From the menu on the right, select Security Appliance-> and then Traffic Shaping.
Setup your max upstream/downstreambandwidth using the 95/5 rule.
Take the advertised speed and set 95% as the max available bandwidth. Since the upstream bandwidth is not always consistent and can differ (usually around 5%), this should set a safe limit. If you wish to be more conservative, set it to 90%.
At the bottom of the page, Click on Add a new shaping ruleand then .
Now click, Add+ to add definitions which include the IP , addresses listed below and the type of service. , SIP (Voice) should shape both SIP signalling and SIP RTP..
54.148.70.218
54.149.90.30
52.11.88.63
54.148.57.6
Make sure that you set
SIP (Voice)
Ensure that DSCP taggingis set todo "Do not change DSCP key".
Give this a priority of highSet the Priority to High.