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Avoid the 200 Agent Limit: Teams Phone vs RingCentral for Microsoft 365

Compare Teams Phone and RingCentral for Microsoft 365 IT teams. See how licensing, PSTN paths, and the 200 agent queue limit affect rollout risk and costs.

IT manager testing two business phone systems

If your organization already runs Microsoft 365 at scale and needs deep Teams integration, Teams Phone typically wins. If you want an out-of-the-box cloud PBX with minimal licensing complexity, a RingCentral-first approach usually fits better. The deciding factor is your existing Microsoft investment and your appetite for managing PSTN connectivity and Direct Routing yourself.

TL;DR:

  • Teams Phone is more cost-effective for organizations already using Microsoft 365 licenses and wanting calling within the same platform, but licensing can be complex and requires careful planning.
  • RingCentral offers immediate telephony deployment with built-in PSTN, SMS, and fax, reducing configuration effort, especially for organizations needing quick setup.
  • Call quality and reliability depend heavily on network paths, with RingCentral claiming 99.999% uptime, while Teams Phone’s durability relies on Microsoft’s cloud backbone and added SBCs for Direct Routing.
  • Managing call queues and auto attendants is easier with Teams Phone if the organization has delegated admin rights, but RingCentral’s admin portal simplifies reporting and centralized control.
  • Deployments involving Direct Routing often face delays due to SBC configuration and certificate management, requiring weeks of planning, unlike native solutions that move faster with existing licenses.
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Table of Contents

Teams Phone vs RingCentral at a glance

Each platform solves the corporate phone system problem from a different starting point, and that origin shapes everything from licensing to admin workload.

  • Teams Phone leans on your existing Microsoft 365 tenant, so collaboration and calling share one interface, but it adds licensing layers (Teams Phone Standard, Calling Plans, or Direct Routing) that require careful planning.
  • RingCentral ships as a dedicated telephony platform with built-in PSTN handling, SMS, fax, and advanced call routing, which reduces the configuration burden for IT teams without deep voice expertise.
  • Teams Phone tends to be more cost-effective when you already hold qualifying Microsoft 365 licenses and want calling inside the same app your staff uses for chat and meetings.
  • RingCentral tends to suit organizations that want telephony to work immediately, independent of how complex their Teams rollout is.
  • Pilot Teams Phone first if your workforce already lives in Teams; pilot RingCentral’s embedded app if you want calling live within days, not weeks.

Which features actually differ day to day

The feature lists for both platforms look similar on paper, but the operational experience diverges once you factor in licensing and agent limits.

Teams Phone now delivers call queues and auto attendants through the Queues app, which provides real-time metrics such as waiting calls and average wait time, along with shared call history and agent controls. That functionality requires Teams Phone and Teams Premium licenses, and it caps out at 200 agents per call queue with a recommendation of no more than 100 call queues assigned per user. RingCentral, by contrast, bundles SMS, fax, and a fuller native PBX feature set without requiring a second licensing tier to unlock queue reporting.

  • Teams Phone’s Queues app lets authorized non-admin users manage queues and auto attendants directly, cutting down on help desk tickets for routine changes.
  • RingCentral’s device and mobile app experience is built for telephony first, which shows in call handling polish but not in collaboration depth.
  • Advanced contact-center functionality (skills-based routing, workforce management) sits outside both platforms’ native tiers and typically requires an add-on.

Pro Tip: Map your required agent count against the Queues app’s 200-agent ceiling before you commit to Teams Phone for a contact-center use case.

How licensing works and where budgets go wrong

Licensing is where most Teams Phone vs RingCentral comparisons get expensive if nobody reads the fine print first.

Teams Phone requires a Teams Phone Standard license as a baseline, and PSTN connectivity can come from Microsoft Calling Plans, Operator Connect, or Direct Routing through a third-party carrier. Critically, Direct Routing does not remove the need for a Teams Phone license: it still governs dial-pad and call-control features even when another provider handles the PSTN leg. RingCentral’s packaging typically bundles PSTN connectivity into its own plans, but when it runs inside Teams, Microsoft licensing requirements still depend on which integration path you choose.

  • Confirm whether your region has Microsoft Calling Plan availability before assuming it is an option.
  • Budget for Teams Phone Standard licenses even if RingCentral or another carrier handles your PSTN traffic through Direct Routing.
  • Treat “no Teams Phone license needed” claims with skepticism until you confirm which integration model is being described.

Deployment paths: native Teams Phone, embedded app, or Direct Routing

Three integration models cover almost every real-world Teams Phone vs RingCentral deployment, and each demands a different level of IT involvement.

  1. Native Teams Phone: requires resource accounts, phone number assignment, and a PSTN decision (Calling Plans, Operator Connect, or a carrier via Direct Routing) before users can dial.
  2. RingCentral embedded app: runs inside Teams as an app, and according to Microsoft’s own community guidance, this path can avoid the need for Teams Phone licenses entirely, since RingCentral handles calling outside Microsoft’s native dial-pad.
  3. Direct Routing with RingCentral as PSTN carrier: requires configuring Session Border Controllers, Azure admin permissions, and the Teams Administrator role, and spare Microsoft licenses are sometimes used temporarily during setup.

Native deployments tend to move fastest when licensing is already clean. Direct Routing projects commonly stall on certificate management and SBC configuration, so plan weeks, not days, for that path.

Admin tooling, monitoring, and supervisor controls

Day-to-day administration separates these platforms almost as much as licensing does.

The Teams admin center combined with the Queues app gives authorized users, not just global admins, delegated control over call queues and auto attendants, which reduces bottlenecks on IT. The Queues app enforces a recommended maximum number of agents per call queue, a limit that matters once your contact volume grows past a small team. RingCentral’s admin portal covers user enablement, call logs, and analytics in a single pane, generally with less dependency on Microsoft-specific permission structures. Both platforms require you to plan where call-recording and compliance controls live before go-live, since retrofitting them after rollout creates audit gaps.

  • Teams Phone admin rights can be delegated per queue, which suits distributed IT teams.
  • RingCentral’s portal centralizes reporting without requiring Teams-specific role assignments.

What drives call quality and reliability

Call quality depends less on the platform brand and more on the network path a call takes to reach the PSTN.

RingCentral’s own positioning claims 99.999% reliability across multiple years and highlights a browser-based web app as a fallback when Teams itself is unreachable. Teams Phone deployments depend on Microsoft’s cloud backbone for native calling, but Direct Routing adds carrier SBCs and SIP trunking as extra points of failure that your IT team, not Microsoft, must monitor and maintain.

Comparison of business phone call paths

When native calling is enough, and when you need a CCaaS

Teams Phone plus the Queues app covers straightforward call-queue workflows, but it was never built as a full contact-center platform. Once you need skills-based routing, workforce management, or supervisor dashboards beyond real-time wait metrics, Microsoft’s own documentation on call queue configuration points toward third-party CCaaS integration rather than native expansion. Layering a CCaaS on top of Teams adds licensing and integration cost; buying a vendor’s native contact-center tier may be cheaper at smaller scale but less flexible if you later want to unify calling and collaboration in one app.

A decision checklist before you commit

Running a short, structured pilot avoids the most expensive mistake in this decision: picking a platform before confirming licensing reality.

  1. Inventory existing Microsoft 365 and Teams Phone licenses across your user base.
  2. Confirm PSTN requirements and regional Calling Plan availability.
  3. Document peak call concurrency and typical queue sizes.
  4. Identify any contact-center requirements that exceed Queues app limits.
  5. Assess IT capacity for managing SBCs if Direct Routing is in scope.
  6. Involve network, security, compliance, and procurement stakeholders before signing anything.

Weight licensing and PSTN complexity heaviest if your IT team is small. Run the pilot for a period of several weeks to a few months with a representative user group before expanding.

Pro Tip: Score each checklist item 1 to 5 for risk, then prioritize fixing the highest-scoring items before your pilot, not after.

Reducing deployment risk in regulated environments

Telephony rollouts introduce real security surface: SBCs need hardening, SIP trunks need monitoring, and misconfigured Direct Routing can expose call paths to interception. Our cybersecurity-first approach to managed IT means we treat these as security tasks, not just connectivity tasks, which shortens detection and response time for regulated clients in healthcare and finance. See our Microsoft 365 optimization and VoIP phone systems services for the configuration work this requires.

Secure telephony path through SBC and SIP trunk

Our take on picking between Teams Phone and RingCentral

Neither platform is universally better: Teams Phone rewards organizations already committed to Microsoft 365, while RingCentral rewards organizations that want calling to work without touching Teams licensing at all. Run a narrow pilot, measure call quality and admin overhead directly, and let that data, not vendor marketing, decide.

— 247techify Team

How we support a low-risk Teams Phone or RingCentral rollout

Choosing between Teams Phone and RingCentral is only half the project. The harder half is configuring licensing correctly, hardening SBCs, and keeping calls running once staff depend on them daily. We handle that work directly for businesses, with 24/7 support and a rapid response time when something breaks.

247techify

  • We optimize Microsoft 365 and Teams Phone licensing to avoid common licensing pitfalls.
  • We configure and secure Direct Routing, SBCs, and SIP trunking for telephony providers.
  • We provide ongoing Microsoft 365 management so queue and auto-attendant changes are handled efficiently.
  • For broader network and telephony planning, partners like Vadacom offer additional carrier and SBC background worth reviewing alongside our services.

If you want a managed deployment instead of running this project internally, check our pricing and plan options or explore managed IT services built around 24/7 support and compliance for regulated industries.

FAQ

What are the downsides of using RingCentral?

RingCentral’s PSTN handling and embedded Teams app simplify telephony, but organizations still need to confirm whether their specific integration path requires Microsoft Teams Phone licensing alongside RingCentral’s own plan. Direct Routing setups also add SBC and Azure admin configuration work that a purely native RingCentral deployment would avoid.

Is Teams Phone any good?

Teams Phone works well for organizations already using Microsoft 365 heavily, since calling, chat, and meetings live in one app and the Queues app adds real-time queue metrics. It requires more licensing planning than a dedicated cloud PBX, particularly around Calling Plans, Operator Connect, and Direct Routing.

Can I make a regular phone call from Teams?

Yes, with a Teams Phone Standard license and a PSTN connectivity option such as Microsoft Calling Plans, Operator Connect, or Direct Routing, Teams supports native dial-pad calling to regular phone numbers. Without that license and PSTN setup, Teams calling stays limited to Teams-to-Teams calls.

Is MS Teams being discontinued?

No, Microsoft Teams, including Teams Phone, remains an active, actively developed product within Microsoft 365, with ongoing licensing and feature updates such as the Queues app. There is no indication from Microsoft’s own documentation that Teams or Teams Phone is being discontinued.

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