit-switched and packet-switched resources on a single network having the steps of receiving a request from a user for a call …
V McConnell, W Xue, B Zhang, J Money - US Patent 6,741,695, 2004 - Google Patents
An interface engine that is communicatively connected to a packet-switched network and to a legacy circuit-switched network uses a call processing protocol, such as the session …
R Keller, A Witzel - US Patent 8,619,675, 2013 - Google Patents
Techniques of emergency session handling in a communica tion network are provided, in which a packet Switched net work control function configured to handle emergency ses …
M Olsson, G Rune, P Synnergren… - US Patent …, 2016 - Google Patents
In a method of operating a wireless terminal, the wireless terminal (30) sends a request to participate in a circuit switched call with a circuit switched network. Prior to establishment of …
A Buckley, JL Bakker - US Patent 8,369,319, 2013 - Google Patents
Methods and apparatus for originating a Session Initiation Protocol (SIP) call from a user equipment (UE) device in a network environment including a circuit-switched (CS) network …
X Xu, C Xu, WD Zuo - US Patent App. 12/375,439, 2010 - Google Patents
SUMMARY OF THE INVENTION 0005 According to one aspect, the present invention is a method for establishing a circuit Switched call at an access terminal that is processing an …
A Buckley, JL Bakker - US Patent 7,710,950, 2010 - Google Patents
Methods and apparatus for originating a Session Initiation Protocol (SIP) call from a user equipment (UE) device in a network environment including a circuit-switched (CS) net work …
T Jalkanen - US Patent 9,301,079, 2016 - Google Patents
The present Solution relates to providing a call service in a communication system, where in response to recognizing a predetermined event related to a user terminal (UEA), it is …