US 6,807,166 B1 · Gateway for internet telephone

Abstract

A gateway for an internet telephone system manages calls to and from personal computers and enables the personal computers to use the internet telephone system with an IP address assigned by a DHCP server or a private IP address. The gateway has a LAN receiver for processing an incoming call from the Internet or a personal computer, a line transmitter for processing an outgoing call to a telephone according to a request from the LAN receiver, a line receiver for processing an incoming call from a telephone, a LAN transmitter for processing an outgoing call to the Internet or a personal computer according to a request from the line receiver, and a logger for logging information about calls according to requests from the LAN transmitter and line transmitter. If the LAN receiver receives an incoming call from a LAN and if the incoming call accompanies an IP address as a receiver address, the LAN receiver requests the LAN transmitter to make a call based on the incoming call, and the LAN transmitter requests the logger to log information about the call.

Claims18

Dependent claims

A gateway for an internet telephone system to which one or more terminals having respective telephone numbers and IP addresses assigned by implementing a DHCP are connected within the domain of the gateway, comprising:

a registration table for translating between a telephone number and an IP address, both of which are assigned to one of the one or more terminals;
a retrieving means for retrieving the telephone number from the registration table based on the IP address of an originating terminal, and retrieving the IP address of a destination terminal from the registration table based on a telephone number included in a received IP packet;
a transmitting means for transmitting outside of the domain an IP packer including the retrieved telephone number of the originating terminal;
and
a receiving means for receiving from outside of the domain an IP packet including a telephone number, and specifying a destination terminal of the received IP packet from the retrieved IP address of the destination terminal.

2 more elements

A gateway for an internet telephone system, comprising:

a LAN receiver for processing an incoming call from the Internet or a personal computer;
a line receiver for processing an incoming call from a telephone;
a LAN transmitter for processing an outgoing call to the Internet or a personal computer according to a request from the line receiver;
a line transmitter for processing an outgoing call to a telephone according to a request from the LAN receiver;
a retrieval unit for retrieving the address of a receiver gateway according to a request from the line receiver;
and
a logger for logging information about calls according to requests from the LAN transmitter and line transmitter, wherein, if the LAN receiver receives an incoming call from a LAN and if the incoming call accompanies a receiver IP address,:
the LAN receiver requests the LAN transmitter to make a call based on the incoming call;
and
the LAN transmitter requests the logger to log information about the call;
wherein:
the LAN receiver has a first table for registering IP addresses assigned to personal computers that are within the domain of the gateway, telephone numbers related to the personal computers, and reception enabled/disabled states of the personal computers;
and
if the LAN receiver receives an incoming call from a LAN and if the incoming call accompanies a receiver telephone number that is within the domain of the gateway, the LAN receiver retrieves an IP address from the first table according to the receiver telephone number, and if a personal computer having the retrieved IP address is in a reception enabled state, requests the LAN transmitter to make a call based on the incoming call and the retrieved IP address.

11 more elements

Dependencies are inferred from the claim text.

Gateway for internet telephone

Life of this patent

Gateway for internet telephone

Life of this patent

Abstract

Claims18