Ok, I've been using Elastix for some time now and would say it is great, except for the whole not always wanting to take incoming calls. I have Elastix setup with my callcentric account and everything is fine, but sometimes during the day if I call my number Elastix will say that the number is invalid, but if I wait 15 to 20 minutes later and try the call again it will go through to the PBX. Yes, Elastix is registered with my sip provider and the call does goes through, but to the error message. I doesn't make sense to me. Btw, the server is hosted in a datacenter by a company called Lylix. Help would be highly appreciated!