hello dears, 

i'm using kamailio 5.1 as IMS , and i have the following servers: 

• p-cscf 
• i-cscf-1 ,icscf-2 
• s-cscf-1,scscf-2

i need to do high availability and load balancing between my servers , but i have some questions like do i have to use keepalived or dispatcher module and what the benefits of each one of them ,and on load balancing method should i do it for the register requests or only for invite requests or just for every thing ??