I am using FreePBX distro 1.88.210.57-1. I have posted there as well, however, I have also tested it on a couple PBX in a Flash systems running various versions of Asterisk and Dahdi with the same results. I am using Sangoma FXS ports. When I call from one of the FXS ports to another internal SIP extension the Caller ID shows unknown. I believe this is a known issue, but I thought it was supposed to be fixed in one of the recent versions of asterisk or dahdi, but it doesn't look like it. Has anyone gotten this fixed? If so, how? I really need it to work for call routing purposes.