Replace a legacy PBX
Migrate from on-prem PBX with zero downtime.
Example workflow
Port numbers → provision users → mirror routing → cutover overnight → keep history.
Product · Sonaira Voice
Your phone system, rebuilt for the AI era.
Sonaira Voice replaces legacy PBX with a cloud-native phone system - built on Tier-1 carrier infrastructure, programmable end-to-end, and AI-ready from day one.
Voice · live routing
Inbound
+1 (415) 555-0142
0:02
AI Auto-Attendant
Intent: Sales · EN
0:03
Skill-based queue
AE West · 2 waiting
0:04
After-hours
Transcribed → CRM
0:05
< 80ms
setup
24
live calls
99.999%
uptime
By the numbers
< 80ms
Call setup time
Carrier direct
100%
Voicemails transcribed
Auto
Unlimited
Concurrent calls
Elastic
120+ countries
Number coverage
Local DIDs
The idea
A phone system that thinks before it rings.
AI-native routing
Calls are routed by intent, language, and history - not just by IVR menus.
Cloud-native
No hardware, no PBX maintenance - provisioned in minutes, scaled instantly.
Carrier-grade
Built on Tier-1 carrier infrastructure with five-nines reliability.
How it works
From dial tone to intelligent conversation.
- Step 01Provision
Port numbers or buy new ones in seconds - local, toll-free, or international.
- Step 02Route
AI decides menu, queue, or live agent based on caller intent.
- Step 03Converse
Calls recorded, transcribed, and summarized in real time.
- Step 04Sync
Every call syncs to CRM, helpdesk, and Sonaira Insights.
Capabilities
Everything you'd expect - and a lot you wouldn't.
Smart auto-attendant
AI-powered IVR that understands natural speech.
Voicemail-to-text
Every voicemail transcribed, summarized, and routed.
Call recording
Cloud recording with searchable transcripts.
Ring groups & queues
Skill-based routing, overflow, and after-hours rules.
Global numbers
Local DIDs in 120+ countries. Toll-free included.
Programmable APIs
Trigger flows, route calls, and embed voice anywhere.
Old vs. new
Why teams switch to Sonaira Voice.
Legacy stack
With Sonaira
- Siloed tools wired with brittle ZapsOne platform - voice, messaging, AI, workflow
- Months of carrier and vendor procurementProvisioned in minutes on Tier-1 infrastructure
- AI bolted on after the factAI-native from the carrier layer up
- Reports lag the business by weeksReal-time analytics on every conversation
In practice
Teams using Sonaira Voice.
Multi-location HQ
Centralize phones across regions while keeping local numbers.
Example workflow
Local DIDs per location → unified routing → shared queues → centralized reporting.
Outbound sales
Power-dial with caller-ID matching and call disposition.
Example workflow
Lead list → power dialer → live transcript → AI summary → CRM activity.
"Sonaira Voice replaced three vendors for us - and we ship customer experiences in days instead of quarters."
3.2×
Faster to deploy
Plays nice with your stack
SalesforceHubSpotZendeskIntercomSlackMicrosoft TeamsGoogle WorkspaceTwilioStripeNotionZapierMCP
Related products
Built into these Sonaira products.
FAQ
Questions, answered.
- Sonaira Voice replaces legacy PBX with a cloud-native phone system - built on Tier-1 carrier infrastructure, programmable end-to-end, and AI-ready from day one.
Make your phone system the smartest part of your stack.
Carrier-grade voice, programmable APIs, and AI agents - in one cloud-native phone system.