Cloud Contact Centre Platform
Multi-tenant ACD, IVR, and predictive dialler built on FreeSWITCH with full CDR pipelines, real-time dashboards, and browser-based agent desktops. Inbound and outbound, fully managed.
FreeSWITCHACDIVRPredictive Dialler
Carrier-grade voice infrastructure for East Africa
Zerxis delivers production-grade cloud contact centre and SIP/VoIP infrastructure to financial institutions, telcos, and enterprises across East Africa. Built on open standards, colocated at carrier-neutral data centres, and tuned for Safaricom, Airtel Kenya, and East African network paths.
4Countries
99.9%Uptime SLA
24/7Support
2Data Centres
Trusted by organisations across East and Southern Africa
Full-stack voice infrastructure for cloud contact centre Kenya and East Africa
From SIP trunking and VoIP carrier services to AI voice integration, we own and operate every layer of the stack. Enterprise clients get a single accountable partner for their entire voice infrastructure.
SIP Trunking and VoIP Carrier
Kamailio-based SIP routing with multi-carrier redundancy, TLS/SRTP encryption, and RTPengine media relay optimised for East African network paths including Safaricom and Airtel Kenya.
KamailioRTPengineSIP TrunksTLS/SRTP
WebRTC Browser Voice
Softphone deployments for distributed agent teams, no hardware required. Safaricom-optimised media paths and WireGuard VPN architecture for field agent and helpdesk deployments.
WebRTCNo HardwareField Agents
Multi-tenant Isolation
Isolated SIP tenant environments with per-client DID management, independent routing domains, and provisioning outbox patterns. Compliant with financial services data segregation requirements.
Tenant IsolationDID ManagementFSI Compliant
Messaging Solutions
A2P SMS, WhatsApp Business API, and omnichannel messaging integration. Build seamless conversations across your customers' preferred channels from a single platform.
A2P SMSWhatsApp APIOmnichannel
AI Voice Integration
Post-call transcription, real-time agent assist, fraud scoring overlays, and voicebot IVR, deployed natively within your existing contact centre stack. No rip-and-replace required.
TranscriptionAgent AssistVoicebot IVR
Built for African networks. Not retrofitted for them.
Global contact centre platforms are engineered for US and European network conditions and bolted onto African infrastructure as an afterthought. Zerxis builds and tunes specifically for Safaricom, Airtel Kenya, MTN Uganda, and the IPX routing realities of East Africa. That means lower latency, fewer dropped calls, and infrastructure that performs under the network conditions your agents and customers actually experience every day.
Safaricom SIP: optimisedEast African IPX routing: nativeCBK compliance: by design
Inbound and outbound, fully managed
For clients who need a fully operated contact centre and not just infrastructure, our team provides 24/7 managed call centre services across voice, email, and live chat.
Inbound Services
- Customer service and query resolution
- Technical and helpdesk support
- Reservations and bookings
- Appointment management
- Order processing
- Multilingual contact centre support
- Email support
- 24/7 answering service
- Live chat support
Outbound Services
- Appointment setting and confirmation
- Telemarketing campaigns
- Telesales and cross-sell
- B2B sales outreach
- Lead generation
- Phone surveys and market research
- Collections dialler campaigns
- Customer re-engagement
Production-grade. Colocated. Proven.
We operate our own hardware at Nairobi's carrier-neutral data centres, not resold cloud. This means predictable latency, full control, and genuine carrier interconnect into East African networks.
Stack Status · Live
| LAYER | VALUE | STATUS |
|---|---|---|
| SIP Proxy | Kamailio 5.x | NOMINAL |
| Media Relay | RTPengine | NOMINAL |
| Switch | FreeSWITCH | NOMINAL |
| WebRTC Gateway | Active | NOMINAL |
| Colo | Nairobi, Kenya | LIVE |
| Carrier Links | Multi-redundant | ACTIVE |
Production infrastructure colocated in Nairobi, Kenya, providing carrier interconnect access to East African networks and low-latency paths for Safaricom and Airtel Kenya traffic.
Open-source carrier stack (Kamailio, FreeSWITCH, RTPengine) gives clients full transparency, no vendor lock-in, and the flexibility to integrate with any upstream telco or downstream CRM.
TLS/SRTP encryption end-to-end with Diameter/SS7 interconnect knowledge, a requirement for financial services clients operating under CBK and regional regulatory frameworks.
East African network expertise: deep familiarity with Safaricom, Airtel Kenya, and East African IPX routing means we tune for the actual paths your calls traverse, not theoretical benchmarks.
How it works
From first call to go-live, we handle the full technical onboarding. Most clients are live within two weeks.
01
Technical scoping call
We assess your current infrastructure, carrier relationships, call volumes, and agent workflow requirements. No sales deck, just engineers asking the right questions.
02
Infrastructure provisioning
Your isolated tenant environment is configured and tested on our colocated Nairobi infrastructure. SIP trunks, DID numbers, routing rules, and recording policies are set up to your spec.
03
Integration and testing
SIP trunks, CRM integrations, and agent desktops are validated against your live Safaricom and Airtel network paths. We run parallel testing before any cutover.
04
Go live with SLA
Production cutover with a signed Master Services Agreement, defined escalation paths, 24/7 monitoring, and ongoing managed support from our Nairobi engineering team.
Built for regulated, high-volume environments
Our VoIP infrastructure and cloud contact centre platform were designed for sectors where voice reliability, compliance, and data governance are non-negotiable requirements.
Banks and Microfinance Institutions
CBK-regulated lenders need cloud contact centre infrastructure that handles high outbound dialler volumes, enforces call recording retention, and integrates with core banking APIs.
- Compliant call recording and retention
- Predictive dialler for collections
- Core banking system integration
- Real-time agent loan data overlay
Telcos and Mobile Network Operators
MNOs and MVNOs require carrier-grade SIP peering, interconnect routing, and scalable subscriber-facing IVR, delivered by engineers who speak the same technical language.
- SIP trunk origination and termination
- MVNO and MVNE voice layer build-out
- A2P SMS and voice interconnect
- Number portability and DID management
BPO and Contact Centre Operators
Outsourced contact centres need flexible multi-tenant infrastructure that onboards new clients quickly, isolates their data, and scales agents up or down on short notice.
- Rapid tenant provisioning
- Per-client routing and reporting isolation
- WebRTC agent desktops, no hardware required
- White-label platform options
Enterprises and Development Organisations
Large enterprises and NGOs running field operations across East Africa need voice infrastructure that works on low-bandwidth mobile networks across multiple countries.
- Safaricom zero-rating architecture
- Field agent WebRTC deployments
- Multi-country DID presence
- AI-powered IVR for citizen services
Live in Kenya. Present across East Africa.
Zerxis operates a live production network in Kenya with established entities and in-country numbers across Uganda, Zambia, and Malawi. A Mauritius holdco supports institutional and cross-border partnerships.
MauritiusActive
Zerxis Holdings Ltd, Holdco entity
Common questions
If you have a question not answered here, call or email us directly.
Ready to talk infrastructure?
Whether you need a replacement contact centre platform, SIP trunking, or an AI voice integration, speak to our engineering team directly. We respond within one business day.
Kenya (HQ)
East Africa
Email and Web
Postal Address
P.O. Box 777-00200
Nairobi, Kenya