DATA RETRIEVAL DEVICE Russian patent published in 2002 - IPC

FIELD: electric communications. SUBSTANCE: device is designed for data retrieval and identification in digital communication systems including networks for transmitting data on Frame Relay (FR) and High-Level Data Link Control (HLDLC) protocols standardized by International Electric Communications Union as well as for quality control of communication channel and control-based selection of FR or HDLC protocol in data transmission networks incorporating provision for identifying communication protocols FR and HDLC, controlling quality of data exchange using protocol FR or HDLC, and also for identifying change of protocol by remote station. Device has switches, registers, comparison unit, correction unit, retrieval strategy register, deciphering unit, and channel quality control unit. EFFECT: enlarged functional capabilities. 3 cl, 13 dwg