Abstract: The present invention provides a system with a plurality of Bluetooth dongles connected to a single host. Each dongle is connected to a different port on the host and each dongle can accommodate a piconet of up to seven Bluetooth devices. The host communicates with the Bluetooth devices via Bluetooth channels. The host includes an application layer, a Host Control Interface (HCI) layer and an interface device driver layer. An Interface Map Table (IMT) is stored in the host. The IMT associates each port on the host with the BD address of a particular Bluetooth dongle and with the channels associated with the particular dongle. The HCI layer and the Interface handler layer consult the IMT to direct commands and data to the correct port on the host.

Abstract: The present disclosure relates to a database (DB) synchronization apparatus of a transmission network system which includes a plurality of network elements (NEs) and an Element Management System (EMS). Each of the NEs may include a common memory in which DB information and alarm state information are rearranged and a sync-related memory of the same pattern as the common memory for maintaining DB identity with the EMS. The EMS may include a EMS sync-related memory for storing the DB and the information of the sync-related memory of the plurality of NEs, and a EMS common memory corresponding to the common memory (CM) of the NE. A common memory which reflects database information and the current alarm information to the NEs, and a sync-related memory which stores data prior to a T-second period are built on the NEs, and these two memories are compared in block units to thereafter transmit only modified block data to the EMS.

Abstract: The present invention provides a system with a plurality of Bluetooth dongles connected to a single host. Each dongle is connected to a different port on the host and each dongle can accommodate a piconet of up to seven Bluetooth devices. The host communicates with the Bluetooth devices via Bluetooth channels. The host includes an application layer, a Host Control Interface (HCI) layer and an interface device driver layer. An Interface Map Table (IMT) is stored in the host. The IMT associates each port on the host with the BD address of a particular Bluetooth dongle and with the channels associated with the particular dongle. The HCI layer and the Interface handler layer consult the IMT to direct commands and data to the correct port on the host.

Abstract: An apparatus and method for measuring the bit error ratio of a transmission system is provided, which can accurately report the degradation of the service quality of a line to an operator by accurate BER calculation under an exceptional situation where an excessive error is instantaneously generated. This is preferably accomplished by storing the number of bit errors in buffers at an interval of time T, scoping these buffers by a sliding window of a preset size, and judging whether or not an E-BER alarm is generated using the average number of bit errors of the scoped sliding window buffers. In addition, it is also possible to intermittently report an error repair situation under which an error is generated by scoping buffers by a sliding window of a set size and judging whether or not an E-BER alarm is cleared using the average number of errors of the scoped sliding window buffers, for thereby accurately and rapidly operating the system.