First--I'm not a VOIP or networking professional. Everything I've learned I've learned from your FAQs, guides, and this forum (which is awesome!). So, please excuse me if I ask something silly or am missing the 500 pound gorilla in the room. I am a running v2.0.1618.0 on my personal PC (XP Pro SP2, Intel 2.61GHz, 2Gig of RAM). I have two Grandstream 2000 SIP phones connected to a D-Link DIR-625 router on an internal network, configured per your manual. I use Broadvoice as my VOIP provider (single line for 2 extensions); however, I just made this change from Time Warner Cable Digital phone service and am running through their Webstar phone/cable modem until service is canceled. My issues: I'm confident that my configuration is correct, because 85% of all inbound/outbound calls work perfectly fine. IVR works. VM works, etc. I've been using VQManager and consistentlly get good results (QoS=4.4; avg 4.3 on testmyvoip.com). I also have excellent bandwidth through an upgrade in my cable subscription. Unfortunately, I'm having completely random problems such as: --Dropped calls --Connection is so poor, I get asked to call from a different number --Callers tell me they dialed my extension, but got an error message --Voice quality garbled during call for brief periods (and seems to be related to PC resources, but not sure) --Phone occasionally doesn't dial the correct number (yes, I made sure I wasn't mis-dialing) --Can't regularly use the keypad to select choices on others' prompt menu I have tried without success to replicate these issues to no success. I've attempted to isolate my system components individually (software, phone, router) but came up empty. I'm really at a loss on what to do about these pesky quirks. Then, my questions: 1. Is it an issue to be running the software on a non-dedicated machine (i.e., one that I'm also using for work/browsing/etc.)? 2. If not, should I somehow up the processing priority for the software? 3. Could the Time Warner Digital Phone modem somehow be causing issues? 4. Is my expectation for less than 1% error rate unrealistic for free software? 5. Am I missing something obvious? Any insight or assistance would be greatly appreciated. I'm trying desperately to get this to work for my business, but with its current performance I'm considering scrapping the whole system (which I hate to do b/c I've invested HOURS upon HOURS in getting it to work). Finally, thanks to the 3cx support team and this forum, I couldn't have gotten this far without you.