| 摘要 |
Techniques are described by which an IP telephone system leverages the digital signal processing functions of end-user IP telephones by distributing signal processing tasks typically carried out by a centralized IP-PBX. The end-user IP telephones publicize their signal processing capabilities and availabilities to an IP-PBX, which maintains a resource capability mapping of the IP telephones. When the IP-PBX receive a bitstream for a communication session involving IP telephones and/or legacy phones of the IP telephone system, the IP-PBX determines the signal processing requirements for the bitstream, selects an available, capable IP telephone to perform the requirements, and distributes the bitstream to the selected IP telephone. The IP telephone performs the requisite signal processing and returns the processed bitstream to the IP-PBX, which forwards the processed bitstream to the destination endpoint for the communication session.
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