Know If Your SIP Infrastructure Will Hold. Prove It to Anyone Who Asks.
Load test up to 10,000 concurrent calls. Get root cause diagnosis when quality drops. Generate independent evidence your customers, partners, and SLA contracts can trust.
- Run your first load test in minutes — not weeks of manual scripting
- Automatic root cause diagnosis when quality drops — not just a MOS number
- Independent measurement both sides of an interconnect can trust
- Deploy test agents on-premise — your traffic never leaves your network
No hardware. No procurement. No manual scripting.
The Trust Layer for SIP Infrastructure
10K+
Concurrent Calls
70+
Quality Metrics
5 min
To First Load Test
24/7
Continuous Verification
Measure. Diagnose. Prove.
Not just numbers — evidence your team, your customers, and your contracts can trust.
SIP Load Testing
Run 10,000 concurrent calls. See exactly where your infrastructure breaks — and why. Five minutes, not five days of manual scripting.
Root Cause Diagnosis
When quality drops, get automatic correlation of SIP signaling and RTP metrics. Know what broke and what to fix — not just that something broke.
Voice & Video Quality
70+ metrics per call, per direction, per second. Audio AND video as first-class citizens. CLI tools give you call counts. We give you call quality.
Independent Proof
Generate shareable quality reports from neutral infrastructure. Settle disputes, prove SLA compliance, and show customers your quality — with evidence, not claims.
Continuous Monitoring
24/7 probes verify quality against your SLA thresholds. Public status pages prove it to your customers. Alerts fire before they notice.
Network Impairment
Inject packet loss, jitter, and latency. Validate how your infrastructure handles real-world conditions — not just a clean lab.
Your Data Center
Deploy test agents on-premise. Your traffic and credentials never leave your network.
API & CI/CD
REST API + CLI. Automate quality gates in your pipeline. Block the deploy that degrades call quality.
How It Works
From setup to insights in three steps.
1.Configure
Point it at your SIP server. Set call volume, codecs, and thresholds. Five minutes.
2.Test
Hit run. Thousands of real calls with real media hit your infrastructure. Not silence packets — actual codec traffic.
3.Analyze
See exactly where quality degrades — which endpoint, which second, which direction. Export the evidence for your change management board.
Every Tool Gives You a Number. We Give You the Reason Behind It.
70+ metrics per call — voice, video, packet, and timing. Per endpoint, per direction, every second.
RTP Quality
Packets, loss, jitter, sequence analysis, out-of-order, duplicates
Audio Quality
R-factor, audio level, VAD, comfort noise, Opus metrics, MOS (G.107)
Video Quality
Bitrate, FPS, resolution, freeze/artifact count/duration, keyframe tracking
Call Timing
PDD, setup time, ring time, time-to-first-media, call result
Deep Visibility Into Every Call
Drill into per-endpoint statistics whether you are testing 10 or 10,000 calls. Visualize SIP message exchanges with ladder diagrams, analyze packet loss trends, and monitor quality metrics in real time.
Compare test runs, track call establishment timings, and identify outliers — all from one dashboard. Download call recordings and SDP content for offline analysis.
Book a DemoContinuous SIP Monitoring with Probes
Schedule automated test calls that run 24/7. Know about degradation before your customers do.
- Two modes: Active calling (CALLER) + Passive listening (CALLEE)
- Flexible scheduling: every 5 minutes or cron expressions
- Threshold monitoring across all quality metrics — set thresholds on any metric you choose
- Intelligent status: HEALTHY → DEGRADED → UNHEALTHY with sliding window
- HMAC-SHA256 signed webhooks with retry logic
- Auto-disable after repeated failures
SLA Enforcement & Public Status Pages
The only SIP testing platform with built-in public status pages
Give your customers real-time visibility into SIP infrastructure health. No login required.
- Public status pages with token-based sharing (no login required)
- 24h rolling uptime percentage per probe
- Timeline of recent checks — color-coded health history
- Multi-probe dashboards for carrier/platform monitoring
- Flexible probe limits that scale with your needs
- Embeddable status badges for your website
Built by Engineers Who Understand the Problem.
We built CallMeter because we were tired of the same broken workflow: CLI-based tools that only test signaling, platforms built on softphone libraries that smooth over the problems you're trying to find, legacy hardware locked behind months of procurement. There had to be a better way to test SIP infrastructure and prove it works.
Book a DemoBuilt From Scratch for Measurement, Not for Calls
Most testing tools are built on top of softphone libraries or CLI frameworks. We built our SIP and RTP stacks from the ground up — because measurement tools shouldn't hide the problems you're trying to find.
No CLI Limitations
Test real media behavior, not just signaling. Codecs, jitter buffers, video freezes, frame loss — all measurable at the protocol level.
Softphone Platforms Hide the Truth
Jitter buffers smooth spikes, codecs compensate for loss. We extract metrics before any smoothing happens. What you see is what your users hear.
Video as a First-Class Citizen
Same measurement depth for video as for audio. Freeze detection at millisecond precision, codec-specific quality analysis, frame-level diagnostics.
Full Ownership Compounds
We control every layer of the SIP and RTP stack. That means we ship metrics others can’t capture, support protocols others can’t reach, and evolve as fast as the standards do.
Cloud + On-Premise — Your Infrastructure, Your Rules
Use our managed cloud workers or deploy lightweight agents in your own data centers. Everything connects to one dashboard.
- Deploy workers on-premise — your test traffic never crosses the public internet
- One dashboard regardless of where workers run — no juggling multiple consoles
- Workers authenticate with revocable tokens — revoke access instantly if compromised
- Capacity-aware dispatch — tests automatically route to workers with available capacity
Comprehensive Protocol Support
Full SDP negotiation, multiple RTP profiles, and every codec your infrastructure needs.
Audio Codecs
Video Codecs
SIP Methods
RTP/RTCP
Security
Quality Standards
Telephony Features
Built on Standards, Not Personalities
70+ metrics following RFC and ITU-T standards — from packet-level jitter to codec-specific decoder errors. We don't invent proprietary scores — every measurement is standards-based.
Stop stitching together CLI tools, softphone libraries, and custom scripts. Get load testing, quality analytics, continuous monitoring, and SLA tracking in one platform — with an API for your CI/CD pipelines.
Book a DemoSee how it replaces your current stack.