Scaling Your Communication Without Limits
As businesses grow, so do their communication needs. Whether you're onboarding new team members, expanding departments, opening remote offices, or powering multiple applications, one thing becomes clear fast — you need a communication system that can scale effortlessly.
Most platforms restrict the number of SIP accounts you can create, charge per user, or require complicated setup processes. That slows you down and drives up costs.
Opentact changes that.
With Opentact’s cloud-native communication engine, you can create and manage unlimited SIP accounts — securely, efficiently, and without paying extra licensing fees. It’s built for startups, enterprises, SaaS providers, call centers, and anyone who needs powerful, flexible voice infrastructure without operational friction.
Let’s dive into how you can manage unlimited SIP accounts inside Opentact and why this unlocks an entirely new level of communication freedom.
1️⃣ Understand What a SIP Account Represents
A SIP account is like a digital identity for a device or user — allowing them to make and receive calls within your communication system.
With Opentact, you can create unlimited SIP accounts for:
Employees across departments
Remote or hybrid workers
Call center agents
Softphone users
Internal tools or apps
Automated IVR or AI call flows
Test environments for developers
No additional hardware, licenses, or extensions required. Each SIP user becomes part of your cloud voice ecosystem instantly.
2️⃣ Create Your SIP Domain — the Foundation of Your Voice Network
Before adding SIP users, you need a SIP domain, which acts as your organization’s communication hub inside Opentact.
Inside the dashboard, simply:
Create a new SIP domain
Assign a custom subdomain (e.g., startupname.opentact.cloud)
Configure preferences like routing and security
You can create multiple SIP domains too — ideal for businesses running multiple brands, teams, or clients from a single Opentact account.
3️⃣ Add Unlimited SIP Users Instantly
Once your domain is ready, you can begin creating your SIP accounts.
Each SIP user only requires:
A username
A password
Optional advanced settings (IP restrictions, call limits, codecs)
The best part? 🔥 There is no limit on how many SIP accounts you can create.
Need 5 users today and 500 tomorrow? Done. Need separate users for staging and production? Easy. Need thousands of agent logins for a call center? No extra cost.
Opentact’s infrastructure is designed to scale with you — no bottlenecks, no licensing fees, no headaches.
4️⃣ Assign SIP Accounts to Devices or Softphones
Every SIP account can log in from a variety of devices, such as:
IP desk phones
Softphones (Zoiper, Linphone, MicroSIP)
WebRTC browsers
Mobile VoIP apps
PBX systems
AI-driven call bots
Just enter the SIP domain, username, and password — and you're online.
With Opentact’s WebRTC integration, your team doesn't even need physical phones. A browser tab becomes a full SIP endpoint.
5️⃣ Manage Your Entire SIP Ecosystem from One Dashboard
Unlike legacy PBX systems, Opentact makes SIP management effortless.
From the dashboard, you can:
View all SIP users in real time
Monitor their registration status
Track call activity
Disable, delete, or rotate credentials
Set call limits to prevent misuse
Enforce IP whitelisting
Assign routing rules
Whether you’re running 20 users or 20,000, the interface stays clean and easy to manage.
6️⃣ Add Security and Fraud Protection to Every SIP User
Telecom fraud is a real threat. But Opentact makes it easy to protect every SIP user with:
Encrypted SIP signaling (TLS)
Secure RTP (SRTP) for voice
Geo-restrictions
IP-based access control
Rate limiting
Real-time suspicious activity alerts
Even at massive scale, your SIP network stays safe and compliant.
7️⃣ Build Complex Voice Workflows at Scale
Unlimited SIP accounts allow you to create powerful voice infrastructures such as:
Cloud contact centers
Distributed sales teams
Virtual PBX systems
Multi-location office setups
AI-powered voice automation systems
Telecom SaaS products
Developer test environments
Everything is flexible, API-ready, and future-proof.
8️⃣ Automate SIP Provisioning with APIs (Perfect for SaaS Startups)
If you're building a platform that requires SIP users — like a call center tool, CRM, online PBX, or voice app — Opentact’s API lets you:
Auto-create SIP accounts
Update credentials
Retrieve registration status
Assign numbers automatically
Generate call logs
Trigger webhooks
This makes Opentact the ideal backend engine for SaaS builders who need instant, unlimited provisioning.
9️⃣ Track Performance and Call Metrics at Scale
With Opentact’s built-in analytics, you can monitor:
Call volume
Call durations
Answer rates
Device performance
Agent activity
Inbound vs outbound traffic
This helps teams optimize performance, staffing, and workflows as they grow.
🔟 Scale Without Ever Paying More for More Users
This is the ultimate advantage.
Most providers charge per SIP user or per seat. Opentact charges nothing extra for unlimited SIP users — whether you have 10 or 10,000.
That means startups, growing businesses, and enterprises save thousands each year, all while enjoying enterprise-grade performance.
Conclusion: Unlimited SIP Accounts = Unlimited Growth
Managing SIP accounts shouldn't be a struggle — and it definitely shouldn’t cost you per user.
With Opentact, you get:
Unlimited SIP users
Unlimited SIP domains
API provisioning
Secure SIP
Global routing
Real-time monitoring
Cloud-native scalability
Whether you're building a voice product, scaling your team, or running large telecom operations, Opentact gives you the freedom to grow without limits.
🚀 Start managing unlimited SIP accounts with Opentact today.
👉 Learn more at www.opentact.org!