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CallMeter

callmeter.io

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Spec score 8.7 #3 of 21 in VoIP Monitoring Software

What it is

CallMeter is a SIP stress-testing and VoIP analytics platform for evaluating, monitoring, and benchmarking voice infrastructure. It measures more than 90 real-time quality metrics for each call, second, endpoint, and direction. Configurable load tests can vary endpoint counts, SIP methods, authentication, and call duration, and capture SIP messages as ladder diagrams. Supported media includes audio codecs such as PCMU, PCMA, G.722, Opus, G.726-32, GSM, Speex, AMR, and iLBC, alongside H.264, H.265, VP8, and VP9 video.

Continuous probes can run as caller or callee on intervals or cron schedules, apply quality thresholds, track sliding-window status, and send webhook notifications. A REST API supports test runs, metric retrieval, probe management, and CI/CD quality gates for GitHub Actions, GitLab CI, and Jenkins. Users can choose managed cloud workers or Docker-based workers in private networks. With user-owned workers, SIP signaling and RTP media stay in the customer network; only aggregated quality metrics leave it. Pricing is on request. The seven-day free trial requires a valid payment method and becomes a paid subscription unless cancelled before it ends.

Spec sheet

What it does
CallMeter is a cloud SIP stress-testing and VoIP analytics platform for evaluating, monitoring and benchmarking voice infrastructure.Read 15 Oct 2026 · callmeter.io
Purpose
CallMeter is a cloud-based SIP stress testing and VoIP analytics platform for evaluating, monitoring, and benchmarking voice infrastructure.Read 1 Oct 2026 · callmeter.io
Security
The privacy policy states that CallMeter uses TLS 1.3 encryption in transit, AES-256 encryption at rest, application-level encryption for sensitive credentials, access controls and regular security assessments.Read 1 Oct 2026 · callmeter.io
Compliance
CallMeter states that it processes personal data in accordance with the GDPR and CCPA/CPRA.Read 1 Oct 2026 · callmeter.io
Support
General support is available at [email protected], with sales contact available for formal SLA agreements.Read 1 Oct 2026 · callmeter.io
Alerting
Probe state changes can send HMAC-SHA256-signed webhooks with retries and automatic disabling after repeated failures.Read 15 Oct 2026 · callmeter.io
API and CI/CD
A REST API provides programmatic test execution, metric retrieval, probe management and CI/CD quality gates for GitHub Actions, GitLab CI and Jenkins.Read 1 Oct 2026 · callmeter.io
API authentication
API keys use the cmk_ prefix, are shown only once, stored hashed and support role-derived permissions plus rotation and revocation.Read 15 Oct 2026 · callmeter.io
Billing limitation
Annual billing is paid upfront, saves approximately 16% versus monthly billing, and unused monthly or annual minute allocations do not roll over.Read 15 Oct 2026 · callmeter.io
CI/CD integrations
Documentation describes quality-gate workflows for GitHub Actions, GitLab CI and Jenkins.Read 15 Oct 2026 · callmeter.io
Cloud and on-premise workers
Customers can use managed regional cloud workers or deploy Docker workers in their own networks; on-premise traffic stays local and only metric summaries are sent to CallMeter.Read 15 Oct 2026 · callmeter.io
Cloud-worker limit
Cloud workers can reach only SIP infrastructure exposed to the public internet, while private infrastructure requires user-owned workers.Read 1 Oct 2026 · callmeter.io
Codec coverage
Documented audio codecs include PCMU, PCMA, G.722, Opus, G.726-32, GSM and Speex; video includes H.264, H.265, VP8 and VP9.Read 15 Oct 2026 · callmeter.io
Continuous monitoring
Probes can run continuously with caller and callee modes, interval or cron scheduling, quality thresholds, sliding-window status, and webhook notifications.Read 1 Oct 2026 · callmeter.io
Continuous probes
Scheduled caller and callee probes can run every five minutes or by cron schedule and evaluate configurable quality thresholds.Read 15 Oct 2026 · callmeter.io
Data locality
With user-owned workers, SIP signaling and RTP media remain in the customer network and only aggregated quality metrics leave it.Read 1 Oct 2026 · callmeter.io
Documentation depth
The documentation includes setup guides, worker deployment, API reference, troubleshooting, architecture, codec references and individual pages for more than 90 metrics.Read 15 Oct 2026 · callmeter.io
Independent academic mention
An energy-leak research paper lists the unrelated Android CallMeter project among analyzed applications and links to its GitHub repository.Read 15 Oct 2026 · sqlab-sustech.github.io
Independent GitHub name collision
A separate GitHub project called Call Meter 3G is an Android usage-monitoring app, licensed GPL-3.0 and discontinued in 2018; it is distinct from the SIP platform.Read 15 Oct 2026 · github.com
Independent repository activity
The separate Call Meter 3G repository shows its latest release as version 3.11.15 dated February 12, 2019.Read 15 Oct 2026 · github.com
Licence
The service, APIs and documentation are proprietary software licensed for internal business use during an active subscription.Read 15 Oct 2026 · callmeter.io
Limit: AI assistant status
The feature page marks the read-only local-model AI investigation assistant as coming soon rather than generally available.Read 15 Oct 2026 · callmeter.io
Limit: cloud reach
Cloud workers are intended for SIP infrastructure reachable from the public internet; private-network testing requires user-owned workers.Read 15 Oct 2026 · callmeter.io
Limit: signaling-only comparison
CallMeter’s own comparison says specialized open-source signaling generators can deliver higher pure SIP signaling throughput and remain useful for malformed-message or edge-case proxy testing.Read 15 Oct 2026 · callmeter.io
MCP server
CallMeter provides a read-only Model Context Protocol server whose tools are constrained by the supplied REST API key permissions.Read 15 Oct 2026 · callmeter.io
Media codecs
CallMeter supports audio codecs including PCMU, PCMA, G.722, Opus, G.726-32, GSM, Speex, AMR and iLBC, plus H.264, H.265, VP8 and VP9 video.Read 1 Oct 2026 · callmeter.io
Media security
The platform documents SIP TLS, SRTP, DTLS-SRTP and SDES-SRTP, with three SDES cipher-suite choices.Read 15 Oct 2026 · callmeter.io
MOS scoring
Voice MOS uses the ITU-T G.107 E-Model with codec-specific impairment factors, while video quality uses P.1201/P.1203 models.Read 15 Oct 2026 · callmeter.io
Network impairment
The platform can inject packet loss, variable jitter, fixed or variable latency, duplication, reordering and bandwidth limits.Read 15 Oct 2026 · callmeter.io
Pricing visibility
The public pricing page does not show dollar amounts; it says plans are based on concurrent call capacity and testing frequency and asks buyers to contact sales.Read 15 Oct 2026 · callmeter.io
Privacy compliance
CallMeter says it processes personal data under GDPR and CCPA/CPRA and uses EU transfer safeguards such as Standard Contractual Clauses.Read 15 Oct 2026 · callmeter.io
Quality metrics
It collects more than 90 real-time measurements per endpoint every second, including quality, network, timing, audio and video data.Read 15 Oct 2026 · callmeter.io
Real media
Endpoints negotiate and send actual audio and video through SIP/RTP rather than relying only on signaling or silent traffic.Read 15 Oct 2026 · callmeter.io
REST API
A project-scoped REST API under /api/v1/ can create and run tests, inspect projects, probes and registrars, retrieve metrics and gate CI/CD deployments.Read 15 Oct 2026 · callmeter.io
Security controls
The privacy policy states TLS 1.3 in transit, AES-256 at rest, application-level encryption for sensitive credentials, access controls and regular security assessments.Read 15 Oct 2026 · callmeter.io
SIP load testing
Tests can vary endpoint count, ramp-up, duration, SIP methods and authentication while capturing SIP messages with ladder diagrams.Read 15 Oct 2026 · callmeter.io
SIP protocols
Supported signaling includes REGISTER, INVITE, ACK, BYE, CANCEL, OPTIONS, UPDATE, REFER, MESSAGE, INFO, NOTIFY, SUBSCRIBE and PRACK.Read 15 Oct 2026 · callmeter.io
SIP testing
Load tests support configurable endpoint counts, SIP methods, authentication modes, call duration, and SIP message capture with ladder diagrams.Read 1 Oct 2026 · callmeter.io
Status pages
Public token-protected status pages show rolling 24-hour uptime, recent check history, multi-probe dashboards and embeddable badges.Read 15 Oct 2026 · callmeter.io
Support levels
Starter includes email support, Pro priority email, Business dedicated support and Enterprise dedicated support with SLA options.Read 15 Oct 2026 · callmeter.io
Target users
Use cases include carriers, network engineers, SRE and NOC teams, DevOps teams, MSPs, procurement teams and telecom managers.Read 1 Oct 2026 · callmeter.io
Trial conditions
The seven-day free trial requires a valid payment method and converts to a paid subscription unless cancelled before it ends.Read 1 Oct 2026 · callmeter.io
Worker authentication
User-owned workers authenticate with revocable tokens and tests are dispatched according to available capacity.Read 15 Oct 2026 · callmeter.io
Workers
CallMeter offers managed cloud workers and Docker-based user-owned workers that can run inside private networks.Read 1 Oct 2026 · callmeter.io

Plans and prices

Business Priced on request monthly or annual 50,000 audio min/month · 12,500 video min/month · 200 concurrent audio streams · 50 concurrent video streams · 10 workers/100 endpoints each · 50 probes · 180-day retention · on-premise workers · advanced analytics · full API · dedicated support Read 15 Oct 2026 · callmeter.io
Enterprise Priced on request custom monthly or annual agreement custom or unlimited minutes · custom concurrency · unlimited workers/endpoints/probes · dedicated account management · custom SLA · multi-year retention · SSO · onboarding Read 15 Oct 2026 · callmeter.io
Enterprise / White-Label Priced on request monthly or yearly, cancel anytime multi-tenant · branded · resellable Read 1 Oct 2026 · callmeter.io
Pro Priced on request monthly or annual 10,000 audio min/month · 2,500 video min/month · 50 concurrent audio streams · 10 concurrent video streams · 5 workers/50 endpoints each · 10 probes · 90-day retention · status pages · webhooks · media uploads · priority email support Read 15 Oct 2026 · callmeter.io
Professional Priced on request monthly or annual features, usage limits, and service levels vary Read 1 Oct 2026 · callmeter.io
Starter Priced on request monthly or annual 2,000 audio min/month · 500 video min/month · 10 concurrent audio streams · 2 concurrent video streams · 2 workers/25 endpoints each · 3 probes · 30-day retention · API · email support Read 15 Oct 2026 · callmeter.io

Every CallMeter plan and price →

Strong points and limits

Strong points

  • Measures more than 90 real-time quality metrics.
  • Configurable SIP load tests include ladder diagrams.
  • Continuous probes support thresholds and webhook alerts.
  • REST API supports CI/CD quality gates.
  • User-owned workers keep SIP signaling and media in-network.

Limits

  • Pricing is available on request.
  • The seven-day trial requires a payment method.
  • Trial converts to paid unless cancelled.
  • Cloud workers reach only publicly exposed SIP infrastructure.

Who it suits

CallMeter suits carriers, network engineers, SRE and NOC teams, DevOps teams, MSPs, procurement teams, and telecom managers. Its user-owned workers may suit teams testing SIP infrastructure inside private networks.

Verdict

CallMeter combines configurable SIP load testing with continuous VoIP monitoring and automation. Check worker requirements and trial terms before starting; pricing is on request.

Where Specifiction places it

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