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
Reverse mapping method and apparatus for form filling
Methods for integrating the production of cellulose nanofibrils with the production of cellulose nanocrystals
Load balancing in shortest-path-bridging networks
Wide viewing angle indicators for network devices
Off-line converter with digital control
Power supply system for motor vehicle
Methods and compositions for inhibiting progression to chronic cardiac failure
  Randomly Featured Patents
Multi-rule quality control method and apparatus
Condiment container
System and method for calibrating a transceiver
Tumor delivery vehicles
Combined multi-composition stick product, such as lip balm, sun screen, deodorant, or glue stick and container therefor
Water-based colorant preparations
Two-gate non-coplanar FET with self-aligned source
3-(acyloxyphenyl)benzofuran-2-one stabilisers
Catalyst deterioration suppressing apparatus and method
Semiconductor device and a method for fabricating a semiconductor device