Resources Contact Us Home
Terminal-to-terminal communication connection control method using IP transfer network

Image Number 105 for United States Patent #8121113.

Both a connection server and a relay connection server are installed in an IP transfer network; a function similar to a line connection control of a subscriber exchanger is applied to a connection server; a function similar to a line connection control of a relay exchanger is applied to the relay connection server; and a terminal-to-terminal communication connection control method with using the IP transfer network is realized in such a manner that a telephone set and a terminal such as an IP terminal and a video terminal transmit/receive an initial address message, an address completion message, a call pass message, a response message, a release message and a release completion message, which can be made in a 1-to-1 correspondence relationship with line connection control messages of the common line signal system. Furthermore, while an address administration table is set to a network node apparatus of an IP transfer network, means for registering addresses of the terminals into this address administration table is employed, so that an IP packet communication by a multicast manner can be realized with improving information security performance.

  Recently Added Patents
Fuse part in semiconductor device and method for forming the same
Upper surface of a skateboard deck
Microporous membranes and methods for producing and using such membranes
Signal processing apparatus and methods
Real-image zoom viewfinder and imaging apparatus
Charge pump circuit and power-supply method for dynamically adjusting output voltage
Method for preparing a .beta.-SiAlON phosphor
  Randomly Featured Patents
Photodiode circuit with improved response time
Authentication apparatus and authentication system
Symmetrical halogenated and alkylated alditol derivatives and compositions and articles containing same
C.sub.22 -Cycloaliphatic tricarboxylic fatty acid soaps
Abnormality detecting device of electric power converting device and abnormality detecting method
Compositions and methods for the treatment of sepsis
Process for catalytic hydroxylation of aromatic hydrocarbons
Method and apparatus for a reduced lane-lane skew, low-latency transmission system
System and method for controlling actuation of a well component
Curable composition for medium and high voltage power cables