Microsoft Teams Telephony: 3 Pitfalls Enterprises Hit When Transitioning — And How to Avoid Them

BAZ Group made the transition to Microsoft Teams Telephony when we moved to a permanent virtual office. Here’s what surprised us — and what enterprise IT teams need to know before they go live.

Why BAZ Group Moved to Teams Telephony — and What We Learned

When BAZ Group transitioned to a permanent virtual office environment, the move to cloud-based IT infrastructure was a natural next step. We replaced our on-site phone system with Microsoft Teams Telephony as part of that broader transition.

The decision was straightforward. The transition was not. We encountered several operational surprises — differences in how features work, unfamiliar setup requirements, and capabilities we were accustomed to that either didn’t exist in Teams or appeared in significantly different forms. We worked through each of them and came out the other side with a platform that serves us well. But we also came away with a clear view of what enterprise IT teams should know before they go live, not after.

This post shares the three most significant pitfalls from that experience. Some of these will be addressed as Microsoft continues to mature the platform. In the meantime, they’re worth planning for explicitly.

Pitfall 1: Calls and Conferences Are Fundamentally Different in Teams

This is the most operationally disruptive surprise in a Teams Telephony deployment, and it’s the one that generates the most end-user frustration because it violates how people expect phones to work.

In Microsoft Teams, a “Call” and a “Conference” are treated as distinct session types with different feature sets. When a user makes or receives a call through the Calls tab, they have access to the full range of standard telephony features: Hold, Transfer, Consult then Transfer, and Call Park. These are the features a receptionist, a customer-facing team member, or anyone who manages a high volume of inbound calls depends on every day.

Here’s where it breaks: the moment a user adds a second party to an existing call, Teams reclassifies the session as a Conference. Once that reclassification happens, the telephony features — Hold, Transfer, Park — become unavailable for the duration of the call.

The fix isn’t technical — it’s workflow. Teams is designed around a different model of communication than traditional telephony, and the way to address this pitfall is to design call handling workflows specifically for Teams rather than assuming they’ll map directly from the old system.

Before go-live, map your highest-volume call handling use cases explicitly: who transfers calls, how hold queues work, which roles use Park Call, and how escalation workflows function. Validate each one against Teams’ actual behavior and redesign the ones that break. The Call/Conference distinction is documented but rarely caught in pre-deployment planning because it isn’t intuitive.

Pitfall 2: Microsoft Pushes Regular Platform Updates That Change How Teams Looks and Feels

Microsoft Teams is a cloud-hosted, continuously updated platform. This is one of its core advantages — enterprises always have the most current feature set without managing on-premises software versions. It is also one of its most underappreciated operational challenges.

Teams receives regular updates that change the interface, rename features, move functionality to different locations in the UI, and occasionally alter the behavior of features that existing workflows depend on. For enterprises, this creates a training maintenance problem that doesn’t have a clean end state: your training materials, quick reference guides, and onboarding documentation are never permanently current.

Practically, this means designating someone — an IT team member or a trained super-user in each department — to monitor Teams release notes, test updates in a staging environment before they roll out broadly, and maintain a current version of training materials. Microsoft publishes a monthly “What’s New in Teams” summary that makes this manageable if someone owns the process. It becomes a significant source of helpdesk tickets if no one does.

Pitfall 3: Training Is More Involved Than Most Deployments Plan For

Microsoft Teams is a powerful communications platform. It is also a platform that works very differently from a traditional phone system, a legacy UCaaS solution, or most enterprise communications tools that preceded it. The learning curve is real, and underestimating it is one of the most common reasons Teams Telephony deployments generate disproportionate helpdesk volume in the months after go-live.

The challenge isn’t that Teams is hard to use. It’s that it requires users to develop new mental models for communication workflows they’ve been executing the same way for years. Chat, calls, meetings, channels, and notifications all have distinct behaviors and interaction patterns. The Calls tab, the Meet Now function, and the Teams Meetings experience each work differently. Users who were trained on “how to make a call” in Teams still encounter confusion when they encounter the Call/Conference behavior described in Pitfall 1, or when a platform update moves a feature they rely on.

What Works: Structured Training with Role-Based Quick Reference Materials

The most effective training approach for a Teams Telephony deployment combines structured onboarding sessions with concise, role-specific quick reference guides that users can return to when they encounter something unfamiliar. A wall-to-wall training session covering every Teams feature produces retention rates that don’t justify the time investment. Role-based materials — a one-page guide for receptionists covering the Calls tab and transfer workflows, a different guide for executives covering meeting and voicemail management — give users exactly what they need for their specific workflows without overwhelming them with features they’ll rarely touch.

Microsoft provides a strong library of official training resources that can serve as the foundation. The five most essential reference points for a new Teams Telephony deployment cover:

• Chat — how messaging works, threading, and when to use chat vs. a call
• Notifications — how to configure alerts so Teams doesn’t become a distraction
• Teams and Channels — the organizational structure and how it differs from email folders or shared drives
• Calls — how to make, receive, transfer, and manage calls including the Call/Conference distinction
• Meetings — scheduling, the Meet Now function, and how Teams meetings differ from Calls

The Bigger Picture: Teams Is One Tool in a Complex Communications Environment

The most important lesson from BAZ Group’s own Teams Telephony transition is to approach it as a platform adoption decision, not just a phone system replacement. Teams is one tool in a multi-tool communications environment — alongside email, mobile, collaboration platforms, and potentially other UCaaS components — and the way it fits into that environment shapes which features matter, which workflows need to change, and how training should be structured.

Before committing to a Teams Telephony deployment, map your actual use cases. Who makes high-volume inbound calls? Who needs advanced transfer and hold capabilities? Who relies on call recording, voicemail transcription, or call queues? Validate that Teams’ current feature set satisfies those use cases — and where it doesn’t, understand whether that gap is on Microsoft’s roadmap or whether it requires a complementary solution.

Enterprises that approach the transition this way — use-case first, feature validation second, training design third — have significantly smoother deployments than those that lead with the technology and work backwards to the workflows. BAZ Group’s Technology Deployment Services team has managed UCaaS migrations for enterprise clients across a range of platforms and scales. If you’re evaluating a Teams Telephony transition and want an independent perspective on your specific environment, a complimentary strategy session is the right starting point.

Transitioning Your Telecom to the Cloud? Before you go live on Teams Telephony or any UCaaS platform, a telecom audit establishes the clean service inventory and optimized contracts that make a cloud migration cost-effective rather than cost-additive. Start with a complimentary strategy session.

Frequently Asked Questions

What is Microsoft Teams Telephony?

Microsoft Teams Telephony (also referred to as Teams Phone or Teams Calling) is Microsoft’s cloud-based enterprise telephony solution that integrates voice calling directly into the Teams platform. It replaces traditional on-premises PBX systems and allows users to make and receive phone calls through Teams using their existing business phone numbers. It can be deployed via Microsoft Calling Plans (PSTN connectivity through Microsoft), Operator Connect (through a certified carrier partner), or Direct Routing (connecting an existing SBC to Teams).

What is the difference between a Teams Call and a Teams Conference?

In Microsoft Teams, a “Call” is a standard two-party telephony session initiated through the Calls tab, with access to Hold, Transfer, Consult then Transfer, and Call Park. A “Conference” is a multi-party session that Teams creates automatically when a third party is added to an existing call. Once a session becomes a Conference, standard telephony features like Hold and Transfer are no longer available. This behavior is one of the most common sources of end-user confusion during Teams Telephony deployments.

How long does it take to train staff on Microsoft Teams Telephony?

A structured pre-deployment training session covering the five essential areas (Chat, Notifications, Teams and Channels, Calls, and Meetings) typically takes 60–90 minutes for most staff roles. Role-specific quick reference guides for high-volume call handlers (receptionists, support teams, call center staff) add another 30–45 minutes of preparation time. The more important variable is the 30-day post-go-live period: regardless of how thorough pre-launch training is, real usage surfaces questions and edge cases that pre-launch training doesn’t cover. Planning a 30-day check-in session into the deployment timeline consistently reduces ongoing helpdesk volume.

Should enterprises use Microsoft Calling Plans or Direct Routing for Teams Telephony?

The right choice depends on your existing carrier relationships, your current contract terms, and your IT team’s technical capabilities. Microsoft Calling Plans are simpler to deploy and manage but less flexible on pricing and number porting. Direct Routing gives you full control over carrier selection and can be significantly more cost-effective at scale, but requires a Session Border Controller (SBC) and more technical implementation work. Operator Connect is the middle path: carrier-managed PSTN connectivity that’s simpler than Direct Routing but more flexible than Microsoft Calling Plans. An independent telecom advisor can evaluate which option is right for your specific environment and existing contracts.

How does BAZ Group help with Microsoft Teams Telephony deployments?

BAZ Group’s Technology Deployment Services team provides independent project management and advisory support for UCaaS migrations, including Microsoft Teams Telephony. We help enterprises evaluate their current environment and calling requirements, select the right Teams deployment model (Calling Plans, Operator Connect, or Direct Routing), manage the carrier and vendor coordination, design end-user training programs, and ensure legacy services are properly decommissioned after cutover. As an independent firm with no carrier or vendor ties, our recommendations are driven entirely by what works best for your environment.