How i will divert the landline to other number i'm using iphone?

How i will divert the landline to other number i'm using iphone?

You can't devert simply you have to contact costmer care.

This is called CALL FORWARDING, and is chargeable as outgoing call. Call up your Landline Customer Care, and tell them the number, to where the calls are to be forwarded, and in what circumstances. Example, on busy / unanswered etc.