Get a call from an extension to another

Hello! Here is a situation…
An extension rings…Oh! it’s mine!!But i am in the upper floor! Now what?! I am at my sister’s room who has her own softphone and her own extension… Can i pick up the softphone, hit (*) for example and answer to my call, from my sister’s phone ? How this function is called ? Can you give me some guides to make it a reality at my asterisk system?

(My sister and i should be in the same “group”, of-course. Otherwise anyone can get any call he wants from others!!,right?)

Perfectly possible. It’s a feature used all over. I’m forever getting requests at work to group phones on our Meridian PBXs.

I have this set on my Asterisk too.

Check out … ckupgroups to start you off.