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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

NEC Phone System Replacement: SL2100 & SV9100 End-of-Life Migration

NEC’s SL2100 and SV9100 phone systems were among the most capable and respected on-premises 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 system business entirely, and NEC phone system support officially ended on March 31, 2026. 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.

Schedule a free consultation →

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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.

Call (800) 857-1517 — answered in under 1 minute →

NEC Phone System 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 Phone System 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 by Replacing Your NEC Phone System

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
$3,999 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 →

NEC Phone System Replacement FAQ

What is happening to NEC phone systems?

In May 2024, NEC announced a complete exit from the on-premises phone system business outside Japan. All NEC phone system sales ended December 31, 2024, and NEC technical support ended March 31, 2026. The NEC SL2100 manufacturing plant has permanently shut down, and hardware is limited to existing reseller and refurbished inventory. In February 2025, Forerunner Technologies acquired NEC’s Americas on-premises business and is continuing software support and licensing through March 2030, but the hardware constraint remains — when components fail and inventory is exhausted, replacement becomes impossible. For businesses still running NEC phone systems, migration to a modern platform is now a matter of timing, not whether.

Is NEC going out of business?

No — NEC Corporation is not going out of business. NEC remains a large, diversified technology company. What happened is that NEC exited the on-premises phone system business specifically. They stopped manufacturing and selling PBX platforms (SL2100, SV9100, SV9500, and UNIVERGE 3C) and will no longer provide technical support after March 31, 2026. NEC continues to operate its UNIVERGE BLUE cloud communications service in partnership with Intermedia. For businesses running on-premises NEC phone systems, though, the practical effect is the same — your hardware platform has been discontinued and a replacement plan is needed.

What is the best replacement for an NEC phone system?

The best NEC phone system replacement depends on what you valued about your NEC system. If you chose NEC for on-premises reliability and hardware ownership, Phonewire’s Hybrid system is the closest modern equivalent — an on-premises appliance with fully managed support. Your existing cabling can typically be reused, your phone numbers port seamlessly, and installation is typically completed in a single day with on-site staff training.

Will my NEC phone system still work after end of life?

Yes — your NEC phone system will continue to function after the end-of-life date. The phones don’t stop working on a specific day. However, NEC technical support ended March 31, 2026, which means no patches, updates, or manufacturer assistance if something goes wrong. More critically, the SL2100 manufacturing plant is permanently shut down, so if a control unit, expansion card, or power supply fails, replacement parts must come from shrinking reseller inventory or the secondary refurbished market. The risk increases over time as inventory depletes. Businesses relying on NEC systems should plan a migration while the system is still functioning, rather than waiting for a hardware failure to force an emergency replacement.

How much does it cost to replace an NEC phone system?

For a typical 20-phone business replacing an NEC SL2100 or SV9100 with Phonewire’s Hybrid system, the all-in cost is approximately $3,999 for hardware (one-time), $699/year for the platform license, and approximately $200/month for SIP trunks — roughly $440/month total. This includes new desk phones, professional on-site installation, staff training, and ongoing U.S.-based support with day-to-day changes at no extra charge. For businesses that prefer cloud-hosted, the cost is $25/user/month with no hardware purchase. In many cases, existing Cat5/Cat6 cabling from the NEC installation can be reused, which eliminates one of the largest potential costs of a phone system migration.

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

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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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