Do you support Safaricom SIP trunks?

Yes. We have deep experience with Safaricom's SIP infrastructure and optimise RTP media paths specifically for their network. Safaricom SIP is one of the most common configurations we deploy and support.

Can you migrate us from an existing contact centre platform?

Yes. We handle full migrations including number porting, CDR history transfer, and parallel running periods so there is no service disruption during cutover. Most migrations complete within two weeks.

What does pricing look like?

Platform access starts from KES 15,000 per month, scaling with concurrent channels and usage. We do not charge per seat. All contracts include a signed MSA with defined SLAs and escalation paths. WhatsApp message charges are set by Meta and billed separately.

Is the platform suitable for CBK-regulated lenders?

The platform is designed for CBK-regulated financial institutions. It supports call recording with configurable retention, audit logging and data segregation. Using Zerxis does not by itself make an institution compliant: you remain responsible for your regulatory obligations, including customer notices, consent and retention policies. We can provide a technical compliance brief on request.

Do you offer white-label contact centre platforms for BPOs?

Yes. Multi-tenant isolation means each of your clients operates in a fully independent environment with separate routing, reporting, and DID management. White-label branding is supported.

Where is my data hosted?

Production workloads run on infrastructure operated by Zerxis, not shared public cloud. Hosting locations for each client are set out in their data processing agreement. Clients who need data kept entirely on their own premises can ask about an on-premise deployment. Zerxis is an ODPC Registered Data Controller (No. 00114/1) under the Kenya Data Protection Act.

Can I get references from current clients?

Yes. We can provide references from current clients in financial services and enterprise sectors on request. Contact us directly to arrange.

Zerxis Limited | Cloud Contact Centre and VoIP Infrastructure, East Africa

Full-stack voice infrastructure for cloud contact centre Kenya and East Africa

From SIP trunking and VoIP services to AI voice integration, we build and operate the core voice stack ourselves. Enterprise clients deal with one accountable provider for their voice infrastructure.

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

SIP Trunking and VoIP

Kamailio-based SIP routing with TLS/SRTP support and RTPengine media relay, tuned for Safaricom and East African network paths.

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. Configurable for financial-services data segregation and audit requirements.

Tenant IsolationDID ManagementAudit Logging

Messaging Solutions

A2P SMS and WhatsApp Business Platform (Cloud API) integration, alongside voice. Zerxis is a Meta Tech Provider. See how Meta's WhatsApp pricing works from October 2026.

WhatsApp pricing explained

A2P SMSWhatsApp Cloud 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 for Safaricom and the routing conditions of East African networks, and tests against the network paths your agents and customers actually use.

Safaricom SIP: optimisedEast African routing: tunedDesigned for CBK-regulated lenders

Inbound and outbound services

Zerxis provides the infrastructure and software layer. Managed contact-centre operations may also be available for selected deployments.

Inbound Services

Customer service and query resolution
Technical and helpdesk support
Reservations and bookings
Appointment management
Order processing
Multilingual contact centre support
Email support
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. Self-operated. Proven.

We build and run our own voice stack on Kamailio, FreeSWITCH and RTPengine. We don't resell someone else's cloud platform.

Core voice stack

LAYER	VALUE	STATUS
SIP Proxy	Kamailio 5.x	PRODUCTION
Media Relay	RTPengine	PRODUCTION
Switch	FreeSWITCH	PRODUCTION
WebRTC Gateway	Browser voice	PRODUCTION
Voice stack	Operated by Zerxis	PRODUCTION
Carrier interconnect	Safaricom SIP	PRODUCTION

Voice infrastructure built for East African networks, with carrier interconnect for Safaricom 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 on supported connections, with Diameter and SS7 interconnect experience, for financial-services clients operating under CBK and regional regulatory frameworks. ODPC Registered Data Controller No. 00114/1 under the Kenya Data Protection Act.

East African network expertise: deep familiarity with Safaricom and East African routing means we tune for the actual paths your calls traverse, not theoretical benchmarks.

Results from production

Case Study · Loan Collections

100,000+Calls

5Weeks

KES 5.5MPayment commitments

A Kenyan lender ran an AI voice dialler campaign on our infrastructure: 100,000+ calls in five weeks, KES 5.5M in payment commitments captured.

Automated calls in English and Swahili, M-Pesa payment prompts and campaign analytics, with the dialler and telephony on infrastructure operated by Zerxis.

Results from one campaign. Not a guarantee of future results.

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 the engineering questions that matter.

02

Infrastructure provisioning

With a signed agreement in place before any provisioning work begins, and payments staged against visible deliverables, your isolated tenant environment is configured and tested on our own voice 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 carrier paths. We run parallel testing before any cutover.

04

Go live with SLA

Production cutover under your Master Services Agreement, with defined escalation paths, monitoring and managed support, with response times set in your MSA.

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.

Call recording with configurable retention and audit controls
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.

Field agent WebRTC deployments
Multi-country DID presence
AI-powered IVR for citizen services

Live in Kenya. Registered in three more countries.

Zerxis operates in Kenya, with registered entities in Uganda, Zambia and Malawi.

KenyaLive

Nairobi HQ

+254 707 077 707 +254 205 293 024

UgandaRegistered entity

Zerxis Uganda Ltd. Not currently operating.

ZambiaRegistered entity

Not currently operating.

MalawiRegistered entity