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Step inside a live
telecom network

Run real commands on a live 2G/3G/4G/5G network simulation. Trace call flows, inspect protocols, and ask tel-IQ when you're stuck. No setup, no hardware.

Start for free → Browse all 124 labs

124 live labs across 106 real containers — 194 signalling flows, 167 distinct standards.

Built on the standards you'll work with in the field
3GPP IETF ITU ETSI O-RAN ALLIANCE GSMA NIST DVB IEEE OCI CNCF OMA SpecWorks TM Forum oneM2M DMTF Anuket

Powered by industry-standard open-source network functions — the same software class that runs production networks.

Learning Paths
Choose your starting point, or explore the full lab grid below
CS Core Deep Dive
The full 2G/3G circuit-switched track — LU, Voice, SMS, USSD, Security, 3G UTRAN, each live & decoded
Labs 01 → 96·97·98·99·100·101 → 7 labs
4G EPS Deep Dive
The LTE/EPC track — Attach, Bearers & CUPS, S1AP, plus GTP, Diameter & PFCP decode
Labs 02 → 102·103·104 + GTP/Diameter/PFCP → 9 labs
New to Telecom
The 3 free overviews (2G/3G · 4G · 5G), then UE basics, transport, tunnelling, SIP & identity
Labs 01 · 02 · 03 → fundamentals → 8 labs
5G SBA Deep Dive
The 5G Core service-based architecture — Registration & PDU Session, SBI/HTTP-2, slicing, SCP/BSF/NEF/NWDAF
Labs 105 · 106 → Registration · PDU Session → SBA core → 12 labs
IMS & VoLTE
Registration & Cx → the VoLTE call → supplementary services, end to end
Labs 107·108·109 → Cx · SIP/SDP/RTP · iFC/ISC → 11 labs
Charging & Security
Online charging (Gy/Nchf), offline CDR, CAMEL prepaid, key hierarchies, AKA & forensics CTF
Labs 110-117 → charging·policy·AKA·ciphering + security → 17 labs
5G-NR & O-RAN
The N2/NGAP control plane, the NR radio, and the O-RAN RIC (E2/A1)
Labs 118 · 119 · 120 → NGAP/N2 · E2 · A1 → 11 labs
Non-3GPP & Roaming
Wi-Fi Calling over IKEv2/IPsec (N3IWF, ePDG) and the N32 roaming security edge
Labs 121-124 → VoWiFi (N3IWF/ePDG) + N32 & 5G roaming → 12 labs
Full Stack Engineer
All generations, security, charging, OAM, and roaming
All 124 labs
All Labs
3 free labs included · Pro unlocks all 124

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  • First 3 labs
  • 5 tel-IQ queries per session
  • Live terminal output
  • PCAP downloads
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₵25
48 hours
  • Every lab unlocked, 48h
  • Live terminal + signalling
  • PCAP downloads
  • Progress tracking
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