Organizations that migrate from a legacy PBX or full-featured cloud phone system to Microsoft Teams Direct Routing may lose important communications capabilities unless they add a RingCentral overlay or purchase other complementary services.
Microsoft Teams Phone is a capable business telephone system, and Microsoft continues to expand its features. However, Direct Routing primarily connects Teams Phone to a carrier through a certified Session Border Controller, or SBC. It does not automatically include all the business continuity, call handling, caller ID, queue management, recording, artificial intelligence, analytics, texting, fax, and integration capabilities available through RingCentral.
This comparison focuses primarily on Microsoft Teams Phone with Direct Routing versus Microsoft Teams with RingCentral RingEX. RingCX is discussed only when an organization has requirements that exceed the business call-queue capabilities of both Teams Phone and RingEX and requires a dedicated contact center.
Before migrating to Microsoft Teams Direct Routing without RingCentral, organizations should evaluate the following areas, listed in order of potential business impact:
Some of these capabilities are available in Teams Phone. The important differences frequently involve feature depth, ease of administration, licensing, reporting, user control, support responsibility, and whether additional third-party products are required.
The correct question is not simply:
Can Microsoft Teams make and receive external telephone calls?
The correct question is:
Can the proposed Teams Direct Routing solution preserve every communications function the organization needs to remain operational and serve its customers?
The most important potential deficiency is dependence on Microsoft Teams as the organization’s primary calling interface.
A Direct Routing telephone call may depend on:
A failure anywhere in that chain can interrupt calling.
Microsoft supports active and backup SBCs. Organizations can also deploy a Teams Survivable Branch Appliance, or SBA, to preserve certain PSTN calling functions during a Microsoft or network disruption.
However, survivability does not happen automatically. An SBA must be designed, deployed, configured, tested, monitored, and maintained. It also does not necessarily preserve every normal Teams function, such as voicemail, presence, queues, reporting, collaboration, and administrative services.
A properly designed RingCentral overlay can provide employees with another way to access business calling through the RingCentral desktop and mobile applications. If Microsoft Teams is unavailable or inaccessible, users may still be able to communicate through RingCentral.
RingCentral advertises a 99.999% availability SLA for RingEX. More importantly, the separate RingCentral application can provide an alternate communications interface instead of making Teams the organization’s only path to business calling.
For governments, schools, universities, hotels, healthcare organizations, utilities, transportation departments, and public-safety-related operations, this can be a critical continuity safeguard.
Microsoft Teams Phone provides many standard call-routing capabilities, including:
These features may be sufficient for an organization with straightforward call-handling requirements.
The limitations become more apparent when Teams must replace a mature PBX with complex routing across numerous sites, departments, schedules, and outside services.
More complicated requirements may include:
Teams routing may be divided among auto attendants, call queues, resource accounts, calling policies, caller ID policies, voice-routing policies, PSTN usages, dial plans, emergency policies, licensing, and SBC configuration.
A call flow that was centrally administered in a traditional PBX may therefore become distributed across multiple Microsoft, carrier, SBC, and network components.
RingEX provides a mature cloud PBX environment with configurable company, site, user, department, and queue call handling. It can centralize more of the routing, telephone-number administration, endpoint management, voicemail, analytics, and user applications within a single communications platform.
The accurate distinction is:
Teams Phone provides capable standard business-call routing. RingEX may provide greater flexibility and more centralized administration for complex business calling environments.
Every existing call flow should be documented and recreated before telephone numbers are ported.
Microsoft Teams Phone and RingEX both support business call queues. It would be inaccurate to imply that an organization must purchase a full contact center simply to receive queue calls or offer callers a callback.
Depending on configuration and licensing, Teams Phone call queues can provide:
Some enhanced queue management and reporting functions may require Teams Premium or other licensing.
Microsoft Teams can offer an eligible caller a callback based on:
The caller can request a callback to the publicly dialable number from which the original call was placed. The request keeps its place in the queue until an agent becomes available or the request expires.
Teams callback has several considerations:
RingEX provides ordinary business call queues, and the RingEX Call Queues Booster add-on adds enhanced capabilities without requiring a RingCX contact-center license.
Call Queues Booster provides:
RingCentral has also added a real-time dashboard in the RingCentral desktop application for organizations using Call Queues Booster or the Customer Engagement Bundle.
This means RingEX can support a substantial departmental queue operation without requiring a dedicated contact center.
RingCX should enter the discussion only when an organization needs capabilities beyond the business queues available in Teams Phone or RingEX, such as:
For reception, customer service, admissions, reservations, billing, or a help desk, RingEX with Call Queues Booster may provide the necessary queue capabilities.
For a formal, complex, omnichannel contact center, RingCX or another dedicated contact-center platform should be evaluated.
Microsoft Teams Phone supports outbound caller ID. Administrators can configure users to display:
Call-queue representatives can also be permitted to select between their personal number and an approved queue or auto-attendant number.
The deficiency is not the absence of caller ID. The concern is the flexibility, administrative effort, and carrier coordination required to make caller ID function properly across multiple departments and sites.
Organizations should determine whether employees can:
Every presented number must be authorized, properly assigned, routed through the SBC, and accepted by the Direct Routing carrier.
Calling-party name, commonly called CNAM, requires additional attention. Microsoft can send an outbound calling-party name, but the name displayed to the recipient can depend on:
Entering a company name in Microsoft Teams does not guarantee that every recipient will see the correct name.
RingEX centralizes more of the PBX, telephone-number, caller ID, and carrier environment. Depending on permissions and configuration, users can place calls using approved business caller IDs while administrators retain control over the numbers available to them.
No provider can guarantee what every terminating network displays. However, reducing the number of separate systems and providers can make caller ID easier to administer and troubleshoot.
Microsoft Teams supports call recording, but organizations must distinguish among several different recording requirements.
An authorized user manually starts recording during a call. This may be sufficient for occasional business conversations, but it does not guarantee that every required call is captured.
Microsoft supports automatic recording for eligible call queues. This capability has specific prerequisites involving queue configuration, conference mode, security groups, authorized users, storage, and administration.
Organizations should verify whether it covers every required call scenario, including:
Compliance recording automatically captures communications for designated users under organizational or regulatory policy.
Microsoft uses certified third-party solutions for policy-based compliance recording. Direct Routing by itself does not provide a complete regulated recording platform.
Depending on the selected RingEX edition and configuration, RingCentral can provide:
Organizations should verify:
Organizations with highly regulated recording requirements may still need a specialized compliance-recording platform, regardless of whether they use Microsoft Teams or RingCentral.
Call recording must be configured in accordance with applicable federal, state, local, and international consent and privacy laws.
Microsoft Teams supports transcription for eligible PSTN and Teams calls when the required policies are enabled.
With the appropriate Microsoft licensing and configuration, users may receive:
These capabilities can be valuable for employees already using Microsoft 365 and Microsoft Copilot.
The issues to evaluate are availability, consistency, licensing, and administrative control.
Organizations should ask:
RingEX includes AI-focused communications capabilities such as:
The specific availability of these features depends on the selected RingEX plan, add-ons, device, call type, and configuration.
Microsoft Copilot is particularly valuable for productivity across Microsoft 365. RingEX AI is focused more directly on business telephone conversations and unified communications.
An organization may benefit from using both, but it should not assume that purchasing Direct Routing automatically gives every Teams Phone user complete AI transcription and call intelligence.
Microsoft has significant artificial-intelligence capabilities. It would not be accurate to say that Teams lacks AI.
The correct comparison is the type of AI the organization requires.
Microsoft Teams and Microsoft Copilot can provide:
These capabilities are primarily focused on helping employees during and after communications.
Depending on the selected products and licenses, RingCentral can provide:
RingCentral AI Receptionist addresses a different requirement from Microsoft Copilot. Instead of assisting an employee during a call, it can answer inbound calls, interact with callers, respond to routine questions, collect information, and route calls.
Organizations should identify whether they need AI for:
Microsoft Copilot may be stronger for Microsoft 365 productivity, while RingCentral may offer advantages for business telephony, reception, and customer interactions.
Microsoft provides Teams usage reports, PSTN call details, call-quality information, and reporting for auto attendants and call queues.
The limitation is that the available reporting may not provide the immediately usable operational intelligence that managers expect from a mature telephone platform.
Microsoft reporting may involve:
Microsoft also documents specific reporting considerations for auto attendants, call queues, and callbacks.
Managers may need access to:
RingEX provides communications-focused call logs, analytics, quality-of-service information, scheduled reports, and queue reporting.
RingEX Call Queues Booster adds:
The organization’s required reports should be demonstrated before migration approval. A statement that a platform “includes analytics” is not enough if managers cannot reproduce the reports they currently use.
Direct Routing does not automatically turn a telephone number into a business-texting number.
SMS and MMS depend on:
Organizations should not assume that connecting a voice number to Teams through an SBC gives employees the ability to text from that number.
This can be a significant loss for organizations that use texting for:
RingEX can provide business SMS and MMS for eligible numbers and plans. Employees can communicate using a managed business identity instead of exposing personal mobile numbers.
RingCentral’s Business SMS Booster can add capabilities such as:
Messaging remains subject to number eligibility, registration, carrier rules, country restrictions, and applicable use limits.
Direct Routing transports voice calls. It does not automatically provide every user with a managed electronic fax inbox and outbound fax service.
Organizations that still use fax may otherwise need:
RingEX includes integrated business fax capabilities on applicable plans. Authorized users can send and receive faxes electronically, and RingCentral promotes eFax access within its Microsoft Teams integration.
Fax should be treated as a formal migration requirement. Every fax number, machine, user, workflow, and retention rule should be inventoried before porting begins.
Microsoft Teams integrates extremely well with Microsoft 365. A Direct Routing connection, however, does not automatically integrate telephone activity with every CRM, help desk, property-management system, or business application.
Organizations may require additional products or custom development for:
RingEX offers an extensive catalog of communications integrations and APIs. RingCentral states that RingEX connects with more than 500 applications and integrations.
Depending on the application and licensing, RingEX may provide:
Every critical integration should be tested before cutover. This is particularly important for hotels, schools, governments, healthcare organizations, sales departments, and customer-service operations.
Most organizations have more than individual office phones. They may also need to support:
Direct Routing can integrate with third-party PBXs, gateways, and analog systems, but these devices do not automatically migrate when Teams Phone licenses are assigned.
Microsoft SIP Gateway supports certain compatible SIP phones. Microsoft also offers common-area phone licensing. Analog and specialty endpoints generally require additional adapters, gateways, SBC routing, retained infrastructure, or replacement equipment.
RingEX also requires compatible devices and proper system design. However, supported desk phones, common-area devices, analog adapters, paging interfaces, and user applications can be incorporated into the overall RingCentral migration.
Every telephone number and endpoint should be inventoried, classified, and tested before porting.
A Teams Direct Routing deployment can involve multiple administrative and support organizations:
Microsoft requires Direct Routing customers or their providers to manage the certified SBC, public DNS, certificates, firewall configuration, voice routes, dial plans, carrier connections, emergency calling, and monitoring.
When a call fails, the problem could involve:
This can create divided support responsibility.
A managed RingCentral deployment can consolidate more of the cloud PBX, carrier, telephone-number, SMS, fax, recording, analytics, administration, and support environment.
The exact support responsibility will depend on the implementation partner and service agreement, but a more unified platform can reduce the number of boundaries involved in troubleshooting.
Direct Routing requires more than an ordinary Teams license. The total solution may include:
Some RingCentral integration models may allow organizations to provide RingEX calling inside Teams without purchasing a Teams Phone license for every user. Other RingCentral Direct Routing designs will still use Teams Phone licensing.
The correct financial comparison must include the total cost of reproducing all required capabilities—not simply the cost of enabling a Teams dial pad.
Teams Direct Routing can be an appropriate solution for organizations that:
The concern is not that Direct Routing cannot work. It can work extremely well when properly designed.
The risk arises when an organization assumes that connecting a carrier to Microsoft Teams will automatically reproduce every feature of its existing PBX or a full RingCentral communications platform.
Before choosing Teams Direct Routing without a RingCentral overlay, ask:
If these questions do not have documented answers, the organization is not ready to treat Direct Routing as a complete replacement for its existing telephone system.
RingCentral does not eliminate the collaboration value of Microsoft Teams. It can strengthen Teams by adding a communications platform designed specifically around business calling and customer engagement.
Depending on the selected RingCentral integration, plans, and add-ons, an organization can add:
Most of these capabilities are available through RingEX and applicable RingEX add-ons. A dedicated RingCX contact center is necessary only when the organization’s customer-engagement requirements extend beyond business call queues into advanced omnichannel routing, workforce management, quality management, outbound campaigns, or formal contact-center operations.
Microsoft Teams Direct Routing provides PSTN connectivity and useful business-calling features. It does not automatically provide every capability required to replace a mature PBX or a complete RingCentral communications environment.
Without a RingCentral overlay or equivalent complementary services, an organization may lose—or need to separately recreate—communications resilience, advanced routing, flexible caller ID, enhanced queue announcements, callback reporting, automatic recording, telephony-focused AI, long-term analytics, business SMS, electronic fax, and business-application integrations.
RingEX with Call Queues Booster can provide enhanced queue functionality—including position in queue, estimated wait time, callback requests, increased queue capacity, and live reporting—without requiring a dedicated RingCX contact center.
The safest migration begins with a feature-by-feature assessment. Every call flow, queue, caller ID, callback requirement, recording rule, transcript, report, fax number, text-enabled number, analog endpoint, paging connection, emergency location, and business integration should be documented before cutover.
High Country Workplace Technologies helps organizations compare Microsoft Teams Direct Routing, RingCentral RingEX, Zoom Phone, Mitel, and other cloud or hybrid communications platforms. Because HCWT supports both legacy PBX environments and modern UCaaS systems, we can identify the operational features that must be retained before the migration begins.
The objective should not simply be to move dial tone into Microsoft Teams.
The objective should be to modernize communications without sacrificing reliability, customer service, compliance, reporting, or business continuity.
This article was authored by Jim Whitfield