This article will outline how to setup traffic shaping on a Meraki to assist with bandwidth management for VoIP
Step By Step:
Login to the Meraki Portal. From the menu on the right select Security Appliance -> Traffic Shaping
Setup your max upstream/downstream bandwidth 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 rule and then add definitions which include the IP, 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 DSCP tagging to do not change DSCP key.