A Comparison of Operator Connect and Direct Routing

Microsoft Teams is already the central hub for chat, meetings, and collaboration in many companies. As soon as employees are expected to make calls to external parties, a critical architectural question arises: Operator Connect vs. Direct Routing. Both options connect teams to the public telephone network. However, they differ significantly in terms of how much control you have over phone numbers, telephony processes, locations, and integrations.

For smaller environments, a fast, standardized connection may be a good option. In more complex communication environments with existing phone numbers, a cloud PBX, contact groups, IVR, or CRM integration, more than just one Teams phone connection is usually required. The right decision therefore depends not only on the number of employees, but also on how your company handles its phone calls.

What Operator Connect Offers Teams

Operator Connect is a solution provided by Microsoft that allows you to connect a certified telecommunications provider directly to your Teams tenant. Phone numbers and user assignments are managed through the Teams Admin Center. The provider establishes the connection to the public telephone network, while Microsoft handles the technical integration within Teams.

The main advantage is the ease of setup. Companies select an available carrier, order phone numbers, or Port existing numbers and assign them to Teams users. As a rule, there is no need to purchase or operate a dedicated session border controller (SBC). This reduces the initial technical effort.

Operator Connect is a good fit when Teams is to be the sole telephony interface and requirements remain manageable. Typical scenarios include companies with a single location, clear user structures, and little need for specialized call logic. This model can also be attractive for organizations that want to standardize their operations as much as possible.

The downside of simplicity: Operator Connect is based on the Teams feature set and the offerings of the respective carrier. Complex PBX functions, custom call routing, or the integration of existing systems cannot always be implemented as flexibly as a standalone PBX architecture allows.

Operator Connect vs. Direct Routing: The Technical Difference

With Direct Routing, Microsoft Teams is connected to a SIP trunk or a carrier via an SBC. The SBC serves as the controlled interface between Microsoft 365 and the telephone network. It ensures secure signaling, manages media streams, and can enforce rules for phone numbers, routing, and failure scenarios.

Direct Routing is therefore not a single product, but rather an architecture. Companies have significantly more freedom in choosing their trunk provider, phone numbers, PBX system, and integration logic. The SBC can be installed on-premises, operated virtually, or procured as a managed service. What matters is not that every company operates its own hardware, but that the solution is properly sized, monitored, and secured.

With Direct Routing, Teams users can be connected directly, while at the same time continuing to use traditional desk phones, DECT devices, reception desks, or existing PBX extensions. This is particularly relevant when not all employees work exclusively in Teams. Production, reception, service, warehousing, or shared workstations often have different requirements than office workstations.

With direct routing, a cloud PBX can handle the actual telephony logic: group calls, busy light panels, time control, IVR, call queues, call forwarding, or cross-location call routing. Teams continues to provide a full-featured interface for authorized users, without necessarily having to replace established processes.

Control, Features, and Integrations

The key question is: Do you simply need external calling in Teams, or do you need a company-wide communication platform? Operator Connect is designed for the first use case. Direct Routing offers significantly more flexibility for the second.

Let’s consider a company with a reception desk, several departments, and mobile employees. Calls to the main number should first be routed to an IVR and then, depending on the language, business hours, and subject matter, forwarded to Teams users, a service group, or external on-call phones. In addition, a CRM system should open the appropriate customer record when an incoming call is received. Such workflows can be precisely planned using Direct Routing and an integrated PBX.

Flexibility also plays a role in the phone number strategy. Existing Swiss phone numbers, international numbers, extension blocks, and location-based numbers must be properly ported, assigned, and routed as needed. Those who manage multiple companies, branches, or countries benefit from an architecture that centrally controls numbering plans and routing rules.

Winet natively integrates its Ayrix PBX with Microsoft Teams. This allows Teams telephony and PBX functions to be operated within a single communications architecture without the need for separate Teams add-ons or additional SBC components that require licensing. This is particularly useful when companies want to expand their use of Teams without having to reinvent existing reachability and service processes.

Comparing Costs Accurately

A cost comparison shouldn't stop at the monthly license fee. Operator Connect often seems more affordable and simpler because there is no separate SBC involved. This may be true for a clearly defined Teams environment. Nevertheless, companies should check which services are included: number porting, Call Rates, Flat Rates, emergency assistance, support, administration, and possible additional features.

With Direct Routing, depending on the model, additional costs may apply for SIP trunks, SBC operation, PBX licenses, implementation, and managed services. However, the solution can be precisely tailored to your needs. Organizations that can continue using existing phone numbers, telephony equipment, and processes may be able to avoid costly migrations. Even with a large number of users, multiple locations, or high call volumes, a suitable rate plan and trunking model can be more cost-effective than a purely standardized approach.

Predictable costs do not result from keeping as little technology visible as possible. They result from a clear separation of services, appropriate pricing plans, and an operation that detects issues early. This includes monitoring, configuration documentation, security updates, and a designated point of contact when users, locations, or requirements change.

Safety and operations are not a minor matter

Telephony is part of the IT infrastructure. When Teams, SIP trunks, and external systems are connected, identities, encryption, network quality, and access rights must all work together seamlessly. With direct routing, the SBC plays a key protective role. It limits unwanted connections, clearly separates networks, and supports a controlled connection to Microsoft Teams.

Also the Internet connection determines call quality. An unstable connection, a lack of prioritization, or incorrectly configured firewall rules are most noticeable during voice calls. Companies with multiple locations should therefore view telephony, site connectivity, firewalls, and quality standards as an integrated system.

Operator Connect reduces some of the technical responsibility on the customer's end. While this is an advantage, it does not replace proper user management, an emergency call plan, or an assessment of local requirements. Direct Routing requires more planning but, in return, offers options for redundancy, customized security policies, and tailored failure scenarios.

Which solution is right for your business?

Operator Connect is a good choice if your company uses Teams as its primary telephony platform, standard features are sufficient, and a quick rollout is a priority. This solution is particularly well-suited if you want to manage as little of your own telephony infrastructure as possible and your preferred provider is available within the Microsoft ecosystem.

Direct routing is often the better choice if you want to integrate existing phone systems, SIP trunks, or numbering plans. The same applies to complex call flows, mixed endpoints, multiple locations, international numbers, or integrations with CRM, ERP, and directory services such as LDAP. It is the more flexible option, but it requires a well-thought-out design and a partner who takes a holistic view of the network, security, and telephony.

The best Teams telephony solution isn’t the one with the shortest list of features, but the one that ensures employees can be reliably reached and evolves alongside your company. By taking stock of your current call routes, phone numbers, and special cases before making a decision, you can avoid having to make compromises later on and lay a foundation that will hold up even when you add a new location, bring on a new team, or switch systems.