Mitel has announced that MiVoice Connect will reach End of Technical Support on December 31, 2029.
That does not mean a MiVoice Connect system will suddenly stop making calls on January 1, 2030. It does mean organizations should begin deciding how long they intend to operate the platform, how they will support it during the remaining lifecycle, and what communications platform will eventually replace it.
For many organizations, particularly governments, school districts, healthcare organizations, manufacturers, hotels, and multi-location businesses, waiting until 2029 to begin that process could create unnecessary risk.
High Country Workplace Technologies (HCWT) supports existing Mitel and ShoreTel environments and helps organizations develop a practical migration strategy based on their existing infrastructure, phones, applications, analog devices, paging systems, contact centers, and business requirements.
The goal does not have to be an immediate replacement.
The goal should be to have a plan.
Mitel states that MiVoice Connect entered its Product Lifecycle Management Plan and will reach End of Technical Support on December 31, 2029.
This distinction is important.
End of Technical Support does not mean every MiVoice Connect system stops operating on that date. An installed system may continue functioning beyond 2029.
However, continuing to operate an aging communications platform after manufacturer technical support ends can become increasingly difficult. Organizations need to consider software support, replacement hardware, operating-system dependencies, integrations, security requirements, carrier connectivity, and access to technicians who understand the platform.
For that reason, HCWT recommends treating December 31, 2029 as a planning deadline rather than a shutdown date.
Not necessarily.
A properly functioning MiVoice Connect system can still provide reliable communications today.
Organizations should evaluate their individual environment before deciding when to migrate.
For example, an organization with a stable MiVoice Connect deployment, relatively new Mitel phones, reliable SIP services, and few changing business requirements may have good reasons to continue operating the system while planning a future migration.
Another organization may already be experiencing problems such as:
For these organizations, migrating before 2029 may make considerably more sense.
For most MiVoice Connect customers, there are two primary directions worth evaluating.
Organizations that want to remain with an on-premises or private-cloud Mitel architecture should evaluate MiVoice Business.
Mitel specifically identifies MiVoice Business as an upgrade path for MiVoice Connect customers.
MiVoice Business provides a more current Mitel architecture with improved scalability, deployment flexibility, resiliency, and application options.
This can be particularly attractive for organizations that have operational reasons to maintain greater control over their communications infrastructure or that have complex integrations that favor an enterprise PBX architecture.
Another important consideration is endpoint investment.
Many Mitel 6900 Series phones can operate with both MiVoice Connect and MiVoice Business, potentially allowing an organization to preserve part of its existing telephone investment.
Phone compatibility should always be verified by exact model and configuration before developing the migration budget.
For organizations that want to eliminate most of the traditional PBX infrastructure, RingCentral is another logical migration path.
Mitel and RingCentral established a strategic relationship specifically designed in part to provide Mitel customers with a cloud migration path.
A RingCentral migration can eliminate much of the server and PBX infrastructure associated with MiVoice Connect while providing cloud calling, mobile and desktop applications, messaging, video, analytics, integrations, centralized administration, and other UCaaS capabilities.
There is also an important advantage for some existing Mitel customers:
Some existing Mitel phones can be migrated to RingCentral.
That can significantly change the economics of a cloud migration.
In many cases, yes—but this needs to be evaluated carefully.
RingCentral currently supports numerous Mitel models, including models within the 6800 and 6900 families. RingCentral's published compatible-device list includes models such as the 6920, 6930 and 6940, among others.
RingCentral also developed migration procedures for Mitel IP400-series phones.
However, HCWT strongly recommends against assuming that every Mitel phone in an existing MiVoice Connect installation can simply be moved to RingCentral.
The exact model, hardware revision, firmware, existing provisioning and migration procedure matter.
This is particularly important with 6900-series phones.
HCWT has encountered this firsthand during real-world migrations. A migration plan should inventory the actual phones installed—not simply assume that because the front of a phone says "Mitel 6940," every 6940 in the environment is equivalent.
Older hardware revisions may not support the required migration path. Attempting an unsupported firmware or provisioning process can also leave a phone unusable.
HCWT therefore recommends collecting the model, MAC address, hardware revision and current firmware of the existing phone inventory before determining how many phones can realistically be reused.
We discuss this issue in greater detail in our article “Can You Reuse Mitel Phones When Migrating to RingCentral?”
The ShoreTel/Mitel IP400 family deserves separate consideration.
RingCentral has published a migration process for supported MiVoice Connect IP400 phones, and IP400-series support can allow some organizations to preserve existing endpoints during a cloud migration.
However, there is an important practical distinction between “the phone can be migrated” and “the phone should be retained for another five or ten years.”
For example, an older IP480 may be technically usable after migration, but its display, user interface, feature presentation, and overall experience are considerably more limited than those of current-generation phones.
HCWT therefore evaluates phone reuse from both perspectives:
Can we reuse it?
and
Does it make business sense to reuse it?
Sometimes retaining existing phones substantially reduces the cost of a migration. In other situations, replacing older endpoints while migrating provides a better long-term result.
This is one of the most frequently overlooked parts of a PBX migration.
A MiVoice Connect system may support far more than desk phones.
Organizations often discover devices such as:
These devices need to be identified before the old PBX is removed.
Some can be migrated using analog telephone adapters or other gateways. Others may need dedicated analog services or replacement equipment.
The correct solution depends on the application.
A PBX migration should therefore begin with a complete communications inventory rather than simply counting employees and desk phones.
Paging is another area where careful planning matters.
Many MiVoice Connect environments connect to overhead paging equipment from manufacturers such as Valcom or Bogen.
A user may dial an extension or access code that appears simple from the telephone side, while behind the scenes the PBX is providing an analog trunk, station port, SIP connection, relay, or paging interface.
When the PBX disappears, that interface may disappear with it.
Before migrating, HCWT identifies how the paging system is currently accessed and determines how it will connect to the replacement platform.
In many cases, an existing paging system can continue to be used.
The objective is not necessarily to replace the speakers and amplifiers. It is to replace or redesign the interface between the telephone system and the paging system.
Organizations using MiVoice Connect Contact Center or other ShoreTel/Mitel call-center applications should evaluate the contact center separately from ordinary telephone users.
A receptionist, office employee and contact-center agent may all have desk phones, but their communications requirements are very different.
Contact-center requirements may include:
Depending on those requirements, an organization moving to RingCentral may use RingEX for ordinary users while deploying RingCX for departments requiring more advanced contact-center functionality.
The migration therefore does not have to force every employee into the same licensing or application model.
In many migrations, yes.
HCWT generally prefers a planned or phased migration when the customer's environment warrants it rather than treating every project as a single all-at-once cutover.
Depending on the existing carrier services, dialing plan and network architecture, the old and new systems may be able to coexist during portions of the migration.
This can be especially useful for organizations with:
A phased approach also allows the organization to validate call flows, applications, devices and user experience before retiring the existing system.
HCWT does not recommend it.
There is an important difference between waiting to migrate and waiting to plan.
An organization may reasonably decide to operate MiVoice Connect for several more years.
That does not mean it should wait several more years to determine what comes next.
A good migration plan can be developed well before the actual migration.
For example:
2026–2027: Inventory the existing environment, determine business requirements, identify reusable phones, document analog devices and paging, and compare replacement platforms.
2027–2028: Establish budgets, select the future architecture, determine carrier and network requirements, and create a migration strategy.
2028–2029: Execute the migration on the organization's schedule rather than because the technical-support deadline is approaching.
Organizations with budget cycles, board approvals, government procurement requirements, E-Rate considerations, or formal RFP processes may need even more planning time.
Yes.
Organizations do not necessarily need to choose between “keep MiVoice Connect forever” and “replace it immediately.”
HCWT can support existing MiVoice Connect and legacy ShoreTel environments while helping the organization develop its future communications strategy.
That can include troubleshooting, carrier services, SIP connectivity, system changes, phone replacement, network troubleshooting, paging integration, and migration planning.
For organizations whose existing system remains stable, this creates a practical third option:
Support what you have while preparing for what comes next.
Start with discovery—not a product quote.
HCWT recommends documenting:
Once that information is understood, it becomes much easier to compare MiVoice Business, RingCentral, or another appropriate architecture.
It also produces a much more accurate migration budget.
Mitel MiVoice Connect reaches End of Technical Support on December 31, 2029. That does not mean MiVoice Connect systems stop working on January 1, 2030.
But organizations should not interpret that distinction as a reason to ignore the deadline.
The best strategy is to understand the existing environment now, determine which equipment and integrations can be preserved, evaluate the available migration paths, and establish a timetable that fits the organization's operational and financial requirements.
Some organizations may choose to migrate relatively soon.
Others may operate MiVoice Connect for several more years.
Both can be reasonable decisions.
The important thing is that the decision is deliberate rather than forced by aging hardware, an unexpected failure, or an approaching support deadline.
High Country Workplace Technologies has supported ShoreTel and Mitel communications environments for years and can help organizations support their existing MiVoice Connect systems while developing a practical migration path to MiVoice Business, RingCentral, or another appropriate communications platform.
Contact HCWT to begin with an assessment of your existing MiVoice Connect environment and determine what can be retained, what should be replaced, and when a migration makes sense.
Mitel has announced that MiVoice Connect will reach End of Technical Support on December 31, 2029.
Not necessarily. End of Technical Support does not mean installed MiVoice Connect systems automatically stop operating. It means organizations should plan for a future without manufacturer technical support and consider the risks associated with continuing to operate an aging platform.
There is no single replacement that is right for every organization. Mitel identifies MiVoice Business as an upgrade option for MiVoice Connect customers. Organizations wanting a cloud UCaaS architecture can also evaluate RingCentral, which has established migration paths for Mitel customers.
Yes. MiVoice Connect customers can migrate users and services to RingCentral. The exact migration design depends on the existing phones, telephone numbers, carrier services, analog devices, paging systems, call flows, contact-center requirements and network architecture.
Some Mitel 6900-series phones can be used with RingCentral, including supported models such as the 6920, 6930 and 6940. However, HCWT recommends checking the exact model, hardware revision and firmware before assuming an existing phone can be migrated.
Supported Mitel IP400 phones can be migrated to RingCentral using documented migration procedures. Organizations should also consider the age and user experience of these phones when deciding whether reuse makes economic sense.
Usually not. Existing Valcom, Bogen and other paging infrastructure can often remain in service. The interface between the new communications platform and the paging system may need to be redesigned or replaced.
Fax machines, elevator phones, emergency phones, alarms and other analog devices should be identified before migration. Depending on the application, they may be connected through an ATA, gateway, dedicated analog service or replacement solution.
Not necessarily. The appropriate migration date depends on the condition of the existing system, business requirements, budget cycles and risk tolerance. HCWT recommends beginning migration planning well before 2029 even if the organization intends to continue operating MiVoice Connect for several more years.
HCWT supports existing ShoreTel and Mitel MiVoice Connect environments and can help organizations maintain their current system while developing a phased migration plan to MiVoice Business, RingCentral or another appropriate platform. Contact us.
This article was authored by Jim Whitfield