Juniper routers QoS settings for VoIP traffic (SIP based)
Posted on 2011-02-10
I have a new setup on Juniper routers for VoIP that is not working so well with quality of service. Typically we use our VoIP setup and control the router which is Sonicwall. In this case, we have little configuration control so looking for best practices for Juniper routers when setting up QoS for VoIP traffic. We have a Vertical Wave phone system in Atlanta with remote IP phones in Utah. There is a site to site VPN tunnel at the router level. Both sides are Juniper routers and the call quality is often perfect and then other times terrible. Clearly a bandwidth management issue. I will update this question tomorrow with exact make/model on each side for the Juniper routers. We are using traditional SIP protocol based IP phones in the remote location but they are traversing through a VPN tunnel rather than purely open on the WAN side. The core side where the phone system is has a minimum of a 3.0 Mbps bonded T-1. Will validate what is on the other side but it is at least a 1.5 Mbps T-1 with only 5-6 people behind it. Any help is appreciated.