Voice over internet protocol system having dynamic gain control function and method thereof
First Claim
1. A Voice over Internet Protocol (VoIP) system having a dynamic gain control function and a communication path between a first terminal, the first terminal being an extension telephone of a private exchange, and second terminal of a type operating according to an Internet protocol, the communication path comprising a VoIP gateway connected to said private exchange, and a gatekeeper connected between said VoIP gateway and the second terminal, said VoIP system comprising:
- said private exchange transmitting a gain value to said VoIP gateway; and
said VoIP gateway receiving the gain value from the private exchange, storing the gain value, amplifying PCM voice data transmitted from the private exchange according to the stored gain value, transforming the amplified PCM voice data into a VoIP packet, transmitting the VoIP packet to a said second terminal, transforming VoIP packets transmitted from the said second terminal into transformed PCM voice data, amplifying the transformed PCM voice data according to the stored gain value, and transmitting the amplified PCM voice data to said first terminal of the private exchange.
1 Assignment
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Accused Products
Abstract
A Voice over Internet Protocol (VoIP) system having a dynamic gain control function and a method for providing a gain dynamically using the same system wherein, in the process that Pulse Code Modulation (PCM) data are transformed into a VoIP packet or vice versa, a gain value is dynamically assigned according to the type of terminal equipment utilized and the PCM voice data can be amplified and outputted according to the assigned gain value. The system includes a private exchange having a gain table and a VoIP gateway for the receiving the gain value from the private exchange in order to amplify the PCM voice and transform the amplified PCM voice data into the VoIP packet or convert VoIP packets to PCM voice data and amplifying the PCM voice data.
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Citations
25 Claims
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1. A Voice over Internet Protocol (VoIP) system having a dynamic gain control function and a communication path between a first terminal, the first terminal being an extension telephone of a private exchange, and second terminal of a type operating according to an Internet protocol, the communication path comprising a VoIP gateway connected to said private exchange, and a gatekeeper connected between said VoIP gateway and the second terminal, said VoIP system comprising:
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said private exchange transmitting a gain value to said VoIP gateway; and
said VoIP gateway receiving the gain value from the private exchange, storing the gain value, amplifying PCM voice data transmitted from the private exchange according to the stored gain value, transforming the amplified PCM voice data into a VoIP packet, transmitting the VoIP packet to a said second terminal, transforming VoIP packets transmitted from the said second terminal into transformed PCM voice data, amplifying the transformed PCM voice data according to the stored gain value, and transmitting the amplified PCM voice data to said first terminal of the private exchange. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A Voice over Internet Protocol (VoIP) system having a dynamic gain control function and a communication path between a first terminal, the first terminal being an extension telephone of a private exchange, and second terminal of a type operating according to an Internet protocol, the communication path comprising a VoIP gateway connected to said private exchange, and a gatekeeper connected between said VoIP gateway and the second terminal, said VoIP system comprising:
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said gatekeeper transmitting a gain value to said VoIP gateway; and
said VoIP gateway receiving the gain value from the gatekeeper, storing the gain value, amplifying PCM voice data transmitted from the private exchange according to the stored gain value, transforming the amplified PCM voice data into a VoIP packet, transmitting the VoIP packet to a said second terminal, transforming VoIP packets transmitted from the said second terminal into transformed PCM voice data, amplifying the transformed PCM voice data according to the stored gain value, and transmitting the amplified PCM voice data to said first terminal of the private exchange. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of controlling a dynamic gain control function in a Voice over Internet Protocol (VoIP) system having a communication path between a first terminal, the first terminal being an extension telephone of a private exchange, and second terminal of a type operating according to an Internet protocol, the communication path comprising a VoIP gateway connected to said private exchange, and a gatekeeper connected between said VoIP gateway and the second terminal, said method comprising steps of:
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transmitting a call setup message to said VoIP gateway, said call setup message including a gain value;
storing said gain value in a memory of said VoIP gateway;
amplifying PCM voice data transmitted from the private exchange according to the stored gain value, when call setup is completed, transforming the amplified PCM voice data into a VoIP packet and transmitting the VoIP packet to a said second terminal; and
transforming VoIP packets transmitted from the said second terminal into transformed PCM voice data, when the call setup is completed, amplifying the transformed PCM voice data according to the stored gain value, and transmitting the amplified PCM voice data to said first terminal of the private exchange. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification