NETWORK SYNCHRONIZATION OVER IP NETWORKS

专利名称：NETWORK SYNCHRONIZATION OVER IP

NETWORKS

发明人：Vipapun Thavisri申请号：US12419144申请日：20090406

公开号：US201002499A1公开日：20101007

专利附图：

摘要：Network timing is derived from the PSTN and distributed through the networkto gateways capable of deriving timing from the incoming UDP stream. The derivedtiming has the correct frequency for voice telephony without using external timing

sources or extraneous hardware components. For example, a digital signal processor(DSP) can derive the timing from a timed TDM bus and distribute messages, such as IPmessages, to other gateways or port networks. The other gateways and port networksuse the incoming stream to extract the timing which is then used to time their TDM bus.The port networks and gateways can also distribute other streams to other gateways in afan-out type of arrangement. This internally generated timing can be used, for example,for Circuit Emulated Services (CES).

申请人：Vipapun Thavisri

地址：Holmdel NJ US

国籍：US

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