Siemens / Unify HiPath End of Life & Replacement

System type

PBX (HiPath / HiCom, legacy OpenScape)

Status

End of life

Manufacturer support

Ended / ending

In service

1990s–2010s

The Siemens HiCom and HiPath systems — later carried by Unify, then Atos, and now Mitel — are end of life. Legacy HiPath 3000/4000 platforms and their optiPoint and OpenStage phones are well past their prime.

With the product line changing hands repeatedly, the safest move is off it entirely. fvoip ports your numbers, rebuilds your call flows in the cloud, and gives every user modern mobile and desktop apps.

Why it's time to move.

Repeatedly orphanedSiemens → Unify → Atos → Mitel: the HiPath line has changed owners several times and legacy versions are end of life.
Proprietary optiPoint/OpenStage setsThese handsets are locked to HiPath and won't move to an open SIP platform.
Scarce parts and skillsHiPath cards and the specialists who program them are both increasingly rare.
On-prem maintenance burdenCabinets, power, and gateways to keep alive — all removed by moving to the cloud.

End-of-life and support details reflect published information at the time of writing and can change — always confirm current status with the vendor.

Your migration, step by step.

We rebuild your call flows on fvoip — auto-attendant menus, ring groups, business hours, and voicemail boxes — while Siemens / Unify HiPath keeps answering. You test everything on temporary numbers, and we port the real numbers only once you sign off. If anything looks wrong, the old system is still there.

See our full Mitel migration guide →

What you keep

Your phone numbersWe port every direct-dial and main line to fvoip — callers keep reaching you at the same numbers, with no gap in service.
Your extensions & menusWe rebuild the extension map, auto-attendant, ring groups, and business hours your team already knows.
Business continuityfvoip runs in parallel with the old system and cuts over only when you approve — phones never stop ringing.
Compatible SIP phonesReuse standards-based SIP desk phones where possible, or rent auto-provisioned handsets from $8.99/mo.

Other retired systems we migrate.

See all migration paths →

Frequently asked questions

Who supports Siemens/Unify HiPath now?

The line moved from Siemens to Unify to Atos and now sits with Mitel. Legacy HiPath platforms are end of life — confirm your specific system's status, but there is no forward roadmap for the older versions.

Can I keep optiPoint or OpenStage phones?

They're proprietary to HiPath and generally won't register to fvoip. Use them until cutover, then move to SIP phones you can rent from $8.99/mo.

Will we keep our numbers?

Yes. We port every number and rebuild your auto-attendant and extensions on fvoip before cutover.

Ready for a phone system that just works?

Set up in a day. Keep your numbers. Cancel anytime — every plan is month-to-month with a 30-day money-back guarantee.

Get started with fvoip →

Time to retire Siemens / Unify HiPath.