If you deployed Microsoft Teams with Calling Plans, you did the easy thing — and you're paying for it. Calling Plans are universally acknowledged to be expensive at scale. A 5,000-user enterprise pays $480K–$900K annually.
Direct Routing via SBC cuts that to ~$45K. That's not an estimate. It's an audited financial model, and we'll show you the math before you sign.
See your savings →| Microsoft Calling Plans | Direct Routing (via SBC) | |
|---|---|---|
| Per-user cost | $17–23/user/mo (on top of Teams Phone Standard $8) | $8/user/mo trunking |
| 5,000 users annual | $480K – $900K | ~$45K |
| Annual savings | — | $400K+ |
| Cost reduction | — | Up to 60% |
| Legacy analog support | ✗ | ✓ |
| Custom routing | Limited | Full control |
| E911 dynamic location | Basic | PIDF-LO engineered |
| SIP trunk control | No | Yes |
We deploy an active-active virtual SBC architecture (AudioCodes Mediant VE or Ribbon SWe) in dual regions, connect your SIP trunks, and migrate your users from Calling Plans to Direct Routing — with zero dial-tone drop.
You keep every Teams feature. You keep every phone number. You lose the bill.