Voice over internet protocol gateway and a method for controlling the same
AssigneeSamsung Electronics Co., Ltd.
InventorsDae-Hyun Lee, Jung-Gi Kim
Life of this patent
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Abstract
A voice over Internet protocol (VoIP) gateway includes a foreign exchange office (FXO), a foreign exchange station (FXS), and a VoIP processor. A controller of the VoIP gateway sets the VoIP gateway to either a TANDEM (trunk and ENM (ear and mouth)) mode or a standalone mode. In the TANDEM mode, the VoIP gateway transmits an incoming call from the VoIP processor to the FXO and an outgoing call from the FXS to the VoIP processor. In the standalone mode, the VoIP gateway transmits the incoming call from the VoIP processor to the FXS and the outgoing call from the FXS to the VoIP.
Claims14
A method for routing a call in a system comprising a first voice over Internet protocol (VoIP) gateway connected to a first exchange comprising a first foreign exchange office (FXO), the first VoIP gateway comprising a first foreign exchange station (FXS), and a second VoIP gateway connected to a second exchange comprising a FXO and a FXS, the second VoIP gateway comprising a second FXO and a second FXS, the method comprising:
- transmitting, by the second exchange, a call to the second VoIP gateway through the FXO of the second exchange in response to the call being set up;
- transmitting, by the second VoIP gateway, the call to the first VoIP gateway in response to receiving the call;
- and
- transmitting, by the first VoIP gateway, the call to the first FXO of the first exchange in response to receiving the call,
- wherein the first exchange comprises no foreign exchange station.
A call routing system comprising:
- a first exchange comprising a first foreign exchange office (FXO) and no foreign exchange station;
- a first voice over Internet protocol (VoIP) gateway connected to the first exchange, comprising a first foreign exchange station (FXS);
- a second exchange comprising a FXO and a FXS;
- and
- a second VoIP gateway connected to the second exchange, comprising a second FXO and a second FXS,
- wherein the second exchange transmits a call to the second VoIP gateway through the FXO of the second exchange in response to the call being set up, the second VoIP gateway transmits the call to the first VoIP gateway in response to receiving the call, and the first VoIP gateway transmits the call to the first FXO of the first exchange in response to receiving the call.
Dependencies are inferred from the claim text.