not sure what is going on here, but every so often, maybe 1 in 3 attempts to call voicemail from an extension goes to extension #18. Tried to reboot and still has the same problem. Actually, after rebooting, extension #18 will ring 5-6 times, then if you pick up, you hear numbers dialing. You hear numbers as well when the voicemail phenomenon occurs. Any idea why this is happening and what do I need to do to stop it?