Hello. I have Mikrotik RB3011. Two VLAN subnet, VLAN1=172.21.128.0/24 and VLAN20=172.21.150.0/28 . Phone Station Panas TDE200 is in VLAN1 172.21.128.19. Phone NT321 is in 172.21.150.5. The problem is that the one-way communication. IN Nat and firewall especially no blocking rules. Tell me, what could it be?