Microsoft Teams Phone

Enterprise telephony on infrastructure that earns the word carrier-grade.

Connect Microsoft Teams Phone to the PSTN via Direct Routing on a carrier-grade network with 99.999% up-time and a certified engineering team that's been deploying Teams Phone longer than most have been selling it.

Direct Routing or Operator Connect? Here's our honest take.

Both methods connect Microsoft Teams to the PSTN. Direct Routing gives enterprises full carrier control: routing, number management, SIP architecture. Operator Connect trades that control for provisioning simplicity. We'll explain both, and tell you which we recommend.

T+ Recommended

Microsoft Direct Routing

Connect Teams Phone System to the PSTN via a certified session border controller on the T+ network. Full carrier control: number porting, routing configuration, call policies, and SIP trunk management, with real-time call monitoring running underneath every call leg.

Direct Routing is the right choice when your organization needs maximum control over call routing, carrier relationships, and number management. It requires more configuration, and delivers more flexibility.

Best for

Enterprises with complex call routing requirements, existing number inventories, or organizations bringing their own carrier contracts (BYOC).

Industry Context

Operator Connect

Operator Connect provisions Teams Phone calling directly from the Microsoft Teams Admin Center, with no SBC and no SIP trunk management. A certified operator appears in the Teams Admin Center and assigns numbers and calling capability through Microsoft's provisioning API.

The simplicity comes with trade-offs: call routing control, number portability, and carrier visibility sit inside Microsoft's abstraction layer rather than with your team. For organizations with complex telephony requirements, that abstraction becomes a constraint, not a feature.

When it makes sense

Smaller deployments with no existing number inventory and minimal routing requirements. If you need full carrier control, Direct Routing is the right answer.

The Microsoft layer is visible. The carrier layer is what matters.

99.999%

Network Up-Time

Five nines. What carrier-grade means in practice. Every Teams Phone call on the T+ network runs on infrastructure built to this standard.

◈ Live

Real-time call monitoring

Call quality, SIP diagnostics, and carrier route health visible across every Teams Phone call. When quality degrades, operations know before the helpdesk does.

4 DCs

Geographic redundancy

Four carrier-grade data centers across North America: Vancouver, Montreal, Dallas, Ashburn. Teams Phone calls don't stop when a data center has an issue. Redundancy is structural, not a failover plan.

90+

NPS Score

Enterprise SaaS NPS averages 31. Teams Plus delivers 90+. The difference is an engineering team that engages at the infrastructure level, not a support ticket queue.

10+ yr

Deployment experience

Teams Plus has been deploying Microsoft voice infrastructure since Direct Routing launched. 400+ deployments across enterprise, mid-market, and multi-site organizations.

BYOC

Bring your carrier

Organizations with existing carrier contracts and number portfolios can run them on the T+ network without renegotiating carrier relationships. Your numbers, our infrastructure.

More from your Teams Phone investment.

Teams Plus layers additional capabilities on top of your Teams Phone deployment: texting, analytics, queue management, and call recording, all running on the same infrastructure.

◈ Add-On · Messaging

Business texting from your Teams number

Send and receive SMS and MMS from your existing Teams Phone number without leaving the Teams interface. The same number your customers already call, now also texts.

  • 1-to-1 and group texting up to 10 members
  • Broadcast SMS with opt-in and opt-out
  • Files, images, and video via MMS
  • HIPAA compliant · Outlook and CRM integration available
◈ Add-On · Analytics

User Analytics: reporting across your Teams tenant

User-defined dashboards, trend monitors, and automated reports covering call quality, user adoption, productivity, and cost visibility across every user and location in your Teams environment.

  • Call quality monitoring and SIP/SBC health
  • Answered/abandoned calls, ring-time, talk-time per user
  • Resource management: SIP trunks, devices, gateways
  • Cloud-delivered, up and running in hours
◈ Add-On · Contact Center

Real-Time Queue Analytics: live wallboards for your floor

Real-time monitoring of Call Queues, Auto Attendants, and agent performance. Know what's happening on the contact floor before your customers feel it.

  • Live agent presence status and activity monitoring
  • Call volume, missed calls, and overflow visibility
  • Threshold alerts and gamification for agent motivation
  • Role-based access: team leaders see only their teams
◈ Add-On · Compliance

Hosted Voice Recorder: 24 months of storage included

A fully managed cloud recording platform on the T+ network. No Azure infrastructure to maintain, no client secrets to rotate, no services to monitor for continuity.

  • 24 months of call recording storage at no extra cost
  • ~$300/month savings vs. customer-managed Azure recording
  • Legal Hold, retention policies, and selective recording
  • Live supervisor listen-in and supervisor assist (barge-in)

Engineering engagement from day one, not week six.

01

Architecture review with T+ engineering

Before any configuration begins, a Teams Plus engineer reviews your existing telephony architecture, call routing requirements, number inventory, and Microsoft tenant configuration. For most enterprise environments, Direct Routing is the right path. We'll walk through why, and surface any edge cases where a different approach might apply.

02

SBC configuration and SIP trunk establishment

Certified SBC configuration, SIP trunk establishment, call policy and routing configuration. T+ engineering handles the carrier-side configuration entirely: SIP architecture, route planning, and number porting coordination from your existing carrier.

03

Number porting and testing

Number porting from existing carriers with call quality monitoring through every leg of the cutover. Full call testing across inbound, outbound, transfer, and emergency calling scenarios before go-live.

04

Go-live and ongoing monitoring

Call quality, SIP health, and carrier route performance are monitored from day one of production traffic. Your team has visibility into the same real-time metrics the T+ network operations team monitors, so issues surface before they affect users.

How you deploy matters more than what you deploy.

Talk to a Teams Plus engineer about your Teams Phone deployment. No demo. No deck. Just a conversation about your architecture.