This program is a demo application for BitLevelTrace software library (with full C source code) that allows a calling user application to convert raw communication protocol data into a fully decoded readable trace text. Decoded protocols include LAPD (Q.921), LAPF (Q.922), ISDN call control (Q.931), X.25, 802.3 Ethernet and IP (IP, TCP, UDP, ICMP). Also decodes nested protocols: X.25 over LAPF; Q.931 over LAPD; TCP, UDP & ICMP over IP over 802.3 Ethernet. Supports different trace levels: (Basic Trace, Detailed Trace, Hex Dump). BitLevelTrace library API functions take raw binary communication data as parameters and perform protocol decoding and conversion into a readable ASCII trace text, according to specified trace level. The resulting ASCII trace text is copied to a different buffer, supplied with the function call. Benefits: Facilitates the development of trace related features; Shortens time-to-market of your product; Frees-up development resources from tedious coding and allows their re-direction to core development; flexible, portable architecture, easy integration into PC based or embedded environment)