I have a UC520 with a SIP Trunk and a Cable internet service (16mbps down, 2-3mbps up). I have noticed that at times users are downloading files from fast webservers, it will spike our bandwidth. This leads to poor quality voice calls, or voice calls not working alltogether.
What is the recommended method for configuring a UC520 to provide QoS or traffic shaping/policing/throttling and support a SIP trunk? Ideally I would want dedicated bandwidth for the voice traffic (SIP, RTP, RTCP, etc.) then the leftover would be the remaining internet traffic."traffic shaping" seems to be pretty simple, but I have also seen that it is not recommended for voice traffic. Should I be using LLQ?
Are there any sample configurations out there for this type of setup?