Best Routing protocol for VoIP
Using the pf Sense for routing - 1) what is the default layer 2 routing protocol? 2) What is the best routing protocol to use for VoIP and can you use it on the pfSense router and how do you change the routing protocol on the router ?
"what is the default layer 2 routing protocol? "
Layer 2 does not have a concept of routing as such. VoIP does not really care how packets are routed either. Perhaps you would be better off describing what your problem really is or what you are trying to achieve. Either way, this is the wrong forum.