This deal has got me confused. My dial plan rings my ATA186 on all incoming calls. If I don't pick up, it goes to voicemail. Under either of those circumstances, the callerid screen on my phone stays blank, and the message waiting indicator does NOT come on. But anytime a call comes in for me while I'm already talking on the phone, BOTH of those things happen. . . So what do I need, I wonder, to get CID to register, and the MWI light to go on, during cases when I am either here and pick up, or (in the latter case) when I'm gone and voicemail picks up. Thanks. B.