PSTN Calling Inside the Teams App Your Staff Already Uses
Your team lives in Microsoft Teams — but without a voice strategy, outside calls still run through a separate phone system, a second app, or expensive Microsoft Calling Plans. Teams Phone with Direct Routing connects your carrier to Teams through a certified session border controller (SBC), so employees call, receive, and transfer from the same app they message and meet in.
At Boston VoIP, we compare Calling Plans vs Operator Connect vs Direct Routing against your call volume, compliance needs, and device mix — then design, port, and support the winner. Standardized on Microsoft 365? Teams Phone is usually the answer. Need a standalone phone platform instead? See our Cloud PBX & UCaaS service. Either way you get better-than-direct carrier pricing through our 200+ provider ecosystem.
Boston use case: our most common Teams Phone project is a 25–150 user firm already on Microsoft 365 — Seaport professional services, Cambridge biotech, and Route 128 manufacturers — paying for Calling Plans or a legacy PBX alongside Teams. We move them to Direct Routing or Operator Connect with ported DIDs, Teams auto attendants and call queues, compliant E911 per floor, and Yealink/Poly Teams devices. Read the decision framework in our Teams Direct Routing guide.
Calling Plan vs Operator Connect vs Direct Routing
The three ways to get PSTN calling in Teams — and when each wins for Boston businesses.
| Capability | Calling Plan | Operator Connect | Direct Routing | Boston VoIP Advantage |
|---|---|---|---|---|
| Best For | Under 25 users, simple needs | 25–100 users wanting carrier choice | 25+ users, call centers, compliance | We map your call profile to the cheapest fit |
| Per-Minute Cost | Highest, Microsoft list rates | Mid-range carrier rates | Lowest, negotiated SIP rates | Below-published carrier pricing via 200+ providers |
| Analog / Elevator / Fax | Not supported | Limited | Fully supported via SBC/ATA | We keep your specialty lines working — see POTS replacement |
| E911 Control | Basic | Carrier-managed | Full dynamic E911 per floor | MA-compliant dispatchable locations configured |
| Failover | Microsoft only | Carrier + Microsoft | Dual SBC, dual carrier capable | Backchannel escalation when carriers have issues |
Microsoft licensing and carrier rates change frequently. Contact us for current pricing and a side-by-side quote.
Benefits of Teams Phone for Boston Businesses
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Cut Calling Plan Spend
Direct Routing SIP rates beat Microsoft Calling Plan list prices — typically 30–50% less for firms with real call volume.
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One App for Everything
Calls, meetings, chat, and voicemail in Teams on desktop, mobile, and Teams-certified desk phones.
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Keep Your Numbers
Port Boston DIDs, toll-free, and fax lines with scheduled cutovers and zero-downtime dual-routing.
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Call Queues That Work
Auto attendants, call queues, and Teams contact-center integrations for support and sales teams.
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Your SBC, Your Choice
Hosted cloud SBC or on-premise — AudioCodes, Ribbon, or carrier-hosted — designed around your survivability needs.
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Compliant E911
Dynamic emergency calling with dispatchable locations for every floor, site, and remote worker.
Ideal For Boston Teams Already on Microsoft 365
Teams Phone designs tailored for compliance, hybrid work, and multi-site calling.
Frequently Asked Questions
Common questions about Teams Phone and Direct Routing for Boston businesses.
How much does Microsoft Teams Phone cost in Boston?
Microsoft licensing plus PSTN connectivity typically runs $8 to $25 per user per month depending on whether you choose Calling Plans, Operator Connect, or Direct Routing — plus any SBC hosting. Direct Routing usually wins on price above ~25 users. Boston VoIP compares all three against your call volume and negotiates carrier rates below published pricing.
Calling Plan vs Operator Connect vs Direct Routing — which should we choose?
Calling Plans are simplest but priciest per minute and least flexible. Operator Connect adds carrier choice with Microsoft-managed interconnection. Direct Routing gives maximum control, the lowest per-minute cost, and support for analog devices, call centers, and complex routing. Most Boston firms with 25+ users or compliance needs choose Direct Routing; smaller Teams-only offices often start with Operator Connect.
Can we keep our existing Boston phone numbers?
Yes. We port your existing Boston DIDs, toll-free numbers, and even fax lines to your Teams Phone carrier. Porting is scheduled to avoid downtime, and temporary dual-routing keeps you reachable during the cutover.
How is E911 handled for Massachusetts offices and remote workers?
We configure dynamic E911 with per-floor and per-site dispatchable locations for your Boston, Cambridge, and Route 128 offices, plus emergency policies for remote and hybrid workers. Every design is validated against current federal and Massachusetts emergency calling requirements.
On-premise SBC or hosted cloud SBC?
Hosted SBCs suit most Boston SMBs: no hardware, automatic failover, and per-session pricing. On-premise SBCs fit firms with survivability requirements, existing virtualization, or very high concurrent-call counts. We design both and manage whichever you choose.
How long does a Teams Phone rollout take?
Pilot groups go live in 1–2 weeks; full company migrations typically take 3–6 weeks including number porting, Teams devices, auto attendants, call queues, and user training. We run Teams in parallel with your current system until cutover day.
Get Your Free Teams Phone Audit
Tell us about your Microsoft 365 setup and call volume — we'll recommend Calling Plan, Operator Connect, or Direct Routing with exact pricing.