broadconnectauthor2How to Migrate from Telstra Calling for Office 365 to Microsoft Teams Calling
If your business currently uses Telstra Calling for Office 365, it’s important to plan how your external calling, business phone numbers, and call flows will operate after moving away from the service. A successful migration involves more than simply changing providers. You’ll need to understand your current Microsoft Teams calling environment, choose the most suitable replacement, prepare your business numbers for migration, and thoroughly test the new setup before completing the transition. To learn more about available Teams calling solutions, explore our Microsoft Teams & Flex.
What Changes When You Move Away from Telstra Calling for Office 365?
Moving away from Telstra Calling for Office 365 doesn’t mean replacing Microsoft Teams itself. Instead, you’re replacing the service that provides external calling connectivity while continuing to use Microsoft Teams for collaboration and business communications. The migration focuses on ensuring your users can continue making and receiving business calls using an alternative Teams-compatible calling solution. This includes reviewing your existing phone numbers, call routing, licensing, and telephony requirements before selecting the right replacement.
For more information about the service withdrawal, read our Telstra Calling for Office 365 Is Ending.
Before You Migrate: Audit Your Existing Teams Calling Setup
Before making any changes, document your current Microsoft Teams calling environment to reduce the risk of missing important configurations during the migration.
Review your existing setup, including:
- Microsoft Teams users
- Existing business phone numbers
- Main business numbers
- Direct dial numbers
- Call queues
- Auto attendants
- Call forwarding and routing
- Reception requirements
- Desk phones and devices
- Contact centre integrations
- Microsoft licensing
- Remote and hybrid workers
Having a complete record of your existing environment makes planning, testing, and migration much easier.
Learn more about Microsoft Teams telephony with our Microsoft Teams & Flex .
Choose Your Microsoft Teams Calling Replacement
There are several ways to replace Telstra Calling for Office 365, and the right solution depends on your business requirements, existing infrastructure, and future communications strategy.
| Option | Consider When |
|---|---|
| Direct Routing | Your business requires greater telephony flexibility or integration |
| Operator Connect | You prefer an operator-managed Microsoft Teams calling solution |
| Other supported Teams calling arrangement | Your environment suits another compatible Microsoft Teams calling model |
The best approach depends on your users, existing phone numbers, call routing requirements, Microsoft licensing, and technical environment.
How to Migrate from Telstra Calling for Office 365?
A structured migration helps minimise downtime while ensuring business communications continue operating as expected.
- Document your existing Teams environment, including users, numbers, licences, and devices.
- Select the Microsoft Teams calling solution that best suits your business.
- Confirm Microsoft licensing and Teams configuration requirements.
- Prepare business phone numbers for migration and verify porting eligibility.
- Recreate call queues, auto attendants, routing, and other important call flows.
- Test inbound calls, outbound calls, business numbers, and user functionality.
- Complete the migration and verify everything is operating correctly.
If you need expert assistance, explore our Microsoft Teams & Flex (Attach internal link here).
Can You Keep Your Existing Phone Numbers During the Migration?
In many cases, yes. Businesses can often retain their existing business phone numbers by completing a number porting process during the migration.
Before migrating, identify every number used within your organisation, including main office numbers, direct extensions, shared service numbers, and any numbers linked to call queues or auto attendants. Portability depends on the specific services and provider requirements, so it’s important to confirm eligibility before beginning the migration.
How to Reduce Downtime During a Teams Calling Migration?
Careful planning is the best way to minimise disruption during your migration.
Consider the following best practices:
- Start planning well before the withdrawal deadline.
- Audit your existing Teams environment first.
- Plan business number migration carefully.
- Configure and test the replacement solution before cutover.
- Verify critical call flows.
- Inform staff about the migration schedule.
- Ensure technical support is available during the transition.
Following these steps helps reduce risk and provides a smoother migration experience.
Common Telstra Teams Calling Migration Mistakes
Avoiding common mistakes can save time and reduce unnecessary disruptions during your migration.
Common issues include:
- Starting the migration too late
- Forgetting secondary business numbers
- Not documenting call queues or auto attendants
- Assuming existing Microsoft licensing covers the new solution
- Porting numbers without a coordinated migration plan
- Failing to test inbound and outbound calls
- Choosing a replacement based only on price
Telstra Calling for Office 365 Migration – Quick Checklist
If your business is preparing to migrate, use this checklist before making any changes.
✔ Identify all Microsoft Teams calling users
✔ Document every business phone number
✔ Review call queues and auto attendants
✔ Choose the appropriate Teams calling solution
✔ Confirm Microsoft licensing requirements
✔ Plan number porting
✔ Configure and test the replacement environment
✔ Schedule a controlled migration
✔ Verify inbound and outbound calling after completion
Businesses do not necessarily need to replace Microsoft Teams when moving away from Telstra Calling for Office 365. In most cases, Microsoft Teams remains the collaboration platform while the underlying calling connectivity is replaced with a compatible solution.
To learn more, visit our Microsoft Teams & Flex.
Frequently Asked Questions
If you’re planning a Telstra Calling for Office 365 migration, these frequently asked questions provide quick answers to common concerns about Microsoft Teams calling, business phone numbers, and the migration process.
1. How do I migrate from Telstra Calling for Office 365?
Start by reviewing your existing Teams environment, selecting the right replacement solution, confirming licensing, preparing number porting, testing the new environment, and completing the migration before the service is withdrawn.
2. Can I keep Microsoft Teams when leaving Telstra Calling for Office 365?
Yes. Microsoft Teams continues to be your collaboration platform. Only the calling connectivity needs to be replaced.
3. Can I keep my existing phone numbers?
In many cases, yes. Existing business numbers can often be ported, although eligibility depends on your current services and provider.
4. How long does a Microsoft Teams calling migration take?
Migration timelines vary depending on the size of your organisation, number of users, phone numbers, and technical requirements.
5. Will there be downtime when migrating Teams calling?
With proper planning, testing, and a controlled cutover, downtime can often be minimised.
Ready to Plan Your Migration?
Broadconnect helps Australian businesses transition away from Telstra Calling for Office 365 without replacing their Microsoft Teams environment. We’ll assess your existing users, business phone numbers, call flows, and Teams configuration before recommending the most suitable calling solution for your organisation.
Call: 1300 880 330
Email: hello@broadconnect.com.au
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