Our company has a phone answering service. We want to have the incoming calls ring our users and after a timeout (not picked up by one of our users) forward the call over to the answering service phone number. This way we never miss a call. The IVR system will not work for us as our 20+ year old phone numbers are in Twillio and GHL's IVR system only works with LC phone numbers. Currently, the forwarding feature in the edit phone numbers section immediately forwards the incoming call to the specified number.