IP multimedia subsystem access method and apparatus
H Lindgren - US Patent 8,160,578, 2012 - Google Patents
A method of facilitating access to IP Multimedia Subsystem, IMS, services by non-IMS
enabled terminals. The method comprises registering a non-IMS enabled terminal with a …
enabled terminals. The method comprises registering a non-IMS enabled terminal with a …
Maintaining IMS registration while disconnected from IP bearer
J Regnier, C Kawa, H Thorkelsson - US Patent 8,195,158, 2012 - Google Patents
US8195158B2 - Maintaining IMS registration while disconnected from IP bearer - Google
Patents US8195158B2 - Maintaining IMS registration while disconnected from IP bearer …
Patents US8195158B2 - Maintaining IMS registration while disconnected from IP bearer …
Method, equipment and system for deregistering a wireless IP access network contact address
S Long - US Patent 8,279,854, 2012 - Google Patents
A method and equipment for deregistering a wireless IP access network contact address are
provided. When a call corresponding to a common subscriber ID of a TE is received after the …
provided. When a call corresponding to a common subscriber ID of a TE is received after the …