Cisco Has Retired the UC520 — Plan Your Move Off SBCS
Cisco has retired the UC520 (SBCS) — no patches, no support. Migrate off cleanly with a local Melbourne team and keep your numbers.
Cisco has discontinued and fully retired the UC520 — the entry-level appliance from the Cisco Smart Business Communications System (SBCS), part of the Unified Communications 500 Series for small business. It's listed on Cisco's own site as obsolete, and it's past Cisco's last date of support, so it no longer receives software updates, firmware fixes or security patches. If your business is still running a UC520, the smart move is to plan your migration now, while you have choices. SIP Connect moves you off the UC520 cleanly, onto a modern system that costs less and does more.
The honest situation
The UC520 was the small-end box in Cisco's SBCS range, and Cisco has retired the entire UC500 / Smart Business Communications System line. It won't stop ringing the day support ends — but it sits in a riskier spot than most legacy gear: because Cisco no longer maintains it, any newly discovered flaw will never be patched, and there's no manufacturer support, spare parts pipeline or firmware path left. Cisco's own successor route for former SBCS customers points at Business Edition 6000 or cloud calling such as Webex Calling. Waiting doesn't save money; it just shrinks your options and raises the odds of a forced, rushed cutover.
Why move with a local team
To be clear, SIP Connect does not sell Cisco SBCS — we specialise in migrating businesses off ageing, unsupported systems and onto something built for the next decade. We're vendor-neutral, so we recommend the platform that genuinely fits how you work, not the one we're tied to. We're a 3CX Partner and an authorised Yealink reseller, and when you call, you reach a real person in Greensborough — no offshore call centre, no robots. Our team brings over 80 years of combined industry experience, and customers rate us 5.0 on Google. If you'd rather keep a Cisco-flavoured path, we can also talk through ongoing Cisco IP PBX options.
Your migration options
We move UC520-stranded businesses onto the system that actually suits them:
- 3CX — feature-rich and cost-cutting, hosted or on-premise. Licensed by simultaneous calls rather than per extension, with free inter-office calls and free video conferencing for up to 250 participants.
- Hosted & Cloud PBX — every enterprise calling feature, with nothing on-site to age out or replace. A natural landing spot for a small business coming off an SBCS appliance.
- Microsoft Teams calling — if your team already lives in Teams, Direct Routing turns it into your phone system, with no SBC for you to manage.
Not sure which fits? Start at our phone systems hub or the legacy system replacement guide, and we'll point you to the right one.
A migration planned to avoid downtime
We keep your existing numbers, plan the cutover around your trading hours, train your staff and switch you over cleanly — often in days, not weeks. Whether it's standard lines, 1300 or 1800 numbers or a full number port, we handle it so nothing drops. Coming off the UC520 is also the moment to stop overpaying: our bill reviews have identified savings of up to 65%. Many new platforms run over SIP trunks, which strip out the line rental the old appliance relied on.
One team for phones and the internet underneath
Because we also supply the connection your new system runs on — business NBN, gigabit fibre or 5G fixed wireless, with internet failover if you need calls to survive an outage — the whole setup is tuned to work together, monitored 24/7, and backed by one local team. No finger-pointing between providers when something needs a hand.
Real Connections. Real Easy. Send us a recent bill and we'll show you exactly what a clean move off the UC520 looks like — and what it saves.
Frequently asked questions
Is the Cisco UC520 still supported?
No. Cisco has retired the UC520 and the wider SBCS / UC500 range, and it's listed as an obsolete product. It's past Cisco's last date of support, so there are no more software updates, firmware fixes, security patches or technical support from the manufacturer. That's the main reason to plan your move now.
What should I replace a UC520 with?
It depends on how your team works. Cisco's own successor path points at Business Edition 6000 or cloud calling like Webex Calling, but for most small businesses a modern hosted PBX, 3CX or Microsoft Teams calling is a cleaner, lower-cost fit. We're vendor-neutral, so we'll recommend the one that suits you — not a brand we're tied to.
Will moving off the UC520 disrupt my business?
Done properly, no. We port your existing numbers and schedule the switch so calls keep flowing, and most migrations are live in days, not weeks. Your customers won't notice a thing — except that you answer faster.
What will it cost to move off a UC520?
Usually less than you're paying now. Pricing depends on your team size and the platform that fits, so the honest way to a real number is a free bill analysis. Send us a recent bill and we'll show you the setup and the savings, with no obligation. If we can't save you money, we'll tell you straight.
Get a free bill analysis — and stop overpaying
Send us a recent phone or internet bill. We’ll show you exactly where the waste is — our bill reviews have identified savings of up to 65%.