Background - Our company has Comcast for web and a T1 for VoIP. We are having some local calls going directly to voice-mail which is caused by the network not responding fast enough. I contacted our T1 provider and after a few emails I see the bottleneck is often 184.108.40.206 on PingPlotter and other tracert tools that I have run the past two days. That IP does not show any DNS information but is in the route.
Our T1 network provider starts at 220.127.116.11 and when I opened a ticket with them said the problem is before that IP address.
I have uploaded a screen shot from PingPlotter.