CallMeter vs sip-exporter

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.

sip-exporter is a free, open-source Linux and self-hosted eBPF sensor for SIP and correlated RTP monitoring. It exposes Prometheus metrics at /metrics, including SIP traffic, active sessions, RFC 6076 performance, voice quality, RTP, RTCP, fraud, and diagnostic measures. RTP analysis covers jitter, packet loss, packet-delay variation, and E-model MOS; RTCP sender and receiver statistics include loss, jitter, and round-trip time linked by SSRC. Documented fraud indicators include registration scans, INVITE bursts, account takeover after a registration country change, and False Answer Supervision. A Grafana dashboard has 11 sections, with Prometheus alert examples and Alertmanager examples for Slack, PagerDuty, and email. Metrics are documented for Prometheus, VictoriaMetrics, Grafana Cloud, and compatible scrapers. Deployment uses a single container that must run privileged with host networking. Capture is limited to IPv4/UDP SIP and related RTP/RTCP, and the sensor must see signaling and media on the same call path.