CM and IP Office and MWI

[dthszn]

I have CM 6.3 and IP Office 8.0.16 connected with a h.323 line. I can dial extensions and short codes back and forth with no problems. The problem is that when an outside call comes into the IP Office, it turns on the message waiting indicator light on all of the phones in the main hunt group on the IPO. The light comes on, but there is no message. Once I access the hunt group voicemail, the light goes out. The outside lines in question all terminate in the IP Office and we are not even trying to send them over the h.323 line. We only have the h.323 line there for extension to extension dialing and some IP Office short codes. Any ideas would be greatly appreciated. Thanks in advance.