If your business is still running a ShoreTel or MiVoice Connect phone system, now is the time to start planning your next move. Mitel has announced it will officially end development and active support for these platforms on December 31, 2025, leaving businesses with unsupported systems, rising costs, and increased risk. This article will help you understand what’s changing, what to look for in a new provider, and which business phone providers are best positioned to help.  As you consider your options, it’s crucial to familiarize yourself with the business number application process, which can vary significantly among providers. Ensure that the new system not only meets your current needs but also scales with your business as it grows. Transitioning to a new platform early can help mitigate disruptions and allow for a smoother integration of features and functionalities.

What’s Changing with Mitel, ShoreTel, and MiVoice Connect?

In 2017, Mitel acquired ShoreTel and rebranded its platform as MiVoice Connect. While many businesses still refer to it as ShoreTel, the technology has continued under the Mitel brand—until now. In 2025, Mitel will: 

• End development for MiVoice Connect 

• Discontinue updates, security patches, and features 

• Limit support to maintenance-only through 2029 (for select customers) 

The result? Businesses still using ShoreTel or MiVoice Connect will be running outdated systems with reduced support, while also facing rising licensing and service costs. 

Why it’s Critical to Evaluate New Business Phone Providers Now

If you delay your decision until late 2025, you may run into: 

• Rushed migrations and downtime 

• Limited availability of experienced support partners 

• Pricing pressure as legacy system vendors shift priorities 

Switching to a modern VoIP-based business phone provider now gives you time to: 

• Map out a smooth transition 

• Preserve your call flows, extensions, and data 

• Optimize costs and feature sets 

What to look for in a new Business Phone Provider

Whether you’re a healthcare clinic, a law firm, a regional manufacturer, or a multi-location office, here are key criteria to evaluate: 

• U.S.-based, responsive support 

• Experience migrating ShoreTel or Mitel systems 

• Custom VoIP plans that fit your call volume, budget, and structure 

• Compliance-ready features, like HIPAA or call recording 

• Compatibility with existing hardware (where possible) 

• Integrations with Microsoft 365, Zoho, CRMs, etc. 

• Dedicated onboarding and training 

Best Alternatives to ShoreTel and MiVoice Connect in 2025

Below is a snapshot of the most trusted business phone providers to consider:

If you’re a small to mid-sized U.S. business with under 150 employees, Vistanet is one of the few providers offering truly personalized, hands-on support during your transition and beyond. 

Migration Checklist for ShoreTel and MiVoice Users

If you’re planning your migration, here are the key steps: 

1. Audit existing hardware and phone usage 

2. Map your call flows, IVRs, and voicemail trees 

3. Prepare extension and user directories 

4. Plan your number porting process 

5. Back up call data if needed 

6. Schedule migration before Q4 2025 to avoid year-end congestion 

Want help with this? Vistanet offers free assessments for current Mitel and ShoreTel users.

Start Your Migration with a Trusted Business Phone Provider

Don’t wait for service outages or price hikes. If you’re a U.S. business looking to move off of ShoreTel or MiVoice Connect, now is the time to find a trusted business phone provider who understands your needs.  By making the switch now, you can access a wide range of features and services that can enhance your communication capabilities. Look for providers that offer costeffective phone solutions for businesses, ensuring you get the best value for your investment. Don’t miss the opportunity to improve your operational efficiency and customer engagement with a reliable phone system. Research potential providers thoroughly to ensure they offer the features and support essential for your operations. When choosing a phone service provider, prioritize those with a proven track record and positive customer reviews. This decision can significantly impact your business’s communication efficiency and overall productivity.

Ready for a phone provider who works for you?

Contact Vistanet today to schedule your VoIP audit and customized migration plan. 

Vistanet is a family-owned and operated independent end-to-end business phone provider with headquarters in Asheville, NC. Founded in 2011, Vistanet is a local, 8(a) Woman-Owned, HUB Certified, Full Service, Telecommunications provider serving businesses from 1 employee to companies with multiple locations and lines. Visit us at 240 Erwin Hills Road, Suite B, Asheville, NC 28806. Hours: By appointment. Email info@vistanet.co or call 828-645-8777.