thanks for the ideas.
mac filtering was disabled
plenty of ip availability (starting at 192.168.1.100 with 50 dhcp users possible, we have 6-8 devices is this house)
i don't have any access restriction rules/policies in place. all access all the time.
firewall is enabled, but i don't believe that has anything to do with not getting and ip address assigned.
haven't figured out how to test the static ip idea yet.
although i did notice in: About device > Status > IP address
the phone has an IP address defined here. which is not in the range defined in the router. so I'm heading this direction next. not sure were this one came from.