So, I'm having an issue with VOIP. My office HQ has a Cisco RV042 with a site-to-site VPN to a store that uses a Cisco RV016. The phone system is in the office. The phone system is a Vertical Wave IP 500. My issue is that phone calls from the store going out or coming in from anywhere are choppy.
The routers are set up with high priority of SIPPER UDP 5060. But, the phone system uses SIP. I don't see a way to make SIP higher priority for traffic. There is a way to create a priority according to certain ports, but doesn't SIP change its port frequently? Like, one call will be on one port and then the next will be on a different port?