Telecom Just Got Developer-Friendly
APIs are the backbone of modern software, enabling startups and enterprises alike to build powerful applications without reinventing the wheel. But when it comes to telecom — voice calls, SMS routing, SIP management — most platforms are still locked in legacy complexities.
Opentact changes that. With clean, modern, and well-documented APIs, Opentact gives developers full programmatic control over their telecom stack—from provisioning numbers to managing calls, tracking SMS, and configuring intelligent voice flows.
Whether you're a SaaS founder, a VoIP provider, or a product engineer looking to add real-time communication features, Opentact offers the APIs and infrastructure you need.
🧰 What Can You Build with Opentact APIs?
Opentact’s APIs unlock carrier-grade functionality, with the simplicity of a cloud platform. Here's what you can build:
1. Custom Call Flows
Use the API to create, update, and control call logic:
Set up IVRs
Route by time of day
Add call forwarding, voicemail, or recording
Inject ChatGPT or TTS for dynamic voice response
2. Phone Number Management
Provision local & toll-free DIDs across the US and Canada:
Search, order, and release numbers via API
Assign numbers to specific SIP users or call flows
Enable SMS, voice, or both
3. Inbound & Outbound SIP Control
Register SIP users via API
Assign SIP domains/subdomains
Route SIP traffic to vendors or specific users
Manage P2P calling across your network
4. Real-Time Call Tracking & Analytics
Monitor every inbound and outbound call:
Capture call duration, time, origin, result
Tag calls by source (campaign, channel, etc.)
Build custom dashboards or analytics tools
5. Programmable SMS Gateway
Send and receive messages via RESTful API:
Fully TCR 10DLC compliant
Enable two-way communication
Webhook support for message delivery events
6. AI Integration & Webhooks
Inject AI with ChatGPT or other engines
Trigger external APIs during calls (CRM, support systems)
Capture DTMF input or spoken text for dynamic flows
🧪 Sample Use Case: Build a Smart Appointment Reminder System
Let’s say you run a healthcare SaaS. With Opentact’s APIs, you can:
Automatically send SMS reminders 24 hours before appointments
Let patients confirm or reschedule via voice (with ASR)
Trigger email or CRM updates via webhook
Record patient responses and store them for audit
All with minimal code. All hosted in the cloud. All secured and compliant.
👨💻 Why Developers Love Opentact APIs
✅ RESTful architecture for easy integration
✅ Detailed documentation with code examples
✅ Fast provisioning of numbers and users
✅ Real-time event webhooks
✅ Sandbox for testing and development
✅ Full control of call logic, flows, and AI
Whether you're building your first voice app or replacing legacy systems, Opentact provides the developer toolkit you actually want to use.
🔐 Built-In Security and Compliance
Opentact’s APIs come with:
Token-based authentication
IP whitelisting
Secure media transport
STIR/SHAKEN-ready SIP authentication
TCR-compliant SMS registration flows
Your builds remain secure, legal, and scalable—by default.
🧹 Integrate with the Tools You Already Use
Opentact plays nicely with:
Zapier / Make / Webhooks
CRM tools (Salesforce, HubSpot)
Helpdesks (Zendesk, Freshdesk)
Payment systems
Database backends and logging tools
If it supports REST or webhook calls, you can connect it to Opentact.
🌍 Built to Scale With You
Start small. Scale big. Whether you're handling 10 calls/day or 10,000, Opentact’s cloud-native backend supports elastic growth, low-latency delivery, and global connectivity.
🛠️ Start Building in Minutes
Want to test it yourself? Create an account on www.opentact.org, get your API keys, and spin up your first voice or SMS flow today.
🎯 Conclusion: Telecom Dev Tools That Don't Suck
Let’s face it — most telecom APIs are stuck in the 2000s.
Opentact offers a developer-first telecom experience, complete with clean APIs, AI-ready infrastructure, and the kind of control real builders need.
Skip the gatekeepers. Build your own future of communication.
👉 Ready to build your first voice or SMS app in minutes? Explore our API docs, test live demos, and join the Opentact dev community at 🌐 www.opentact.org — Your telecom infrastructure, your way.