Carrier-Grade Infrastructure

The full-stack
telecom network
for contact centers.

Wholesale SIP, predictive dialer, AI voice gateway, and number intelligence — built by operators, running exclusively on US infrastructure. One platform. One network. No compromises.

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Trusted by

500+ Contact Centers Enterprise VoIP Carriers AI Voice Companies UCaaS Providers
200+

Countries covered

105

Products across 10 categories

<300ms

AI voice latency

99.999%

Enterprise uptime SLA

Why Nexcadia

Infrastructure that operators trust.

Every layer of the stack — from physical PoPs to your agent's browser — is built, maintained, and supported by Nexcadia.

Carrier-Grade Voice

SIP trunking, wholesale origination/termination, 99.999% SLA across 5 US PoPs. PSTN-grade reliability with software-defined flexibility.

SIP Trunking5 US PoPs99.999% SLA

Full Contact Center

Predictive, progressive, power, and preview dialers. Visual IVR builder, ACD, agent desktop, campaign management — every tool in one platform.

Predictive DialerIVRACD

AI-Powered Voice

AI Voice Gateway bridges live SIP calls to LLM agents. Real-time transcription, post-call summaries, sentiment scoring — OpenAI, ElevenLabs, NVIDIA compatible.

OpenAI Realtime<300msBYOM

Number Intelligence

STIR/SHAKEN attestation, branded caller ID via TransUnion TruContact, spam monitoring, automated number rotation, and CNAM optimization.

STIR/SHAKENBranded CIDSpam Shield

Developer-First API

RESTful provisioning API with OpenAPI 3.0 spec. SDKs for Node.js, Python, and PHP. Webhook events with retry logic and signing secrets. Sandbox environment included.

REST APIWebhooksNode / Python / PHPOpenAPI 3.0 
# Provision a DID via API
curl -X POST \
  https://api.nexcadia.com/v1/dids/provision \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "area_code": "305",
    "type": "local",
    "trunk_id": "trnk_abc123"
  }'
How It Works

Up and running in minutes.

Nexcadia is designed for operators who move fast. Connect, configure, and start routing calls with or without our API.

01

Connect your SIP endpoint

Register your SBC, softswitch, or bring your own carrier. Native connectors for Genesys, Cisco, Five9, Zoom, Teams, and RingCentral included.

02

Configure via portal or API

Provision numbers, build IVR flows, configure routing rules, and set up dialer campaigns through the self-service portal or our RESTful API.

03

Start routing calls

Live traffic flows immediately. Monitor in real time with CDR export, live wallboard, webhook events, and AI-powered post-call analytics.

Solutions

Built for every player in the stack.

Whether you run a contact center, build AI voice agents, or operate wholesale carrier infrastructure — Nexcadia has purpose-built tooling for your use case.

Contact Centers

Outbound & Inbound Operations

Predictive dialer, local presence, CID rotation, TCPA compliance suite, agent tools, and campaign management built for high-volume environments.

Learn more AI Voice

Build AI Voice Agents

SIP-to-AI bridge with sub-300ms latency. Bring your own model — OpenAI Realtime, ElevenLabs, NVIDIA. Real-time transcription, sentiment analysis, CRM push.

Learn more Carriers & Resellers

Wholesale & White-Label

Wholesale voice termination, number inventory management, private SIP peering, and a complete white-label reseller program with API provisioning.

Learn more Enterprise

Enterprise IT & UCaaS

BYOC connectors for Teams, Genesys, Cisco, Five9, Zoom, and RingCentral. Geo-redundant SIP, hosted SBC, private peering, dedicated AM, and 24/7 NOC.

Learn more

Ready to build on Nexcadia?

Join the operators, carriers, and developers running on US carrier-grade infrastructure.

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