System for implementing elastic permanent virtual connection and its method
A virtual connection and permanent technology, applied in the system field of realizing elastic permanent virtual connection, can solve the problem that users cannot know and use channels, and achieve the effect of saving bandwidth and flexible networking
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[0032] The elastic permanent virtual connection (Stretchy PVC) proposed in the present invention is a hybrid connection establishment method, which is realized through a standard signaling protocol process, and only has permanent virtual connections (PVC) at the start and end of the connection establishment. Feature, and the connection establishment method with the switch virtual connection (SVC) feature in the middle of the connection. This connection establishment method is equivalent to PVC for terminal equipment, which is convenient for users to accept; but for network intermediate nodes, it is SVC, which can realize the dynamic allocation and release of resources through the process of signaling interaction.
[0033] In the UNI series of protocol specifications and the NNI series of protocol specifications, some information units carried in the SETUP and ADD PARTY messages used to create a connection are interpreted by the user terminal, and the intermediate nodes transparent...
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