I have 4 BCM 50s networked to a BCM 400 3.7. The 400 is providing Voicemail for the stations in the 50s and they can receive their VM and the MSG IND works great...but I was thinking that the remotes should be able to F986 and F980, etc. I've tried F986, F980, *986, *980, ( Link, F71 ) *986, (link) F986 and none of these combinations work. Any ideas?