Ninja Number: Why we don't have call forwarding

Our form of call forwarding is done by linking your phone number. Linking phone numbers instead of having call forwarding gives you information on who answered a phone call at what time, who texted a person, and what they said. This is vital for quality assurance purposes, and simple call forwarding doesn't collect that information.

See the article on Ninja Number: Adding linked phones to your Ninja Number.