You might have Call Forwarding enabled. Call Forwarding will bypass voicemail and send calls to the forwarded number. To edit your Call Forwarding settings:
1. Log in to VoiceZone.
2. Select the Settings tab.
3. Select the Call Forwarding link in the left-hand menu.
4. Review the Call Forwarding options you have enabled.
5. Make the necessary changes to forward calls to voicemail under the conditions you choose.