Answer every call.
Even the ones at 2am.
AI agents resolve the routine calls end to end. Your people get the ones that actually need a human — with the whole conversation already in front of them.
Trusted with live carrier traffic every day
One platform. Every conversation.
An ICASA-licensed South African operator carrying 10 million minutes and 50 million messages a month — on a softswitch we wrote ourselves to fix the things this industry kept getting wrong.
Answer every call.
A-Z termination
from $0.0017 a minute.
Interconnect with us and buy capacity at carrier rates. Least-cost routing, automatic failover, and honest quality data per destination — not one flattering average.
Stop renting your switch.
Own the platform instead.
A carrier-grade softswitch, rating engine and billing platform licensed to you — for materially less than a legacy commercial licence, deployed in days rather than months.
Be local
anywhere you sell.
London, Johannesburg, New York and Dubai numbers on one account, all ringing wherever you want. Live in minutes, and we port your existing ones across.
Reach everyone.
From R0.16 a message.
SMS lands on any phone with signal — no app, no data bundle. Campaigns, OTPs and alerts with real delivery receipts and replies routed into your system.
0
Minutes carried monthly
0
SMS delivered monthly
ICASA
Licensed operator
0
Core network uptime
Live A-Z rates
Everything in one place
Pick what you need. Add the rest later.
Every product runs on the same switch and lands on the same bill — so a call, a number and a text message all reconcile in one place instead of three vendor portals.
AI Call Centre
AI agents answer the routine calls, coach your team on the live ones, and score every single interaction. Your people handle what actually needs a human.
Explore →Cloud PBX
A full phone system with no hardware to buy. Extensions, IVR, queues, voicemail and a softphone in the browser — running the day you sign up.
Explore →Phone Numbers
Local, national, mobile and toll-free numbers in markets worldwide. Live in minutes, pointed anywhere, and we port your existing ones across for you.
Explore →Bulk SMS
Reach every customer with a phone, not just the ones with data. Campaigns, OTPs and alerts from R0.16 per message.
Explore →SIP Trunking
Already have a PBX you like? Keep it. Connect it to our network and cut your call costs without replacing a thing.
Explore →A-Z Wholesale Voice
Carrier-grade termination to every destination, with least-cost routing and automatic failover. From $0.0017/min.
Explore →White-Label Platform
Sell all of this as your own product. Your brand, your domain, your pricing, your customers — we stay invisible.
Explore →Recording & Compliance
Every call recorded, searchable and defensible. Retention rules, legal hold and consent tracking that stand up to an audit.
Explore →APIs & Integrations
Buy numbers, send messages and pull records straight from your own software. REST and SMPP, properly documented.
Explore →
AI Call Centre
Answer every call. Even the ones at 2am.
AI agents pick up the repetitive calls — balances, order status, bookings — and resolve them start to finish. Anything complicated goes to a person with the full conversation already in front of them.
- Never miss a call again — overflow and after-hours handled automatically
- Coach your agents live with prompts and next-best-action mid-conversation
- Score 100% of calls, not the 2% a QA team can listen to by hand
- Understands your customers — tuned to the accents your floor actually hears
- Dial out smarter with predictive pacing and DNC protection built in
38%
Handled by AI
92%
SLA met
Phone Numbers
Be local anywhere you sell.
A London number, a Johannesburg number and a New York number on one account — all ringing wherever you want them to. Customers dial a local number; you answer from anywhere.
- Live in minutes, not after a week of paperwork
- Keep your existing numbers — we handle the porting end to end
- Voice and SMS on the same number where the country allows it
- Point it anywhere — a person, a queue, a menu, a mobile — and change it any time
- Buy in bulk at wholesale rates if you're reselling to your own customers
Minutes
To go live
Bulk SMS
Reach everyone. Not just the ones with data.
SMS lands on any phone with signal — no app, no data bundle, no account. It's still the highest open rate of any channel, and in most of the world it's the only one that reaches everybody.
- From R0.16 per SMS to South Africa, dropping with volume
- OTPs that arrive instantly — priority routing, never stuck behind a campaign
- See what landed with real delivery receipts, per network
- Customers can reply and their answers route straight into your system
- Honest character counting — we bill what the standard says, not what rounds up
R0.16
Per SMS, from
Global reach
Rooted in South Africa. Routing to everywhere else.
Our core network sits in Johannesburg. From there we terminate voice and messaging A-Z — direct where we hold interconnects, tiered partners beyond that, and honest quality reporting either way.
Core network & NOC
Termination regions
A-Z partner routing beyond
Illustrative — see live coverage after sign-in
Why Zephyr
We wrote the software. That changes everything.
Most providers in this market resell a switch someone else wrote. Ours was built from scratch by an engineer who had lived the problems — so when you need something unusual, the answer is a schedule, not a roadmap ticket.
Built for you
Custom is normal here
Odd billing rule? Unusual routing? A report your finance team needs? That's an afternoon's work, not a feature request.
One bill
Everything reconciles
Calls, numbers and messages on a single invoice, in your currency, with the cost and the charge on every record.
Licensed
ICASA operator
We hold our own licence and run our own core network — we're not reselling someone else's regulatory cover.
Real support
Engineers answer
When something breaks at 2am you reach someone who can read a SIP trace and fix it — not someone reading a script.
The Zephyr Softswitch
Run it yourself. Or let us run it for you.
We didn't licence a softswitch — we wrote one. Which means we can also licence it to you. Three ways to deploy, depending on how much of it you want to own.
Fastest to launch
Hosted by Zephyr
Use our platform under your own brand. Nothing to install, nothing to maintain — you sell, we run the infrastructure.
- Live in days, not months
- Your brand, logo and domain
- We handle updates and uptime
- Multi-tier reseller markup built in
- Pay per tenant or per seat
Balanced control
Co-hosted
Your own dedicated instance, isolated from everyone else, but still operated and monitored by our engineers.
- Dedicated instance and database
- Your choice of data region
- Custom modules built to spec
- We patch, monitor and back up
- Direct engineering escalation
Full control
Self-managed licence
The platform deployed on your own infrastructure, under commercial licence. You operate it; we support you.
- Runs in your data centre or cloud
- Your data never leaves your estate
- Annual licence, no revenue share
- Training and handover included
- Source stays Zephyr property
Built to be resold
Multi-tenant from the first line of code
This isn't a single-customer system with tenants bolted on afterwards. Every layer — routing, rating, billing, reporting — was written to serve many customers at once, each isolated from the others.
- Layer your own margin — wholesale to reseller to sub-reseller to retail, each tier visible
- Per-tenant limits on channels, throughput and spend, so one customer can't sink another
- Currency per rate row — buy in USD, sell in ZAR, reconcile without a spreadsheet
- Your customers never see us — no Zephyr branding anywhere in their portal
Softswitch & routing engineOperational
Rating & billingOperational
DID inventory & portingOperational
SMS gateway (SMPP)Operational
Contact centre & AIOperational
Reseller & tenant portalsOperational
REST API & webhooksOperational
South African by design
Your data stays here. POPIA by default, not as an add-on.
Most platforms selling into South Africa route your calls and store your recordings in Amsterdam, Frankfurt or Virginia. Ours run on infrastructure we operate here, under our own ICASA licence, subject to South African law — while still terminating A-Z worldwide.
- ICASA-licensed operator — not reselling someone else's licence
- Call recordings stay in-country, with retention, legal hold and access auditing
- POPIA built into the platform — consent capture and subject access requests included
- Local support hours, local invoicing, local currency, local accountability
ICASA
Licensed operator
Industries
Built for businesses that live on the phone
Different sectors, same pattern — high call volume, compliance obligations, and customers who expect an answer now.
Financial services
Banks, insurers & lenders
Recorded, consent-tracked calls with retention policy and legal hold. OTPs that arrive in seconds, on priority routes.
Retail & e-commerce
Order & delivery updates
Automated SMS at every step, and an AI agent fielding "where's my parcel" so your team never has to.
BPO & outsourcing
Contact centres
Multi-tenant by design. Run each client separately, bill them separately, brand the whole thing as yours.
Carriers & wholesalers
Voice & SMS trading
A-Z termination, DID inventory and SMPP routes with real per-destination quality data, plus a switch you can license.
Healthcare
Clinics & medical groups
Appointment reminders that cut no-shows, recorded consultations with POPIA-compliant retention, and after-hours triage.
Logistics & utilities
Field & fleet operations
Proactive status messaging that keeps customers off the phone, and numbers that follow drivers wherever they are.
Getting started
Live in days, not quarters
No six-week discovery phase before anything works. Open an account and you can be testing real traffic the same afternoon.
Open an account
Free to create. You immediately see live rates for your destinations and what numbers are available.
Test a route
We run interconnect testing with you and prove quality on your actual destinations before you commit anything.
Port and migrate
Numbers moved across, trunks configured, agents onboarded. We schedule the cutover outside your business hours.
Scale up
Add seats, numbers, destinations or whole resellers as you grow. No migration, no re-buying what you already have.
Pricing
Straightforward, and you see it before you commit
No "contact us for pricing" on everything. Create an account and look at live rates for your own destinations.
Bulk SMS
R0.16 /SMS
To South African networks. Drops with volume.
- Delivery receipts included
- Two-way replies included
- REST API and SMPP
- Volume tiers to R0.10 and below
Most popular
A-Z Voice
$0.0017 /min
From. Varies by destination and route quality.
- 123,886 live rate routes
- Least-cost routing built in
- Automatic carrier failover
- Per-destination quality reporting
Cloud PBX & Call Centre
Per seat
Scaled to your team size and features.
- Unlimited extensions on the plan
- IVR, queues and voicemail included
- Browser softphone, no hardware
- AI features available per seat
Support
Talk to a person who can actually fix it
No tier-one triage, no ticket that sits overnight. Call the NOC and you reach an engineer with access to the switch your traffic is running through.
- 24/7 NOC monitoring watching quality before you notice a problem
- We test with you before you send a single live call
- Migration handled — numbers ported, trunks configured, nothing dropped
24/7
NOC monitored
Questions
The things people ask first
What does Zephyr actually do?
We give businesses everything they need to talk to customers: an AI-powered call centre, a Cloud PBX phone system, phone numbers in markets worldwide, and bulk SMS. Carriers and resellers also buy wholesale voice termination and number inventory from us, and partners license the whole platform under their own brand.
How much does it cost?
Bulk SMS to South Africa starts at R0.16 per message with volume tiers below that. A-Z voice termination starts from $0.0017 per minute depending on destination. Cloud PBX and contact centre are priced per seat. Create an account and you can see live rates for your own destinations before committing to anything.
Do you build custom features?
Yes, and it's the main reason people move to us. We wrote the softswitch, rating engine and billing platform ourselves rather than licensing them, so custom routing, bespoke rating rules, tailored reports and specific integrations are engineering work we scope and deliver — not a feature request into someone else's queue.
Where does Zephyr operate?
Worldwide. We terminate voice and SMS A-Z and hold number inventory across Africa, Europe, the Americas, Asia-Pacific and the Middle East. Our head office and core network are in South Africa, which is where we're deepest, but customers and traffic aren't limited to any one region.
Can I keep my existing phone numbers?
Yes. We port them across and handle the losing-carrier paperwork, the regulatory forms and the cutover scheduling. Your numbers stay yours — and if you ever leave, we'll port them out just as willingly.
I'm a carrier or reseller — what do I get?
A full A-Z rate deck priced to your volume and destination mix, least-cost routing with automatic carrier failover, CDR export carrying cost, charge and both rates on every record, and per-destination ASR, ACD, PDD and MOS. We run interconnect testing with you before you send a single live call.
Who built Zephyr, and why?
Zephyr was written by an engineer who spent years working inside South African telecoms — running switches, managing routes and reconciling rate decks — and kept hitting the same limitations across every kind of operator. Carriers renting switches they couldn't extend. Wholesalers losing margin in currency gaps. Resellers sold "white-label" that still carried someone else's branding. Call centres paying per seat for imported software that couldn't handle local accents. Rather than work around those problems again, the platform was built to remove them. Every design decision in it traces back to a specific frustration.
How does the Zephyr Softswitch compare to PortaOne or similar?
Commercial softswitches like PortaOne, Sansay and Telinta are licensed products — you pay ongoing fees, capacity is usually tied to what you've purchased, and new capability arrives on the vendor's roadmap rather than yours. Zephyr was written in-house precisely to get out of that model. It deploys in days rather than months, scales channels without a per-port renegotiation, runs on your own infrastructure if you want it to, handles voice and SMS on one rating engine, and any module you need is engineering work we scope and deliver. Terms vary by vendor and contract, so compare against your actual agreement — but for most operators the total cost is materially lower.
Can I license the softswitch and run it myself?
Yes — three ways. Hosted by us under your brand, which is fastest to launch. Co-hosted, where you get a dedicated isolated instance that we still operate and monitor. Or a self-managed licence where the platform runs on your own infrastructure and your data never leaves your estate. Source code remains Zephyr property in all three.
How long does it take to get going?
An account and a number can be live the same day. A full contact centre migration with porting typically runs two to four weeks, most of which is waiting on the losing carrier rather than on us. We'll give you a realistic date, not an optimistic one.
Start free. Pay when you send traffic.
Create an account, look at live rates for your destinations, test a route and check number availability. Nothing to commit to until it works for you.