| 摘要 |
A method for negotiating bandwidth of a Data Communication Channel (DCC) automatically, including the steps of: performing a first communication channel configuration by two network elements respectively; informing, by the network element at transmitting end of the DCC, the network element at receiving end of the DCC of DCC negotiation message via the preconfigured communication channel; after receiving the DCC negotiation message, the network element at the receiving end comparing the overhead bytes contained in the DCC negotiation message with overhead bytes available to the network element at the receiving end, to obtain an intersection, which is overhead bytes, for constructing a DCC, available to both the network elements, wherein the overhead bytes as bandwidth of the channel are used to perform a second DCC configuration in the same order, so as to establish the DCC.
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