VOIP over site to site VPN

Question

Im having the no audio issue with a Shoretel IP phone. The server is located in head office behind a 210 and the phone is remote behind an 85w. They are connected via ipsec site to site VPN. Everything is good with the VPN. The phone will connect and get dial tone just fine but no audio on a call. I cant find anything in the firewall logs being blocked for the phone. IPS isn't even applied to the firewall rules 
 
 Where else to look?

Luis Rodriguez · Answer

Hello ViciousMagician1116! 
 This is typically that the packets are not making it to the other end or you may get audio one way but not the other. You can see this if you go under Diagnostics/Packet Capture and then click configure. In the Enter BPF String put in host IP_Address_of_IP_Phone, then click save. Make sure the packet capture it toggled to ON. Below you will see the traffic to and from that IP Phone. You may see some denies or violations and that is where you want to concentrate your efforts by making sure that a firewall rule covers what is being denied or violated. 
 I hope this helps!!