Live · 50,000+ engineers · 3GPP Rel-18 ready
Telecom mastery · 40+ tools · 10+ labs · 8 books · 5 vendor tracks · 30+ technical guides

Master 5G NR
engineering — without the fluff.

CafeTele is the #1 platform for 5G NR, O-RAN, NTN, PDCP, 5G Core, LTE and AI-for-telecom training. Ship production networks with 10+ browser-based 5G labs, 40+ free calculators, 8 deep-dive engineering books and Ericsson, Nokia, Samsung, Huawei & Cisco vendor masterclasses.

For RF Engineers · RAN Engineers · Core Engineers · PHY Algorithm Engineers · Network Planning · Drive-Test & KPI Specialists · Students & Telecom Trainers

Flagship5G NR PHY → New · 30% offPDCP 5G NR → Explore labs

Free tools
40+Free tools
Live labs
10+Live labs
Deep-dive books
8Deep-dive books
Vendor tracks
5Vendor tracks
5G NR 6G NTN Wi-Fi 7
★ What is CafeTele

The platform where telecom engineers actually level up

CafeTele turns dense 3GPP specifications into job-ready skill. Cinematic video courses, hands-on browser labs, deep-dive books and 100+ engineer tools for 5G NR, O-RAN, NTN, 5G Core and 6G — built by a field engineer, for field engineers. No fluff, no classroom theory.

Learn

Cinematic, 3GPP-accurate video courses on 5G, O-RAN, NTN & 6G.

68 courses →

Practice

10+ real 5G labs that run in your browser — no VMs, no setup.

Open a lab →

Reference

8 deep-dive books & 100+ free engineer tools you'll use this week.

Browse tools →

Specialize

Vendor tracks (Ericsson, Huawei, Nokia) & role-based learning paths.

Vendor tracks →

How we train you — 100% online, learn anywhere

Study at your own pace, join live sessions, and prove your skills with hands-on labs and certificates — all from your browser, on any device.

Self-paced video

Cinematic, narration-synced lessons you can watch anytime, replay and download notes.

Live online classes

Join live cohort sessions and Q&A with the instructor — no travel, fully remote.

Hands-on browser labs

Spin up a real 5G core, RAN or O-RAN lab in your browser — build, break and learn.

Shareable certificates

Earn a verifiable certificate on completion to showcase on LinkedIn and your CV.

100% online · learn on any device, anywhere
★ Future-network training

Get ahead in 6G, O-RAN & NTN — before everyone else

Cinematic, 3GPP-accurate video courses on the technologies defining the next decade of telecom. Built by a field engineer — every information element explained, every diagram drawn from scratch, every lesson synced to narration.

New · 20266G

6G Course — 3GPP Release 20

Be first into 6G. The Release-20 architecture, new spectrum and AI-native air interface — for engineers who want a head start.

  • ITU IMT-2030 & the six 6G use cases
  • FR3 (7–24 GHz) & sub-THz spectrum
  • AI-native air interface, ISAC & NTN
₹499 / $6Start course →
BestsellerO-RAN

O-RAN Architecture Course

Master Open RAN end to end: the disaggregated O-RU / O-DU / O-CU split, the RIC, and how xApps and rApps optimise live networks.

  • 24 cinematic lessons · WG1 OAD-aligned
  • Near-RT & Non-RT RIC · E2 / A1 / O1
  • Open Fronthaul 7.2x & O-Cloud
₹1,259 / $20Start course →
Launch offerNTN

NTN — Satellite 5G Training

The complete Non-Terrestrial Networks course: 3GPP NTN (Rel-17/18/19), LEO/MEO/GEO orbits, Doppler & timing, and direct-to-device.

  • 22 episodes · 3GPP NR-NTN & IoT-NTN
  • LEO/MEO/GEO · Doppler & timing advance
  • Direct-to-device & satellite link budget
₹499 / $6.99Start course →
Browse all 68 courses →
For every kind of telecom engineer

Who is this for?

Pick the track that matches what you do every day. Each path bundles courses, labs and the exact tools your team uses in production.

Flagship

6G & Future Networks

Lead the next wave. 3GPP Release 20 study TRs decoded — IMT-2030, ISAC sensing, RIS, AI-native RAN, NTN orbital mechanics & quantum-safe security.

20 lessons3h 27m3GPP Rel-20Certificate
Open the 6G track

RF Engineer

Link budgets, antenna planning, drive-test forensics, RACH/PRACH tuning, coverage holes — all the math, none of the fluff.

14 courses5G + LTE
RF tracks

RAN Optimization

KPI hunting, neighbor planning, PCI conflicts, accessibility, retainability — turn red dashboards green this week.

22 tools9 courses
Optimization track

5G Core Engineer

SBA architecture, NRF discovery, AMF/SMF/UPF call flows, slicing, charging — everything from PDU sessions to packet captures.

11 courses2 sandboxes
Core track

Interview Prep

500+ scenario questions, real DT logs to debug, signaling-flow whiteboarding — walk in confident, walk out hired.

500+ Q&AMock drills
Interview track

AI / ML for Telecom

Anomaly detection, traffic prediction, log-mining LLMs, AIOps for RAN — the new senior-engineer skillset.

7 coursesReal datasets
AI/ML track
Deep-dive engineering books

8 books. 15,000+ pages.
Written by field engineers.

From 22-chapter O-RAN architecture masterclasses to 32-chapter 5G RAN optimization playbooks. Real counters. Real KPIs. Real solutions to real network problems.

8Books
140+Chapters
15KPages
Browse all books → O-RAN free preview
📘

O-RAN Masterclass

22 chapters · RAN + RIC architecture
📗

5G NR Physical Layer Handbook

14 chapters · Down-the-stack
📙

5G RAN Optimization Guide

32 chapters · 306 NR counters · ₹999
Hands-on browser labs
10+ browser-based 5G labs · O-RAN · NTN · 5G Core

5G labs in your browser. No VMs.
Just open and break things.

10+ interactive 5G labs covering 5G NR PHY, O-RAN xApps, NTN orbital mechanics, 5G Core SBA flows, IMS registration. Trace AMF registration, decode SIB1, tune O-RAN xApps, watch packets fly through SBA. Coffee-break sized, zero setup.

10+Live labs
0VMs needed
3minTo first run
Explore all labs → Try 5G Core SBA lab
☁

5G Core SBA Lab

AMF · SMF · UPF · live traces
📡

5G PHY Layer Lab

SIB · MIB · SSB · resource grid
🛡

5G Security Lab

SUCI · SUPI · auth flows
Vendor masterclasses

Ericsson. Huawei. Nokia.
Read the counters like a native.

21,000+ lines of vendor docs digested. Every PM counter, every MML command, every alarm decoded. Made for the engineer who debugs at 3 AM.

3Vendors
800+Counters
21KLines decoded
Vendor masterclasses →
E

Ericsson 5G

21K lines · K-GET · DCGM analyzer
H

Huawei 5G + IMS

EPC · IMS · LTE · 5G counters
N

Nokia 5G Optimizer

SRAN · VoNR · slicing · energy
Free engineering tools

100+ tools you'll actually use this week.

ARFCN converter. Link-budget calculator. PRACH planner. SSB beam-pattern designer. Throughput estimator. Most are 100% free, no signup.

100+Free tools
0Signup needed
Open the tools shelf →
📊

ARFCN Converter

NR · LTE · UMTS · GSM
📡

Link Budget Calculator

Path loss · MAPL · cell radius
⚡

PRACH Planner

Format · ROOT · ZeroCorr
Premium training · up to 60% off

Ship-grade courses. From the field, not a classroom.

Self-paced, lifetime-access training built from real 5G deployments — parameter-level, counter-level, decision-tree RCA. Buy once, learn forever.

🔥 Bestseller
Vendor-neutral · 5G RAN

5G RAN Optimization Guide

The vendor-neutral reference every RAN engineer keeps open on the second monitor. 32 chapters, 6 appendices, every KPI traced to a root cause.

  • 306 NR counters mapped to 20 domain KPIs
  • 12-domain counter intelligence command centre
  • EN-DC · NSA · SA · VoNR · Slicing
  • Lifetime updates · free preview (Ch 1–3)
⭐ 4.9 · engineer-authored · 32 ch + 6 app
₹2,499 ₹999
Buy now →
⭐ Flagship
Nokia SRAN · VoNR · Slicing

Nokia 5G Optimizer

The complete Nokia 5G mastery course — 13 modules, 280+ parameters walked, VoNR end-to-end, network slicing lab, energy-saving features, and a 27-step commissioning walkthrough.

  • 13 sections · 100+ KPIs · 200+ counters · 280+ params
  • VoNR (50 params) · Slicing · Energy (35 params)
  • 27-step xCLI commissioning + 10-category guide
  • 5 counter flows · 25+ Canvas charts · Sankey + Heatmap
⭐ 4.8 · version-agnostic · 71 features breakdown
₹4,999 ₹1,999
Enrol →
✦ Free for now
JNCIA · JNCIS · Juniper

Juniper L2 Switching Masterclass

17-module exam-aligned course for JNCIA-Junos (JN0-105) + JNCIS-ENT (JN0-351). 170 practice questions, CLI simulator, war stories, and a Cisco↔Junos translator.

  • 17 modules · exam-aligned to JN0-105 + JN0-351
  • 170 practice Qs · 10× 50-Q test series
  • CLI simulator · Cert tracker · SRS review
  • Free for a limited window — grab it now
⭐ 4.9 · exam-laser-focused · 10 full test series
$49 USDFREE
Start free →

🛡 14-day refund if a course doesn't 10× a $2,000 classroom session.  ·  Lifetime access  ·  Questions? Talk to us

Trusted by 50,000+ telecom engineers

What field engineers say

★★★★★
"Finally — a 5G platform built by people who've actually pulled all-nighters during a UPF migration. The Optimization book saved me weeks of trial and error."
RK
Rajeev K.
RAN Optimization Engineer · India
★★★★★
"The browser labs are unreal. I tested AMF registration flows on a coffee break — no VM, no setup, just learn. Worth every rupee of the premium tier."
PS
Priya S.
5G Core Architect
★★★★★
"Cleared my Nokia 5G optimizer interview using their question bank + Huawei MML parser tool. CafeTele is the only telecom site I've actually paid for."
MK
Marcus K.
RF Engineer · MEA region

Stop reading marketing 5G content. Start engineering.

Free signup. Free first courses. 100+ tools you'll use this week. Premium when you want to go pro.

🚀 Start Free Account Browse all courses

Browse the full CafeTele catalog — every course, handbook, and engineering tool we've shipped

★ Featured Courses

★ FLAGSHIP · NEW · 2 FREE LESSONS
AI Fundamentals — Neuron to Transformer
19 lessons · 1h 30m · ₹399 / $4.99 · narrated animations
FLAGSHIP · NEW
5G NR Physical Layer · Advanced
99 lessons · TS 38.211–215 · cinematic animations
NEW
6G Core & RAN · Release 20
Future-network architecture · AI-native PHY
5G FUNDAMENTALS
5G Training Course · 53 lessons
Network architecture · L1–L3 · scenarios
5G L1
5G Initial Access · Cell Search
PSS · SSS · MIB · SIB1 · RACH procedure
4G LTE
Huawei 4G LTE Optimization Course
RACH · VoLTE · MME pool · vendor-aligned
AI
LLM Engineering Course
Prompt design · RAG · agentic systems
AI/ML
AI/ML Foundations
From neural nets to transformers
SEE ALL
Browse All Courses →
Full catalog · 5G · 6G · LTE · AI

📘 Engineering Books

5G NR PHY Handbook 14 chapters · 196pp 5G Core Network 18 chapters · 33 modules O-RAN Masterclass 22 chapters · 7-2x split 5G RAN Optimization KPIs · drive test · counters AI for Telecom 16 chapters · ML/PHY Backhaul Planning microwave · fibre · capacity RF Planning Handbook link budget · propagation LTE → 5G Migration EN-DC · NSA · SA

🛠 Engineering Tools & Apps

CellScope Pro RF planning · 23 prop models 40+ Free Tools calculators · planners · converters UE ProScope UE log analysis Telescope Pro drive-test analytics Nokia 5G Optimizer KPI parser · MML Samsung 5G Optimizer cell tuning TransportPlan Pro backhaul capacity KML Converter site coords · CSV→KML Quiz Arena interview prep Hands-on Labs 5G · LTE · O-RAN · AIML All Tools → 5G Tools Suite ARFCN · link budget · more

🔬 Hands-on Labs

5G Core Lab 5G PHY Layer Lab 5G Security Lab AI/ML Lab Juniper L2 Switching O-RAN Lab All Browser Labs → ⚡ Architecture Builder · auto-connect · FREE Architecture Explorer →

🔍 Top Topics

5G NR PHY PDSCH PUSCH PRACH LDPC QCL BWP HARQ MIMO SSB DMRS CSI-RS numerology FR2 mmWave URLLC TS 38.211 TS 38.212 3GPP Rel-18