QoS for VOIP in Mikrotik
In the bottom rolls help to give VOIP quality of service
Mikrotik 2.9:
/ip firewall mangle add chain=prerouting tos=104 action=mark-packet new-packet-mark=voip-sip passthrough=yes add chain=prerouting tos=184 action=mark-packet new-packet-mark=voip-rtp passthrough=yes
Mikrotik 3:
/ip firewall mangle add chain=prerouting dscp=26 action=mark-packet new-packet-mark=voip-sip passthrough=yes add chain=prerouting dscp=46 action=mark-packet new-packet-mark=voip-rtp passthrough=yes
Mikrotik 3,2.9
/queue simple add name="VOIP-SIP" interface=all packet-marks=voip-sip priority=1 add name="VOIP-RTP" interface=all packet-marks=voip-rtp priority=1
Example