HP 5412 Switches and MPLS

[matt8520]

I am new to dealing with MPLS. My company purchased MPLS with Century Link to help with our VoIP system. So I have six independent sites that will be using this technology. 

Here is what I am thinking and if is possible need some help with.

I will create VLAN 5, for example, to host all of my VoIP phones at each location. VLAN 5 will have DHCP enabled (IP address: 172.16.0.1 - 172.26.0.30/27 with Default Gateway of 172.26.0.10) 

Now my MPLS IP address is on my production VLAN which is VLAN 3 (IP address 192.168.2.100/24) let's say.

How do I route my VLAN 5 traffic from my VoIP VLAN to the IP address of the MPLS on VLAN 3? Should I use OSPF? 

What information will I need to give to Century Link so this information can be sent down the MPLS to my HQ switch (IP address 192.168.1.100/24) and route out to the internet (Ip address default gateway: 192.168.1.1/24). 

Speaking of the HQ switch how will I route the VoIP traffic once it gets to this location out to the internet?

Any help on this would be great?