noun
call forwarding feature
Technical term used in computing and telecommunications for a function that forwards incoming calls to another number.
このスマートフォンには着信転送機能が搭載されている。
This smartphone is equipped with a call forwarding feature.
転送 is the general term for forwarding or transferring; 着信転送機能 specifically refers to the call forwarding feature.
Compound of 着信 (incoming call) + 転送 (forwarding) + 機能 (function).