Ok folks! After going the rounds, we finally had to establish an account w/Avaya. The tech admitted that configs w/embedded voicemail were "rare" which I find curious, in that the "no moving parts" aspect of the entire system appealled to us, and our needs are relatively simple . . .
If queing is turned on for a given group, then with embedded voicemail, group voicemail will be turned off. The way around this is:
1) Turn off queuing.
2) Set the allocated answering interval to some reasonable value. In any case it must be shorter than the queuing value, effectively disabling queuing anyway.
The Avaya technician admitted that the relationship betwwen the two is not documented in either the CD or the help files.
take care! -John