Drop a PCAP.
Get a diagnosis.

SIPScope reconstructs SIP calls, scores voice quality, and pinpoints failures across multi-leg captures — entirely in your browser. No upload. No cloud. No waiting.

Open SIPScope See how it works
14 analysis views 100% client-side 5 file formats 7+ RFCs checked
SIP TRACE · CALL_ID a3f9… live
analyser.js · capture.pcap
[14:32:01] parse capture.pcap → 12,847 packets
[14:32:01] extract SIP messages → 42 dialogs
[14:32:02] decode RTP streams → 31 streams · PCMA
[14:32:02] score voice quality → MOS 3.42 (jitter)
[14:32:03] diagnose anomalies → 2 critical · 5 warnings
✓ analysis complete (2.1s)
100%
Client-side · zero upload
14/14
Analysis views built-in
.PCAP + 4
File formats supported
RFC 3261
+ 4566 · 3550 · 3264 · 3262

A full SIP/VoIP diagnostic suite — all in one window.

Pick any layer of the stack and SIPScope has a view for it. From RFC compliance down to RTP packet timing, from MOS scoring to AI-ranked root cause analysis.

Featured
AI Diagnosis with confidence scores

SIPScope ranks anomalies by severity, surfaces the root cause in plain English, and links each finding to the exact packet that proves it. Built for engineers who escalate, not guess.

CRITICAL 98% confidence
Carrier returned 503 Service Unavailable on every INVITE
7 of 7 outbound calls failed at the same SBC hop · No 100 Trying received within 500ms · Retry-After header absent — likely upstream capacity exhaustion.
View remediation →
WARN Jitter spikes above 30ms on 3 RTP streams from 10.2.41.7 87%
WARN Late SDP answer in re-INVITE — RFC 3264 §5.3 violation 94%
+ 4 more findings  ·  ranked by confidence
SIP Trace ladder

Per-call message ladder · SDP diff · timing per hop.

Voice Quality (MOS)

E-Model scoring per stream with jitter & loss breakdown.

4.32MOS · GOOD
Jitter2.1 ms
Loss0.04 %
CodecPCMA
RTP Forensics

Packet-level inspection · gap detection · RTCP reconciliation.

Codec & SDP

Offer/answer comparison · negotiation outcome.

PCMA · 8000 Hz SELECTED
PCMU · 8000 Hz offered
telephone-event DTMF
RFC Compliance checks

Every dialog validated against the relevant standards. Findings link back to the offending message.

RFC 3261
SIP Core
RFC 4566
SDP
RFC 3550
RTP/RTCP
RFC 3264
Offer/Answer

Three steps. Two seconds.

No setup. No accounts. Drop a file in your browser and start reading the diagnosis.

01DROP
Drag your captures

PCAP, PCAPNG, HTML message-flow exports, SBC text dumps, log files. Multiple files cross-correlate by Call-ID automatically.

Drop capture files here
.PCAP.PCAPNG.HTML.TXT.LOG
02ANALYSE
Engine runs in your browser

Parsing · call reconstruction · SDP correlation · RTP decoding · MOS scoring · RFC validation · AI synthesis. All local, all parallel.

Parse PCAP✓ 12,847 pkts
Reconstruct calls✓ 42 dialogs
Score voice quality62%
03DIAGNOSE
Read the verdict

Ranked anomalies with confidence scores, root-cause analysis, RFC-cited remediation steps, escalation-ready report exports.

FAIL503 from carrier on outbound
WARNJitter spike on 3 streams
OKRegistration health nominal

Your captures never leave your browser.

Network captures contain phone numbers, internal IPs, sometimes decodable audio. SIPScope was built around this. The entire engine — parsing, decoding, AI analysis, audio playback — runs locally.

No backend. No telemetry. No cookies. No accounts. The Content-Security-Policy is locked: connect-src 'none'.

Your browserParsing · decoding · AI
LOCAL
Your file systemcapture.pcap · report.json
LOCAL
The cloudNever reached. Ever.
BLOCKED

Ready to diagnose?

No signup, no setup, no upload. Drop a capture and you'll have a verdict before your coffee cools.

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