Is it possible to change the call delay when you call or transfer to a mobile extension?

The problem we have now is that when we dial a mobile extension it rings 3 times before the call actually hits the mobile phone linked to the extension.

We have set "Call forward ring both" on all the people that have both a desktop and a mobile extension and the same thing happens.

We would like it to start calling right away, without delay.

Help, please! Thanks!