Question Related with Vlan Tagging for ISP usage

Hello,

I would like to ask if some one could give me a clue on where can I start finding information about vlan usage for isp core router.

I have a core mikrotik router and want to deploy an FTTH network providing internet and voip service. I have build the whole network but i would like to know where can i find good practices about this type of deployments. (has been working with mikrotik routers for years but never had the chance to design a network with vlan taggings).

I have created a bonding balance interface between 2 ports that will see the OLT. Vlans 10 (internet) and 20 (voip) has been assigned to the interface but i dont know how to think the trank that i will have to the OLT

Sorry if there are bad sentence, english is not my first lenguage.

thanks

Alex.