Question about networking
- 
 Hi everyone, 
 I have need some advance on new setup network environment.
 Site A (headquarter):WanA–--port-0 ---pfsense firewall(headquarter) 
 WanB----port-1----pfsense firewall(headquarter)pfsense firewall(headquarter)---port2---switch--(office PCs)(e.g. 192.168.10.0/24) Site B(branch): 
 WanA----port-0 ---pfsense firewall(branch)
 WanB----port-1----pfsense firewall(branch)pfsense firewall(headquarter)---port2---switch--(office PCs)(e.g. 192.168.15.0/24) Here is the thing, I have subscribe a leaseline between branch and headquarter . 
 I have an IP phone system in headquarter e.g. 192.168.10.77/24, and branch office have some ip phone 192.168.15.4-8/24What kind of configuration should I setup in order to connect it up from the ip phone(branch) to the ip phone system(headquater) , btw I have successfully configure a gateway failover group for headquarter.And also I use site-to-site to connect to andother branch. Thank you