TRANSFER DEVICE, TRANSFER METHOD FOR TRANSFERRING SOUND SIGNALS IN DIFFERENT COMMUNICATION SYSTEMS

1 . A transfer device comprising:

a first reception unit that receives a sound signal destined to a second terminal device in a second communication system supporting one way communication from a first terminal device in a first communication system supporting two way communication;

a first transmission unit that transmits the sound signal received in the first reception unit to the second terminal device;

a second reception unit that receives a sound signal destined to the first terminal device from the second terminal device;

a second transmission unit that transmits the sound signal received in the second reception unit to the first terminal device; and

a storage unit that stores the sound signal received in the first reception unit if the second transmission unit is transmitting the sound signal received in the second reception unit, wherein

if the sound signal is started to be stored in the storage unit while the second transmission unit is transmitting the sound signal received in the second reception unit, the second transmission unit reduces a speech speed in transmitting the sound signal received in the second reception unit,

the first transmission unit transmits the sound signal stored in the storage unit when reception of the sound signal in the second reception unit is completed, and

the second transmission unit adjusts the speech speed so that a point of time when transmission of the sound signal received in the second reception unit is completed approximates a point of time when transmission of the sound signal in the first transmission unit is completed.

2 . The transfer device according to claim 1 , wherein

even if the reception of the sound signal in the second reception unit is completed while the storage unit is storing the sound signal received in the first reception unit, the storage unit continues to store the sound signal received in the first reception unit, and

the first transmission unit transfers the sound signal in the storage unit in the order of storage when the reception of the sound signal in the second reception unit is completed.

3 . A transfer device comprising:

a first reception unit that receives a sound signal destined to a second terminal device in a second communication system supporting one way communication from a first terminal device in a first communication system supporting two way communication;

a first transmission unit that transmits the sound signal received in the first reception unit to the second terminal device;

a second reception unit that receives a sound signal destined to the first terminal device from the second terminal device;

a second transmission unit that transmits the sound signal received in the second reception unit to the first terminal device;

a storage unit that stores the sound signal received in the first reception unit while the second transmission unit is transmitting the sound signal received in the second reception unit; and

a detection unit that detects reception of the sound signal in the first reception unit while the second transmission unit is transmitting the sound signal received in the second reception unit, wherein

the first transmission unit transmits the sound signal stored in the storage unit when the reception of the sound signal in the second reception unit is completed, and

when the detection unit detects reception, the first transmission unit transmits a control signal to the second terminal device.

4 . A transfer method comprising:

receiving a sound signal destined to a second terminal device in a second communication system supporting one way communication from a first terminal device in a first communication system supporting two way communication;

transmitting the sound signal received from the first terminal device to the second terminal device;

receiving a sound signal destined to the first terminal device from the second terminal device;

transmitting the sound signal received from the second terminal device to the first terminal device; and

storing the sound signal received from the first terminal device in a memory if the sound signal from the second terminal device is being transmitted to the first terminal device, wherein

if the sound signal is started to be stored in said storing in the memory while the sound signal received from the second terminal device is being transmitted, said transmitting to the first terminal device reduces a speech speed in transmitting the sound signal received from the second terminal device,

said transmitting to the second terminal device transmits the sound signal stored in the memory when reception of the sound signal from the second terminal device is completed, and

said transmitting to the first terminal device adjusts the speech speed so that a point of time when transmission of the sound signal received from the second terminal device is completed approximates a point of time when transmission of the sound signal in said transmitting of the sound signal stored in the memory to the second terminal device is completed.

5 . A transfer method comprising:

receiving a sound signal destined to a second terminal device in a second communication system supporting one way communication from a first terminal device in a first communication system supporting two way communication;

transmitting the sound signal received from the first terminal device to the second terminal device;

receiving a sound signal destined to the first terminal device from the second terminal device;

transmitting the sound signal received from the second terminal device to the first terminal device;

storing the sound signal received from the first terminal device in a memory if the sound signal from the second terminal device is being transmitted to the first terminal device;

transmitting the sound signal stored in the memory to the second terminal device when reception of the sound signal from the second terminal device is completed; and

detecting reception of the sound signal from the first terminal device while the sound signal received from the second terminal device is being transmitted to the first terminal device, wherein

said transmitting of the sound signal stored in the memory to the second terminal device transmits a control signal to the second terminal device when said detecting detects the reception.