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Telecom Log Analysis

AI-Powered Telecom Log Analysis

Debug modem issues faster with logcat.ai that understands LTE and 5G NR protocols — NAS, RRC, SIP, VoLTE, and VoNR. Upload plaintext modem logs from any chipset vendor, radio logcat, or kernel traces and get actionable insights in seconds.

What We Analyze

Upload plaintext telecom diagnostic logs from any of these sources for AI-powered analysis

Modem Diagnostic Logs

Plaintext modem diagnostic logs from any vendor — Qualcomm QCAT exports, MediaTek MTKLogger output, Samsung Shannon modem logs, or any tool that produces decoded NAS, RRC, PHY, and MAC messages.

Logcat Radio Logs

Android logcat output focused on telephony — RIL messages, TelephonyManager events, IMS registration, and modem trace data.

Dmesg Kernel Logs

Linux kernel logs from the modem subsystem — driver initialization, firmware loading, crash traces, and hardware-level modem events.

IMS/VoLTE/VoNR Captures

Network packet captures containing SIP signaling, IMS registration flows, and VoLTE/VoNR call setup messages for voice-over-IP debugging.

How to Export Your Logs

Step-by-step guides for capturing the right logs for analysis

Qualcomm (QCAT)

  1. 1.Capture diagnostic logs using QXDM Professional
  2. 2.Open the captured log file in QCAT
  3. 3.Go to Tools → Convert log to TXT
  4. 4.Upload the exported .txt file to logcat.ai

MediaTek (MTKLogger)

  1. 1.Capture modem logs using MTKLogger (DebugLoggerUI on Android 10+) — access via *#*#3646633#*#*
  2. 2.Modem logs (mdlog) are in binary format — decode using MediaTek ELT tool
  3. 3.Export decoded logs as plaintext
  4. 4.Upload the exported text file to logcat.ai

Samsung (Shannon/Exynos)

  1. 1.Capture CP logs via Samsung SysDump — dial *#9900# and run CP-based log
  2. 2.Decode logs using ShannonDM (Exynos) or QXDM/QCAT (Snapdragon)
  3. 3.Export decoded logs as plaintext
  4. 4.Upload the exported text file to logcat.ai

Radio Logcat

  1. 1.Connect device via ADB
  2. 2.Run: adb logcat -b radio > radio.log
  3. 3.Upload the saved log file to logcat.ai

All logs must be in plaintext format. Binary proprietary formats must first be exported to text using their respective vendor tools. We also accept Android logcat, kernel (dmesg) logs, and bugreports to assist with investigation. Note: vendor tool workflows may change across versions — refer to your vendor's documentation for the latest steps.

Why Telecom Debugging Is Hard

Modern cellular stacks are among the most complex software systems in existence

Protocol Complexity

NAS, RRC, SIP, RTP, GTP — hundreds of message types across multiple protocol layers, each with their own state machines and failure modes.

VoLTE/VoNR Call Setup Failures

A single VoLTE or VoNR call touches RRC connection setup, NAS attach, IMS registration, SIP INVITE, and RTP negotiation — failure at any point kills the call.

Needle in a Haystack

Thousands of repetitive PHY/MAC entries, periodic measurement reports, and routine signaling — the actual issue is often buried in a sea of normal traffic.

Cross-Layer Correlation

When the modem reports a failure, is it a radio issue, a network reject, a SIM problem, or an Android framework bug? Connecting events across layers requires deep expertise.

Built for Telecom Engineers

Purpose-built AI analysis tools that understand 4G LTE and 5G NR protocols

Deep Research

Multi-step AI investigation within a single log file. Ask questions like 'trace the attach failure through NAS messages' and the AI iteratively searches, analyzes, and builds a complete investigation.

Delta Cross-Layer Analysis

Upload multiple files — modem export, logcat, and dmesg — and Delta correlates events across all layers. See how a modem-layer event connects to the Android framework.

Learn more about Delta

Protocol-Aware Analysis

logcat.ai understands NAS message flows (EMM/ESM and 5GMM/5GSM), RRC state transitions, SIP dialog sequences, and their interdependencies across LTE and 5G NR — not just text pattern matching.

AI Root Cause Analysis

Pattern recognition across thousands of log lines identifies the root cause, not just the symptom. Trained on real-world telecom failure patterns.

Deep Research for Telecom

Watch the AI trace through protocol layers to investigate complex telecom issues step by step

Telecom Protocol Investigation

Multi-step analysis across NAS, RRC, and SIP layers for LTE and 5G NR

"Why did the VoLTE call drop?"
Parse Protocol Messages
Trace NAS/RRC Flow
Analyze SIP Signaling
Identify Root Cause
Root Cause Identified

NAS EMM Cause #19: ESM failure

3GPP TS 24.301 • EMM Attach Reject
AI traces NAS/RRC/SIP signaling flows and correlates with 3GPP specifications

Cross-Layer Correlation with Delta

See how Delta correlates events across modem logs, logcat radio, and kernel dmesg to find the real root cause

Delta Correlation Engine

Multi-file cross-layer analysis

Uploading...
Modem Export
14:32:03 NAS: Attach Request sent
14:32:04 NAS: Auth Response OK
14:32:05 NAS: Attach Reject #19
14:32:06 NAS: Detach Request
Logcat Radio
14:32:03 RIL: requestSetup
14:32:04 RIL: setRadioPower ON
14:32:05 RIL: registration failed
14:32:06 RIL: dataCallListChanged
IMS SIP Trace
14:32:03 INVITE sip:+1555@ims.net
14:32:04 100 Trying → 183 Progress
14:32:05 503 Service Unavailable
14:32:06 BYE → session terminated

Who Uses This

Trusted by telecom engineers across the industry

Modem Engineers

Carrier and OEM engineers debugging NAS attach failures, handover issues, RRC connection problems, and modem firmware crashes.

VoLTE/VoNR/IMS Engineers

Engineers working on VoLTE and VoNR call setup, IMS registration flows, SIP signaling issues, and voice quality analysis across 4G and 5G operator networks.

Field Test Engineers

Drive test and field validation engineers analyzing coverage investigations, handover performance, and network-specific issues across regions.

Frequently Asked Questions

Common questions about telecom log analysis

We support any plaintext log file — modem diagnostic exports from Qualcomm QCAT, MediaTek MTKLogger, Samsung CP logs, Android logcat (including radio buffer), dmesg/kernel logs, and pcap captures. The key requirement is that logs must be in human-readable text format.

You will need vendor tools to capture and export modem diagnostic logs as plaintext — Qualcomm QCAT/QXDM, MediaTek ELT, Samsung ShannonDM, etc. However, logcat.ai itself requires no special tools or plugins. Once you have plaintext logs, simply upload them. If you already have plaintext logs from logcat, dmesg, or other sources, you can upload those directly without any vendor tools.

Not currently. Proprietary binary formats (Qualcomm DLF/ISF, MediaTek MCL, etc.) must be exported to plaintext using their respective vendor tools before uploading. We work with any plaintext output regardless of which tool produced it. This applies to all binary log formats — DLF, ISF, HDF, QMDL, QMDL2, and any other vendor-specific binary encoding. If your tool can export it as text, we can analyze it.

Our AI understands NAS (EMM/ESM for LTE, 5GMM/5GSM for NR), RRC, SIP/IMS, MAC/PHY layer messages, and their interactions. It can trace issues across protocol layers and identify root causes. This is not an exhaustive list — the AI works with any plaintext protocol messages including GTP, RTP, PDCP, RLC, and others as long as they appear in your logs.

Deep Research performs multi-step AI investigations within your log file. It iteratively searches for relevant events, follows protocol flows, and builds a comprehensive analysis — similar to how an expert engineer would manually trace through the logs, but in seconds.

Deep Research investigates a single log file in depth — it searches, analyzes, and follows protocol flows within one file. Delta is a multi-file comparison engine — you upload two or more log files (e.g., modem export + logcat radio + kernel log) and Delta correlates events across all of them. Use Deep Research when you have one file and a question. Use Delta when you need to connect events across multiple files, compare behavior between devices, or track down cross-layer issues.

Yes. Your logs are processed in isolated environments, encrypted at rest and in transit, and never shared between users. We understand telecom logs may contain sensitive network configurations — see our privacy policy for full details.

Start Analyzing Your Telecom Logs

Upload your modem diagnostic logs, logcat radio output, or kernel traces and let logcat.ai do the heavy lifting