FYI - OpenStage phones are end of life. End of development support for HFA ends 10/31/2021 and SIP 6/29/2020. They are scheduled to be completely phased out by 11/5/2023 for HFA and 6/29/2022 for SIP.
The OpenScape Desk Phone IP series is also on the end of life list, but further down the road. Order stop for expansions 6/29/2020, end of development support 6/29/2023, and phase-out 6/29/2025.
It looks like they're going to be sticking with the OpenScape Desk Phone CP series as there are no dates listed for order stop on those.
LoPath
Maintain HiPath 4000 V5 & V6, OpenScape Xpert V4 & V6, OpenScape Xpressions V7, OpenScape Contact Center V8, OpenScape Voice V9