Forwarded calls come back to my voicemail

Scenario, you have your calls set to forward to a coworkers extension, but if they miss the call, the caller comes back to YOUR voicemail box.

When forwarding calls to a 4-digit extension or 10-digit number within your organization's phone system, if the forwarded call is not answered by a person, the voicemail message is left on the phone of the originally dialed number, not the phone of the forwarded number.

To forward calls AND voicemails to another phone number, you must add a "1" before the desired 10-digit number to process the call outside of your organization's phone system.