VoIP terminal capable of facsimile communication and communication method thereof
AssigneeAllied Telesis Kabushiki Kaigha
InventorYutaka Nakajima
Life of this patent
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Abstract
A simple VoIP terminal and a communication method thereof which allow facsimile communication by a VoIP terminal unequipped with H.323D facilities. Whether or not a call request from a facsimile/telephone terminal is followed by a CNG signal is determined. If the CNG signal is detected, G.711 CODEC alone is selected from among a plurality of audio CODECs provided in advance to create a CODEC list. A call request is issued to a calling party with the CODEC list included.
Claims14
A voice over Internet Protocol (VoIP) terminal capable of communication on VoIP for transmitting voice over an Internet Protocol (IP) network, comprising:
- a CNG signal detector for detecting a CNG signal coming from communication equipment connected to the VoIP terminal;
- and
- a capability list modifier for modifying an audio capability list to be presented to a called party when making a call request, depending on whether the CNG signal is detected.
A voice over Internet Protocol (VoIP) terminal capable of communication on VoIP for transmitting voice over an Internet Protocol (IP) network, comprising:
- a connector for connecting communication equipment to the VoIP terminal;
- a plurality of audio CODECs provided in advance;
- a CNG signal detector for detecting a CNG signal coming from said communication equipment;
- a CODEC list creator for creating an audio CODEC list by selecting a predetermined CODEC from among said plurality of audio CODECs when said CNG signal is detected;
- and
- a calling device for issuing a call request including said audio CODEC list.
A communication method of a voice over Internet Protocol (VoIP) terminal capable of communication on VoIP for transmitting voice over an Internet Protocol (IP) network, comprising the steps of:
- determining whether a CNG signal is received after a call request has been received from communication equipment connected to the VoIP terminal;
- and
- modifying an audio capability list to be presented to a called party when making a call request to said called party, depending on whether said CNG signal is received.
A communication method of a voice over Internet Protocol (VoIP) terminal capable of communication on VoIP for transmitting voice over an Internet Protocol (IP) network, comprising the steps of:
- preparing a plurality of audio CODECs in advance;
- determining whether a CNG signal is detected after a call request from communication equipment connected to the VoIP terminal;
- selecting a predetermined CODEC from among said plurality of audio CODECs when said CNG signal is detected;
- and
- issuing a call request to a called party with including said selected predetermined CODEC alone.
A computer program for a voice over Internet Protocol (VoIP) terminal for making a computer perform a communication operation on VoIP for transmitting voice over an Internet Protocol (IP) network, comprising the steps of:
- determining whether a CNG signal is detected after a call request from communication equipment connected to the VoIP terminal;
- selecting a predetermined CODEC from among a plurality of audio CODECs when said CNG signal is detected;
- and
- issuing a call request to a called party with including said selected predetermined CODEC alone.
Dependencies are inferred from the claim text.