A terminal adapter for a telecommunication network having a receiver for multiple HDLC communication channels. The receiver includes a BCC calculator for computing and checking the validity of a received HDLC CNM frame. The terminal adapter further includes a device for detecting the reception of a specific...http://www.google.com.au/patents/US5043989?utm_source=gb-gplus-sharePatent US5043989 - Terminal adapter having a multiple HDLC communication channels receiver for processing control network management frames
