CallMeter Documentation
Complete documentation for CallMeter, the enterprise SIP and RTP testing platform. Learn how to stress test VoIP infrastructure, monitor call quality, and prove SLA compliance with 150+ real-time metrics.
CallMeter Documentation
CallMeter is the enterprise platform for SIP stress testing and VoIP quality monitoring. Whether you are validating a new SIP trunk deployment, running continuous quality probes on production infrastructure, or proving SLA compliance to customers, CallMeter gives you the tools to test at scale with real media and measure what matters.
This documentation covers everything you need to get started, configure advanced test scenarios, interpret quality metrics, and integrate CallMeter into your workflows.
Get Started in 5 Minutes
New to CallMeter? Follow the quickstart to run your first SIP test with real audio and video metrics in under five minutes.
Quick Start
Sign up, configure a registrar, create a test, and analyze your first results. The fastest path from zero to actionable VoIP metrics.
Create an Account
Set up your organization, invite team members, and configure role-based access for your telecom engineering team.
Key Concepts
Understand the building blocks of CallMeter: organizations, projects, registrars, tests, groups, probes, workers, and metrics.
Platform Capabilities
CallMeter combines SIP signaling, real RTP media generation, and deep packet-level quality analysis into a single platform. Here is what sets it apart.
SIP Stress Testing
Generate 10 to 10,000+ concurrent SIP endpoints with configurable audio and video payloads. Simulate real-world call patterns with staggered buildup, multiple groups, and cross-group targeting.
Continuous Monitoring
Deploy lightweight probes that place SIP calls at regular intervals and evaluate quality thresholds. Detect degradation before users notice it and trigger webhooks on status changes.
150+ Real-Time Metrics
Collect MOS scores, jitter, packet loss, round-trip time, NACK counts, PLI requests, freeze events, audio levels, and dozens more metrics per endpoint per second. Every metric has a send and receive direction.
7 Audio and Video Codecs
Test with PCMA, PCMU, G.722, Opus for audio and H.264, VP8, VP9 for video. Match your production codec configuration exactly to get accurate quality baselines.
Cloud and On-Premise Workers
Run tests from CallMeter cloud regions or deploy workers on your own infrastructure for testing behind firewalls, inside private networks, or at specific geographic locations.
Public Status Pages
Publish real-time SLA dashboards powered by probe data. Give customers, partners, and regulators transparent proof of voice quality and uptime.
API and CI/CD Integration
Automate test execution from your CI/CD pipeline. Trigger tests on every deployment, gate releases on quality thresholds, and fetch results programmatically.
Multi-Tenant RBAC
Five-level role hierarchy from Viewer to Owner. Scope access per project, control who can run tests versus who can only view results, and manage teams across organizations.
Why CallMeter?
Existing VoIP testing tools force a choice between free-but-limited open source tools that only test SIP signaling, or enterprise solutions that cost $50,000 or more per year. CallMeter fills the gap with full-stack SIP and RTP testing at a fraction of the cost.
Why CallMeter
See how CallMeter compares to legacy tools, open source alternatives, and enterprise platforms. Understand the value proposition for carriers, enterprises, and DevOps teams.
vs. Open Source Tools
How CallMeter compares to DIY testing stacks (SIPp + baresip), commercial platforms, and enterprise tools. Where each approach wins and where CallMeter fills critical gaps.
Use Cases
Explore 13 use cases across carriers, enterprise IT, DevOps, and compliance. Find your scenario and see exactly how CallMeter solves it.
Workers
Workers are the compute engines that run your SIP endpoints. Choose between CallMeter-managed cloud workers in multiple regions or deploy your own workers on-premise for testing behind firewalls and inside private networks.
Workers Overview
Understand the worker model, how endpoints are allocated, and how cloud and on-premise workers differ.
Deploy Your Own Workers
Run a worker on your own infrastructure with a single command. Test SIP servers behind firewalls, in specific network locations, or at customer sites.
Cloud Workers
Use CallMeter-managed workers across multiple geographic regions. No infrastructure to manage, automatic scaling, and instant availability.
Platform at a Glance
| Capability | Details |
|---|---|
| Concurrent Endpoints | 10 to 10,000+ per test |
| Real-Time Metrics | 150+ quality, network, timing, and media measurements per endpoint per second |
| Audio Codecs | PCMA, PCMU, G.722, Opus |
| Video Codecs | H.264, VP8, VP9 |
| SIP Transports | UDP, TCP, TLS, WebSocket |
| Monitoring | Scheduled probes with threshold alerting and webhook notifications |
| Status Pages | Public SLA dashboards powered by live probe data |
| Workers | Cloud-hosted or self-hosted on your infrastructure |
| Access Control | 5-level RBAC with per-project scoping |
| API | RESTful API for CI/CD integration and automation |
| Plans | Starter, Pro, Business, and Enterprise tiers with 7-day trial |
Documentation Sections
| Section | What You Will Find |
|---|---|
| Getting Started | Account setup, quickstart, and core concepts |
| Why CallMeter | Competitive positioning, comparisons, and use cases |
| User Guides | Step-by-step guides for projects, registrars, tests, probes, media, billing, and organization management |
| Workers | Cloud and on-premise worker deployment, networking, capacity, and troubleshooting |
| API Reference | Authentication, endpoints, and CI/CD integration |
| Metrics | Complete reference for all 150+ VoIP quality metrics |
| Reference | SIP response codes, codec details, endpoint statuses, and VoIP terminology |
| Troubleshooting | Common test failures, registration errors, and quality debugging |
| Roadmap | Upcoming features, planned improvements, and release timeline |
Ready to Start?
Get started at callmeter.io and run your first test in under five minutes.