The AsteriskNOW 1.5 distro with Asterisk and subsequent 1.4.25 branch have an issue with only recognizing 2-ll’s in the FreePBX chan_dahdi_additional.conf file. FreePBX writes signaling with 1-l which is recognized in 1.4.22 and 1.6 branches but not the 1.4.24/25 branch. For me it is not a problem(now that I figured it out!!!bang head) since I can go modify the files.