Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
System for simultaneous registration of VoIP network for dual mode mobile telephone stations










Image Number 7 for United States Patent #7522921.

The dual registration system tracks two serving Mobile Switching Centers for each subscriber. The registrations are differentiated as IP Multimedia Subsystem for voice call delivery purposes and CDMA Mobile Switching Center for IP access and other non-voice services. The registration message from the IP Multimedia Subsystem is enhanced via protocol extensions to include an indication that this registration is from the IP Multimedia Subsystem and is to indicate the target Mobile Switching Center for IP Multimedia Subsystem services, such as VoIP. The Home Location Register is enhanced to store two Mobile Switching Centers as the serving Mobile Switching Centers for the dual mode subscriber. The Home Location Register logic is extended to route service to the appropriate Mobile Switching Center depending on service offered, subscriber preferences, and the registration status.








 
 
  Recently Added Patents
Method for making an abrasion-resistant steel plate and plate obtained
High performance design rule checking technique
Extensible, filtered lists for mobile device user interface
Stability control system with body-force-disturbance heading correction
Synergistic fungicidal interactions of 5-fluorocytosine and other fungicides
Nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and its methods of preparation
Single-wavelength correction method for luminescent homogeneous biological assay
  Randomly Featured Patents
Method and compositions for the non-invasive treatment of telangiectasia
Method for developing three dimensional surface patterns for a papermaking belt
Apparatus for manufacturing gypsum board
Diagnostic kits for detection of target nucleic acid sequences
Wet etched insulator and electronic circuit component
Paper discharge device for a printer
Method and apparatus for rendering a quadrangle primitive
Substrate cross-section observing apparatus
Paper holder
Nozzle for continuous casting