Voice VLAN / DHCP issues

You have a mix of incomplete VLAN-aware bridge setup plus some ethernet switch setup, use one or the other.

Unless you particularly need wire-speed connectivity between ports with the same VLAN ID on a switch chip it is best to use a VLAN-aware bridge, see http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1 http://forum.mikrotik.com/t/routeros-bridge-mysteries-explained/147832/1 and https://help.mikrotik.com/docs/display/ROS/Bridge#Bridge-BridgeVLANFiltering. For hardware switching see https://help.mikrotik.com/docs/display/ROS/Bridge#Bridge-BridgeVLANFiltering and https://help.mikrotik.com/docs/display/ROS/Layer2+misconfiguration#Layer2misconfiguration-VLANfilteringwithmultipleswitchchips.