| 摘要 |
A data transmission system and method, including the steps of: a calling media gateway receiving message packets transmitted by a calling ISDN terminal through a plurality of calling circuits, and converting the message packets into data packets suitable for being transmitted through a single IP bearer link; the calling media gateway transmitting the data packets to a called media gateway through one IP bearer link; and the called media gateway parsing the data packets, and transmitting the parsed data packets to a called ISDN terminal through a plurality of called circuits. In the present invention, there is only one IP link between the two media gateways, and the delay is fixed when data of a plurality of links are passed across an IP network, therefore it is possible for the an multi-link ISDN call to avoid a data asynchrony due to inconsistencies of a plurality of IP link routes.
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