Cable modem and protocol conversion processing method
AssigneeKabushiki Kaisha Toshiba
InventorTakashi Fukada
Life of this patent
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Abstract
A cable modem with a function of packetizing voice information and transmitting/receiving the packetized voice information includes an interface for connection to an ISDN (Integrated Services Digital Network) telephone, a connection control unit which executes a connection control for the ISDN telephone connected via the interface, and a VoIP control unit which executes a VoIP-related protocol process for a voice call by the ISDN telephone that is connection-controlled by the connection control unit.
Claims12
A cable modem with a function of packetizing voice information and transmitting/receiving the packetized voice information, comprising:
- an interface for connection to an ISDN (Integrated Services Digital Network) telephone;
- a connection control unit which executes a connection control for the ISDN telephone connected via the interface;
- and
- a VoIP control unit which executes a VoIP-related protocol process for a voice call by the ISDN telephone that is connection-controlled by the connection control unit.
A protocol conversion processing method for a cable modem with a function of packetizing voice information and transmitting/receiving the packetized voice information, comprising:
- providing a connection control unit which executes a connection control for an ISDN telephone connected via an interface for connection to the ISDN telephone, and a VoIP control unit which executes a VoIP-related protocol process for a voice call by the ISDN telephone that is connection-controlled by the connection control unit;
- telling a connection request through the connection control unit to the VoIP control unit in response to a call setup message from the ISDN telephone, and sending a connection message to the ISDN telephone upon receiving a connection completion notice from the VoIP control unit in response to the connection request;
- and
- telling a disconnection request through the connection control unit to the VoIP control unit in response to a call disconnection message from the ISDN telephone, and sending a release message to the ISDN telephone upon receiving a disconnection completion notice from the VoIP control unit in response to the disconnection request.
A protocol conversion processing method for a cable modem with a function of packetizing voice information and transmitting/receiving the packetized voice information, comprising:
- providing a connection control unit which executes a connection control for an ISDN telephone connected via an interface for connection to the ISDN telephone, and a VoIP control unit which executes a VoIP-related protocol process for a voice call by the ISDN telephone that is connection-controlled by the connection control unit;
- sending a call setup message through the connection control unit to the ISDN telephone in accordance with a connection request from the VoIP control unit, and telling a connection completion to the VoIP control unit upon receiving a connection message from the ISDN telephone in response to the call setup message, and
- sending a call disconnection message through the connection control unit to the ISDN telephone in accordance with a connection request from the VoIP control unit, and telling a disconnection completion to the VoIP control unit upon receiving a release message from the ISDN telephone in response to the call disconnection message.
Dependencies are inferred from the claim text.