Jun 03, 2007 · In the current implementation of both Ring Groups and Follow-Me, the primary extension is defined as the first extension listed in the Extension/Follow-Me List. Now, after you have implemented the “-prim” version of your favorite Ring Strategy , the same call comes in while you are on the phone. Nov 21, 2014 · "User Extension" - this should be set to the phones extension number. For me this would be between 201 and 206. should match "line1_name" in SIPXXXXXXXXXXXX.cnf; Display Name - Should be the same as was set in the line1_shortname attribute in the SIPXXXXXXXXXXXX.cnf file. You know, the name of whoever owns this phone - or where it is.