SMDR (Station Message Detail Recording) aka CDR (Call Detail Recording) is pretty simple. The command to setup is "change system-parameters cdr" The location of the CDR dump will depend on the system that you have. For G3si, once you specify the format type you can direct the output to the DCE port on the rear of the PBX by specifying "eia" as the output extension. If your EIA port is in use you can also set up a data mod (ex. 8400B) and specify the data mod extension number for output. If you change the format type to custom and additional page will populate allowing you to build your CDR stream from scratch.
Chapter 13 of Installation for Adjuncts and Peripherals (555-233-116) goes into great detail on hooking up CDR. It's a large document but you can download it here:
http://support.avaya.com/elmodocs2/d...2/233116_2.zip