Hi: Reading this forum i'm affraid that delaying in calls is a common problem. I have 3CX (latest version) running on Windows 2003 Storage Server with two Xeon processors and 2 Gb RAM. I have in mind that calls delaying does not owe to the computer. When we call to external numbers (and internal betwen extensions is the same but 0.5-1sec) good sound but there is about two seconds of delay in the conversation, yes, the time between the sound arrives from one to the other party in both directions. This problem does not happens calling directly (without 3CX). It's sounds like can be while coding/decoding the sound. Anybody can help me ?.