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VoIPmonitor

voipmonitor.org

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Spec score 7.7 #11 of 21 in VoIP Monitoring Software

What it is

VoIPmonitor is an open-source packet sniffer paired with a commercial web GUI for monitoring, troubleshooting, and recording VoIP and RTC calls. It reports MOS, jitter, packet loss, delay, and RTCP data. Recording includes calls and SIPREC sessions, with policy-based retention and deletion rules. Troubleshooting tools provide packet captures, SIP ladder diagrams, audio waveforms, spectral analysis, and TLS/SRTP decryption. The GUI adds dashboards, OLAP analytics, scheduled reports, KPI alerts, and fraud-detection rules. Listed compatibility includes Kamailio, OpenSIPS, FreeSWITCH, Asterisk, Cisco, Avaya, Genesys, Mitel, AudioCodes, Ribbon, and Oracle SBC. Supported protocols include SIP, RTP, RTCP, SIPREC, SKINNY, MGCP, SS7, SCTP, WebRTC, Diameter, TCP, SSL, and TLS. The sniffer runs as a static Linux binary with x86 and ARM builds. Cloud CDR retention is 21 days, PCAP remains on the customer server, and the listed maximum is 2,000 channels. Cloud 3 channels costs $22 a month; On-Premise 10 channels costs $45 a month.

Spec sheet

Purpose
VoIPmonitor is an open-source packet sniffer with a commercial web GUI for monitoring, troubleshooting and recording VoIP/RTC calls.Read 3 Oct 2026 · voipmonitor.org
Intended users
The maker describes typical users as VoIP operators, call centres, enterprises, integrators and managed service providers.Read 3 Oct 2026 · voipmonitor.org
Deployment
The sniffer is a static binary that runs on Linux, and the maker lists builds for x86, ARM 32-bit and ARM 64-bit.Read 3 Oct 2026 · voipmonitor.org
Integrations
The site lists compatibility with Kamailio, OpenSIPS, FreeSWITCH, Asterisk, Cisco, Avaya, Genesys, Mitel, AudioCodes, Ribbon and Oracle SBC.Read 3 Oct 2026 · voipmonitor.org
Support
Support is included with the WEB GUI license, and the maker lists free deployment assistance.Read 3 Oct 2026 · voipmonitor.org
Founded
2003Read 23 Sep 2026 · voipmonitor.org
Company
The maker says VoIPmonitor is developed and operated by Martin Vit as an independent software vendor based in the Czech Republic.Read 3 Oct 2026 · voipmonitor.org
Analytics and alerts
The GUI provides dashboards, OLAP analytics, scheduled reports, KPI alerts and fraud detection rules.Read 3 Oct 2026 · voipmonitor.org
Call quality
It reports call quality metrics including MOS, jitter, packet loss, delay and RTCP data.Read 3 Oct 2026 · voipmonitor.org
Cloud data limits
Cloud CDR retention is 21 days, PCAP stays on the customer server, and the listed maximum is 2,000 channels.Read 3 Oct 2026 · voipmonitor.org
Compliance controls
The site describes DTMF suppression and a pause/resume API to help prevent recording cardholder data, along with automated retention and deletion rules.Read 3 Oct 2026 · voipmonitor.org
Protocols
Supported protocols listed include SIP, RTP, RTCP, SIPREC, SKINNY, MGCP, SS7, SCTP, WebRTC, Diameter, TCP, SSL and TLS.Read 3 Oct 2026 · voipmonitor.org
Recording
The product supports call recording, SIPREC session recording and policy-based retention and deletion rules.Read 3 Oct 2026 · voipmonitor.org
Troubleshooting
Its troubleshooting tools include packet captures, SIP ladder diagrams, audio waveforms, spectral analysis and TLS/SRTP decryption.Read 3 Oct 2026 · voipmonitor.org

Plans and prices

Cloud 3 channels $22 a month $22/mo 3 channels · Full features · CDR retention 21 days · PCAP stays on your server Read 3 Oct 2026 · voipmonitor.org
On-Premise 10 channels $45 a month $45/mo 10 channels · Full features · 100% offline · Unlimited retention Read 3 Oct 2026 · voipmonitor.org
Cloud 3 channels $259 a year $259/yr 3 channels · Full features · CDR retention 21 days · PCAP stays on your server Read 3 Oct 2026 · voipmonitor.org
On-Premise 10 channels $539 a year $539/yr 10 channels · Full features · 100% offline · Unlimited retention Read 3 Oct 2026 · voipmonitor.org

Every VoIPmonitor plan and price →

Strong points and limits

Strong points

  • Reports MOS, jitter, packet loss, delay, and RTCP
  • Provides packet captures and SIP ladder diagrams
  • Supports policy-based recording retention and deletion
  • Offers dashboards, reports, KPI alerts, and fraud rules
  • Includes Linux x86 and ARM builds

Limits

  • There is no free plan
  • Cloud CDR retention is limited to 21 days
  • Cloud PCAP remains on the customer server
  • Cloud plan maximum is 2,000 channels

Who it suits

It suits VoIP operators, call centres, enterprises, integrators, and managed service providers. The listed tools target teams monitoring call quality, recordings, troubleshooting, and fraud.

Verdict

VoIPmonitor combines packet-level diagnostics with recording, analytics, and alerts for VoIP and RTC environments. Choose between cloud and on-premise plans based on retention and deployment requirements.

Where Specifiction places it

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