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NEC exited the on-premises phone system business — new hardware is no longer manufactured or sold

In May 2024, NEC announced the end of all on-premises UC product sales across its UNIVERGE SL2100, SV9100, SV9500, and 3C platforms, effective December 31, 2024. NEC’s technical support ends March 31, 2026. In February 2025, Forerunner Technologies acquired NEC’s on-premise UC business in the Americas, and has committed to continuing software support and licensing through 2030. However, the SL2100 manufacturing plant is shut down permanently, hardware availability is limited to existing inventory, and the channel ecosystem that serviced NEC customers for decades has fundamentally changed. For small businesses still running NEC systems, the question isn’t whether to evaluate alternatives — it’s when.

NEC UNIVERGE — End of Sales December 2024

Still Running an NEC Phone System? Here’s What Phonewire Recommends.

NEC’s UNIVERGE SL2100 and SV9100 were among the most capable and respected small business phone systems on the market — hybrid analog/digital/IP architecture, reliable hardware, strong voice quality, and a feature set that punched well above their price point. NEC had a loyal following for good reason.

But NEC has now exited the on-premises phone business entirely. Whether you’re running a current-generation SL2100 or SV9100, or an older system like an SV8100, SL1100, Aspire, or XN120, you’re on a platform with a defined end. Phonewire installs fully managed modern phone systems — on-premises and cloud-hosted — and has helped many businesses navigate this transition with their phone numbers intact, their staff trained, and their calls working from day one.

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NEC System Still Running?

If your system is operational, you have time to plan your migration on your terms — before a hardware failure, parts shortage, or support gap forces a rushed decision. Phonewire offers a free assessment with no obligation.

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NEC System Down or Parts Unavailable?

If your system has failed and you can’t source replacement hardware, Phonewire can mobilize quickly — certified installation technicians nationwide, same-day configuration, and your existing phone numbers ported without a service gap.

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NEC UNIVERGE End-of-Life Timeline

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December 31, 2024 — End of new hardware sales. The last date to order new NEC SL2100, SV9100, SV9500, or 3C systems, expansion hardware, phones, cards, and spares from NEC. Any business needing hardware after this date must rely on existing inventory held by resellers or the secondary/refurbished market. Since the Forerunner acquisition, hardware sales were extended through December 31, 2025 from existing inventory — but the SL2100 manufacturing plant is permanently shut down. SV9100 hardware may continue from NEC Japan into 2026 through Forerunner/Optus, but this is not guaranteed beyond existing inventory.

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March 31, 2026 — End of NEC technical support. NEC will no longer provide technical assistance for SL2100 or SV9100 systems after this date. No further OS updates, patches, or security updates. CP-10 CPU support ends December 31, 2025. Systems running CP-10 processors should be considered higher-priority migrations. Forerunner Technologies has committed to continued support through 2030 via their own support infrastructure — but this is a small company taking on support for a large installed base, a different proposition than direct NEC manufacturer support.

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March 31, 2030 — End of software assurance and licensing. Software assurance (if purchased by December 31, 2025) can extend technical support coverage through 2030. Software licenses — including SIP trunks, IP phone licenses, and application add-ons — remain purchasable through March 2030. After this date, the platform will be fully unsupported by any successor entity. For businesses planning to stay on NEC through 2030, ensure software assurance is in place now.

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Legacy systems (Aspire, XN120, SV8100, SL1100) — already EOL. These older NEC models reached end of life before the 2024 announcement. The SL1100 and SV8100 reached end of support in 2019. The Aspire and XN120 have been discontinued for many years. If your business is running any of these older systems, there is no support path remaining and replacement parts are sourced entirely from the secondary refurbished market. Migration should be treated as urgent.

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What the Forerunner Technologies acquisition means for NEC customers

In February 2025, Forerunner Technologies acquired NEC’s on-premise UC business in the Americas. This is genuinely good news for NEC customers who want to stay on the platform — it removes the hard 2026 end-of-support cliff for those who purchase software assurance, extends hardware availability for the SV9100 series, and provides a support path through 2030. The channel will continue through Optus as the primary distributor.

However, for small businesses evaluating whether to invest in extending their NEC system vs. migrating to a modern managed platform, there are real questions: Forerunner is a smaller company than NEC. The SL2100 plant is permanently shut. Hardware availability beyond current inventory is not guaranteed. And the full NEC reseller and certification network that provided local support to businesses nationwide has been substantially disrupted. These are legitimate factors to weigh — not reasons to panic, but reasons to plan deliberately.

What NEC UNIVERGE Users Valued — And What Phonewire Delivers

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Hybrid analog/digital/IP flexibility. The SV9100 in particular was valued for its ability to run analog, digital TDM, and IP extensions simultaneously — a genuine advantage for businesses in the middle of a migration or with mixed infrastructure. Phonewire’s Hybrid system supports SIP trunking alongside existing analog lines during a transition, and our installation team handles the full network QoS configuration required for voice quality on IP.

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Reliable on-premises hardware. NEC systems were valued for hardware reliability and the stability of on-premises infrastructure. Phonewire’s Hybrid installs a modern on-premises appliance at your location — hardware that’s yours, in your building, running your configuration — backed by a flat annual license and Phonewire’s fully managed support. No cloud dependency for the core call handling.

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Voicemail, auto-attendant, and DECT cordless. The SL2100 and SV9100 included strong built-in voicemail, multilevel auto-attendant, and DECT wireless handset support. Phonewire’s platform includes all of these as standard — plus voicemail-to-email delivery, and the Linkus UC client that extends every feature to mobile and desktop.

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A system that works during internet outages. NEC’s hybrid architecture meant calls could continue over PSTN/analog lines when IP connections failed. Phonewire’s Hybrid includes an optional cellular failover add-on — calls automatically route over a 4G LTE backup if your internet connection goes down. Learn how Phonewire handles internet outages →

What You Gain That NEC UNIVERGE Couldn’t Deliver

One company accountable for everything. With NEC systems, your hardware, software licenses, SIP trunks, maintenance contract, and support were typically split across NEC, a reseller, a carrier, and possibly a third-party maintenance provider. When something broke, responsibility was unclear. Phonewire owns the full system relationship — hardware, configuration, numbers, and support — under one contract, one phone number.

Voicemail to email and optional transcription. NEC’s embedded voicemail stayed in the box — you called in to check messages. Phonewire delivers every voicemail as an audio file to your inbox, and with optional human-powered transcription, as readable text you can scan without listening.

Mobile and desktop app — your office extension anywhere. The Linkus UC client turns any smartphone or laptop into a full business extension — same number, same voicemail, presence, call history, and directory. NEC offered a mobile extension capability, but it required additional licensing and was limited compared to a modern UC client.

Flat annual licensing — no per-feature complexity. NEC’s licensing model required separate licenses for SIP trunks, IP phones, voicemail users, UC features, and more — a complexity that grew as you added capabilities. Phonewire’s Hybrid uses a simple $699/year license for up to 20 users, all features included.

Day-to-day changes at no charge. Adding an extension, changing voicemail greetings, updating ring groups, adjusting auto-attendant schedules — these all required a service call or a certified technician with NEC systems. Phonewire’s U.S.-based support team handles all day-to-day configuration changes at no additional charge. Call us and it’s done.

What Phonewire Recommends for NEC Migrations

Best Match for Most NEC Migrations

Phonewire Hybrid System

For businesses that chose NEC specifically for on-premises reliability and hybrid connectivity — it delivers the same ownership model on modern open-standard SIP, with professional installation and fully managed support.

On-premises appliance — hardware at your location
$3,499 hardware (one-time) + $699/year license (up to 20 users)
~$200/month SIP trunks for a 20-user business
Snom, Yealink, Poly, or Panasonic desk phones
Optional cellular failover add-on
Full on-site installation + same-day staff training
U.S.-based support answered in under 1 minute
Day-to-day changes at no additional charge

Learn about the Phonewire Hybrid →

Best for Multi-Location or Remote Teams

Phonewire Cloud-Hosted

For businesses with multiple locations, remote staff, or rapid growth plans — cloud-hosted delivers every feature without on-premises hardware to manage.

$25/user/month — no hardware purchase
Same Linkus UC mobile and desktop apps
Instant scalability across locations
Voicemail to email, call recording, auto-attendant
Microsoft 365 integration
Same U.S.-based support and change service

Learn about cloud-hosted →

Frequently Asked Questions

Can I keep my existing NEC DT-series phones with a new system?

No. NEC’s DT-series desk phones (DT300, DT400, DT430, DT800 series) use NEC’s proprietary signaling protocol — they are not SIP-compatible and cannot be registered on any non-NEC phone system. NEC phones are end-of-life along with the systems they serve. Phonewire provides new desk phones — Snom, Yealink, Poly, or Panasonic — as part of every installation. Panasonic in particular offers a familiar and intuitive handset interface for users accustomed to NEC’s straightforward call handling.

What does the Forerunner Technologies acquisition mean for my NEC system?

Forerunner acquired NEC’s Americas on-premise UC business in February 2025. For businesses that want to stay on their NEC system, this is genuinely helpful — software support and licensing are now available through March 2030, and hardware availability has been extended for the SV9100 series. For the SL2100, the manufacturing plant is permanently shut, so hardware is limited to existing inventory. If you’re evaluating whether to extend your NEC investment or migrate to a modern platform, the key questions are: how old is your current hardware, is software assurance in place, and how confident are you in a smaller third-party support provider for a critical business system?

Can I keep my existing phone numbers when I migrate?

Yes. Your business phone numbers port to the Phonewire system regardless of where they’re currently hosted — POTS lines, a SIP carrier, or any NEC-connected number. Porting typically takes 2–4 weeks. During the transition, your NEC system remains live and call forwarding keeps calls connected. There is no gap in service.

Can Phonewire reuse existing cabling from an NEC installation?

Often, yes. NEC systems used standard Cat5/Cat6 Ethernet cabling for IP phones and standard phone wiring for digital/analog extensions. Both can typically be repurposed for new SIP desk phones, significantly reducing installation cost by eliminating new cable pulls. A Phonewire engineer assesses your existing infrastructure during the pre-installation site survey.

I’m running an older NEC system — Aspire, XN120, SV8100, or SL1100. What are my options?

These systems reached end of life well before the 2024 announcement — the SL1100 and SV8100 in 2019, the Aspire and XN120 even earlier. There is no manufacturer support path remaining and hardware parts are sourced entirely from the secondary refurbished market, which is depleting over time. For these older systems, migration should be treated as a higher priority than for current-generation SL2100/SV9100 users. Phonewire can assess your existing system and provide a specific replacement recommendation and pricing during a free consultation.

How long does a migration from NEC to Phonewire take?

Most NEC replacement installations are completed in a single day. Phonewire’s certified technician arrives on-site, installs all hardware and desk phones, completes QoS network configuration, and conducts end-user training — all before end of business. Number porting happens in parallel over the preceding 2–4 weeks, so your numbers are live on the new system by installation day. Your NEC system is decommissioned that same day.

What Our Clients Say

Phonewire is a big asset for any company looking for professional advice and magnificent hands-on experts. Matt is efficient, reliable, and very detail-oriented. I am extremely satisfied with his cooperation and dedication.

Eduardo J. Vera Executive Director · Catholic Charities Foundation of St. Louis ★★★★★

We chose Phonewire to revamp our phone system. The project was installed on time and to budget. Matt went above and beyond, and personally provided training. I would highly recommend Phonewire.

Craig Eversmann MSSC, LLC ★★★★★

Free NEC Migration Assessment

Tell us what you’re currently running — SL2100, SV9100, or an older model — how many phones, and what’s driving the change. We’ll give you a specific recommendation with all-in pricing. Same day, no obligation.

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