| 摘要 |
A session boarder controller ( 4, 5; 20 ) is use between peering networks ( 1, 2, 3 ) supporting packetized voice transport. In order to save expensive DSP resources, a dynamic transcoder resource management is proposed. The session boarder controller contains: I/O means ( 21, 22 ) having an I/O capacity that corresponds to at least a predefined number of trunks; digital signal processing means ( 23 a, 23 b, 23 c) adapted to convert between different type of voice codecs used for packetized voice transport in incoming or outgoing connections, said digital signal processing means ( 23 a, 23 b, 23 c) having limited processing capacity; and control means ( 24 ) adapted to determine idle processing capacity of said digital signal processing means ( 23 a, 23 b, 23 c) and to reject resource-consuming connections that require codec conversion, if the total amount of idle processing capacity would fall below a threshold that depends on the number of idle trunks.
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