In this article we will see Routing between 2 Internal Ports.
To Enable Communication from ADMIN TO VOICE
Click on Policy & Objects -> Firewall Policy -> Click on Create New -> Name: ADMIN TO VOICE -> Incoming Interface: ADMIN -> Outgoing Interface: VOICE -> Source: all -> Destination: all -> Schedule: always -> Service: ALL -> Action: ACCEPT -> Under Firewall / Network Options Disable NAT and Click on OK.
To Enable Communication from VOICE TO ADMIN
Click on Policy & Objects -> Firewall Policy -> Click on Create New -> Name: VOICE TO ADMIN -> Incoming Interface: VOICE -> Outgoing Interface: ADMIN -> Source: all -> Destination: all -> Schedule: always -> Service: ALL -> Action: ACCEPT -> Under Firewall / Network Options Disable NAT and Click on OK.