Enterprise SIP Trunking for Microsoft Teams
Carrier-grade voice connectivity over IP. Replace expensive legacy PRI lines, scale bandwidth on demand, and connect any Microsoft Teams Phone or IP-PBX to the global PSTN. Delivered by BulbNorAm.
“Session Initiated Protocol has become the industry standard for enterprise-grade Voice Over IP.”
SIP Trunk Status
BulbNorAm · CA-East & US-Central
Teams Phone
SIP Trunk
PSTN
148
Active calls
99.99%
Uptime
12ms
Latency
30-50%
vs legacy PRI
0
Hardware gateways
Carrier-grade, Microsoft-certified
Partnership
Why BulbNorAm
One Ottawa-based team. Unified delivery for Microsoft Teams Phone + enterprise SIP.
BulbNorAm Delivers
- Microsoft-certified Canadian and NA expertise
- 500+ Teams Phone deployments
- Bilingual EN/FR 24/7 support
- Ottawa-based account team
Our Carrier Network Provides
- Carrier-grade SIP infrastructure
- US, Canada, and International coverage
- Direct Routing for Microsoft Teams
- Local breakout for low-latency PSTN
You Get
- Flexible capacity (no 24/32-channel blocks)
- No hardware gateways to buy or maintain
- Local CA + US toll-free + international DIDs
- Single accountable partner for Teams + trunks
Three Ways to Connect
Direct Routing, Operator Connect, or Hosted SIP
Whether you want full carrier control, Microsoft-native provisioning, or a drop-in PBX replacement — pick the model that fits your stack.
Teams Direct Routing
Bring Your Own Carrier
Connect carrier-grade SIP trunks directly to Microsoft Teams Phone via Direct Routing. Full control over your dial plan, number porting, and PSTN breakout.
- Microsoft-certified SBC infrastructure
- Full Teams Phone feature parity
- Local breakout in CA, US, and EU
- E911 compliance for North America
- Dial plan customisation
Operator Connect
Native Teams Provisioning
Provision PSTN service to Microsoft Teams in clicks, not weeks. Operator Connect delivers carrier-managed voice with Microsoft-native admin experience.
- Click-to-activate from Teams Admin
- Carrier-managed SBCs
- Automatic number provisioning
- Microsoft-native SLA & support
- Scales globally without re-architecting
Hosted SIP
Drop-In PBX Replacement
Enterprise-grade VoIP trunks for any IP-PBX. No hardware gateways required — SIP-based connectivity over your existing data network.
- Works with any SIP-compatible PBX
- Pay-per-channel, not 24/32 blocks
- BYOD-friendly softphone support
- Local and toll-free numbers
- Full DID range management
The economics of modern voice
Cost savings, resilience, and flexibility that traditional ISDN PRI and business-line services cannot match.
Pay Only for Capacity You Need
Traditional ISDN/PRI forces you to buy 24 or 32 channels at a time. SIP trunking scales in single-channel increments — pay for what you use, when you need it.
IP-Based, Single Network
Voice and data ride the same IP network. No separate copper, no dedicated PRI circuits, no hardware gateways. Reduce both capex and opex from day one.
Scale Bandwidth on Demand
Need more channels for a seasonal spike? Provisioned through your admin portal in minutes — not the weeks it takes to add legacy PRI lines.
Local Termination, Global Reach
Long-distance calls travel over IP and break out locally at the destination — effective local-call rates for international traffic. Local DIDs in major metros.
Built-In Resilience
Geographic redundancy, automatic failover, and carrier-diverse routing. Our carrier-diverse network keeps your phones up when single-carrier paths fail.
Full PSTN Feature Set
Caller ID, CNAM, fax, T.38, e911, hunt groups, DID porting, and toll-free origination. Everything your legacy PRI did, with cloud agility.
Common deployments we deliver
Legacy PRI Replacement
Cut your telco bill 30-50% by retiring expensive copper circuits in favour of SIP. Keep your numbers via porting, keep your dial plan.
Teams Phone Direct Routing
Pair Microsoft Teams Phone with our carrier-managed trunks. Full control over dial plans, breakout, and cost.
Multi-Site Global Voice
Consolidate dozens of regional carriers into a single SIP relationship. Local breakout where you need it, central billing wherever you want it.
Hybrid Cloud Migrations
Run on-prem PBX, Teams Phone, and contact-centre platforms on the same SIP relationship. Migrate workloads at your own pace.
Powering exceptional service for leading organisations
