Processing of data packets
A data packet and data technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as complex processor requirements
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[0061] image 3 A typical system is shown that enables telephone calls to be made over a data network. The terminals 10, 11 are connected to an associated digital line card (DLC) 12 in the private branch exchange PBX A. Voice, facsimile, other messages, and signaling information are switched together via a time division multiplexed (TDM) backplane 15 to an IP gateway card 20 which interfaces to a data network 30 . Gateway card 20 performs traffic conversion between the format used by the PBX and the format required for transmission over data network 30 . The gateway's function also includes handling the translation between dialed numbers and Internet Protocol addresses. Traffic is typically carried over a data network according to the TCP / IP or UDP / IP format; signaling is typically carried in TCP packets, while voice data is typically carried in streams of Real-time Transport Protocol (RTP) User Datagram Protocol (UDP) packets . Voice or other voice-band information is enca...
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