Communication devices, methods and computer readable storage media

摘要

A communication device includes a memory that has a first storage area that stores an identifier of a first communication device, which is in a communication session with the communication device, and a second storage area that stores an identifier of a second communication device, which established a communication session with the communication device. The communication device performs the steps of: notifying the identifier stored in the first storage area to the first communication device, receiving an identifier stored in a first storage area of the first communication device from the first communication device, determining whether the identifier received from the first communication device is stored in the second storage area of the communication device, restricting re-establishment of the communication session with the first communication device when the identifier received from the first communication device is stored in the second storage area of the communication device.

主权项

1. A communication device comprising:
a memory comprising:
a first storage area configured to store an in-establishment identifier of at least one external communication device, which is in a communication session with the communication device, anda second storage area configured to store a history identifier of the at least one external device, which previously established a communication session with the communication device; a controller configured to control the communication device to execute steps of:
transmitting the in-establishment identifier stored in the first storage area to a first external communication device of the at least one external communication device, which is in the communication session with the communication device;receiving a first device identifier from the first external communication device in response to the transmission of the in-establishment identifier;determining whether the first device identifier received from the first communication device is already stored as the history identifier in the second storage area of the memory of the communication device;restricting re-establishment of the communication session with the first external communication device when the first device identifier, received from the first external communication device, is not stored as the in-establishment identifier in the first storage area of the memory of the communication device and is stored as the history identifier in the second storage area of the memory of the communication device after a break in the communication session between the communication device and the first external communication device.