Modem with voice processing capability
First Claim
Patent Images
1. A media terminal adapter for supporting bidirectional exchange of packetized voice or voice data over a hybrid fiber coaxial (HFC) network, the media terminal adapter including a digital device configured to provide:
- a subscriber-side interface adapted to couple to a subscriber telephony device;
a network-side interface adapted to couple to a cable modem;
a host application programming interface (HAPI) that includes a software messaging interface to a voice and data digital signal processor (DSP);
a voice over home network (VOHN) interface that includes a software messaging interface to a remote home phone network alliance (HPNA) media adapter; and
a gateway control protocol (GCP) interface adapted to communicate with a GCP logic module, wherein the GCP interface is configured to support signaling and encapsulation elements of a public switched telephone network (PSTN).
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Abstract
A network gateway is configured to facilitate on line and off line bi-directional communication between a number of near end data and telephony devices with far end data termination devices via a hybrid fiber coaxial network and a cable modem termination system. The described network gateway combines a QAM receiver, a transmitter, a DOCSIS MAC, a CPU, a voice and audio processor, a voice synchronizer, an Ethernet MAC, and a USB controller to provide high performance and robust operation.
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Citations
24 Claims
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1. A media terminal adapter for supporting bidirectional exchange of packetized voice or voice data over a hybrid fiber coaxial (HFC) network, the media terminal adapter including a digital device configured to provide:
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a subscriber-side interface adapted to couple to a subscriber telephony device; a network-side interface adapted to couple to a cable modem; a host application programming interface (HAPI) that includes a software messaging interface to a voice and data digital signal processor (DSP); a voice over home network (VOHN) interface that includes a software messaging interface to a remote home phone network alliance (HPNA) media adapter; and a gateway control protocol (GCP) interface adapted to communicate with a GCP logic module, wherein the GCP interface is configured to support signaling and encapsulation elements of a public switched telephone network (PSTN). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification