The clock is ticking. On December 31, 2025, Mitel will officially end all software development and licensing for MiVoice Connect (formerly ShoreTel). If your business relies on this platform for voice communications, the changes ahead will impact your ability to grow, adapt, and stay secure.
This isn’t just a standard “end of support” announcement. That sense of finality will arrive later in 2029. The 2025 deadline is about something much more immediate:
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No new licenses for additional users, devices, or SIP trunks
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No software updates or security patches
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No compatibility with future operating systems or browsers
In other words, your phone system will be frozen in time while your business (and the threats you face) continue to evolve.
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1. What Happens When Licensing Stops?
When the licensing door closes at the end of 2025, you won’t be able to:
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Add new employees to the system
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Replace or upgrade phones that require SIP licenses
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Expand to new offices or remote locations
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Migrate to modern SIP trunking from traditional phone lines
Even if you have the hardware ready to go, it unfortunately won’t matter. Without a valid license, those devices simply won’t work. Your MiVoice Connect system will become a fixed asset with no room for growth.
2. Security Risks After December 31, 2025
When software updates stop, cyber risk escalates quickly. MiVoice Connect depends on a stack of technologies including MySQL, Linux, OpenSSH, and IIS that require ongoing patching to remain secure.
After the deadline:
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Unpatched vulnerabilities will go unaddressed
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Incompatibility with new OS versions could break softphones and management consoles
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Loss of browser support may prevent you from administering your system at all
Unsupported systems are a prime target for attackers especially those looking for overlooked entry points into business networks.
3. The Business Impact: From Flexibility to Lock-In
Beyond the security concerns, MiVoice Connect EOS creates operational limitations:
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No ability to scale during hiring or business expansion
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No modernization options to keep pace with remote or hybrid work needs
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No support for future telecom infrastructure changes
If you plan to grow, move, or upgrade your communications in 2026 or beyond, staying on MiVoice Connect will hold you back.
4. Why Now Is the Time to Plan Your Migration
Delaying action past December 2025 isn’t a neutral decision for your business. Not taking steps forward results in a gamble with your organization’s security, uptime, and agility.
Many organizations are using this transition as an opportunity to move to cloud-native, secure, and scalable communication platforms like Elevate:
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Built-in security and regular updates
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Modern SIP device support with no license headaches
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Full support for hybrid and remote teams
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Easy scalability for future growth
Special Offer: Migrate to Elevate before October 31 and get your first month free.
Final Word
The MiVoice Connect End of Sale is a turning point for how your business communicates and protects itself from risk. The decisions you make now will determine whether you’re prepared for 2026 and beyond.
Start your migration conversation today and secure your business’s communications before the deadline.
At Harbor IT, we help organizations migrate off legacy systems without downtime, disruption, or hidden costs. Our risk-first approach ensures that your communications platform is not only functional but also secure and compliant from day one.
