If your phone (example iPhone) doesn’t have complete call forwarding menu, you can use line code, then, to activate and deactivate Call Forwarding, follow this instructions:
Call Forward Immediate - Send all calls to another number instantly. enable: *21 (prefix + number) # call disable: ## 21 # call verify: * # 21 # call
Call Forward No Reply - Send calls that go unanswered. enable: *61 (prefix + number) # call disable: ## 61 # call verify: * # 61 # call
Call Forward Not Reachable conditions - Send calls elsewhere if your phone is off or not in the service area. enable: *62 (prefix + number) # call disable: ## 62 # call verify: * # 62 # call
Call Forward Busy - Send calls that reach a busy signal to another number. enable: *67 (prefix + number) # call disable: ## 67 # call verify: * # 67 # call
To forward call to the operator Voice Mail use: international prefix + your three digit prefix + 20