The interactive 4G LTE & 5G Core
learning platform built for telecom engineers.
Stop reading 3GPP specs in a vacuum. training.mof-eng.com animates every procedure from UE power-on to Internet connectivity — message by message, parameter by parameter — with network-slicing simulators, QoS visualizations, fault injection, an integrated LMS, and an AI telecom assistant.
From "what is AMF" to "I can troubleshoot a Registration Reject" — fast.
Three layers, one journey. Each layer reinforces the next so concepts stick.
① Watch the procedure
Open any procedure — 5G Registration, PDU Session Establishment, an Xn handover — and watch the animated call flow play out across UE, gNB, AMF, SMF, UPF and beyond.
② Inspect every message
Click a message to see its protocol (NAS, NGAP, PFCP, HTTP/2 SBI, GTP-U, Diameter, SIP), parameters, presence rules, and the exact 3GPP spec reference.
③ Simulate & break things
Run a slicing scenario, change subscriber counts, inject an AUSF or UPF failure, and see how the network degrades — with the root-cause path highlighted.
16 modules covering identity to Internet connectivity.
From authentication to fault simulation, slicing to certifications — a single platform that replaces a stack of disconnected tools.
Authentication & profiles
Email, Google, Microsoft and LinkedIn login with MFA. Per-user experience level, organization, certifications.
Subscriptions & billing
Free / Professional / Enterprise plans. Stripe + PayPal, coupons, trial period, invoices, auto-renew.
Telecom knowledge base
LTE, 5G and IMS categories with searchable procedure library and 3GPP cross-references.
Interactive call flow engine
UE → gNB → AMF → SMF → UPF lanes with animated messages, click-to-inspect, and play / pause / step controls.
Procedure library
5G Registration, PDU Session Establishment, Service Request, Mobility Update, Xn/N2/Inter-RAT handovers, and more.
Network architecture
Clickable network functions: responsibilities, interfaces (N1, N2, N8, N12, N22…), KPIs and failure modes.
Network slicing simulator
eMBB, URLLC and mMTC. UE → AMF → NSSF → SMF selection flow with live resource allocation visualization.
QoS & bearer management
LTE default and dedicated bearers, 5G QoS flows — QFI, 5QI, ARP, GBR, MBR shown end-to-end.
Internet access simulator
The full packet journey: UE → gNB → UPF → Internet with IP allocation, NAT, DNS and routing visualized.
Resource simulator
Tweak subscribers, throughput, sessions — watch AMF / SMF / UPF load recompute in real time.
Fault simulator
Take down an AUSF, NSSF or UPF. See impact on procedures and walk the root-cause analysis.
Learning Management System
Courses, lessons, embedded procedures, videos and PDFs. Track progress per learner.
Step through the full 5G Initial Registration — 21 messages, six network functions.
No signup. No download. Open it in your browser and click any message to see what it carries.
Where we are, and where we're going.
Quick answers.
Who is this for?
Telecom engineers, students, network operators, vendor teams, university lecturers and certification candidates studying LTE, 5G Core or IMS procedures.
Is there a free plan?
Yes. The Free plan includes a curated set of diagrams and call flows. The Professional plan adds the full procedure library, simulators and downloads. See pricing →
Do I need to install anything?
No. The platform runs entirely in your browser. The interactive demo on this site is a working preview of the call flow engine.
Does it cover real protocols?
Yes. Every message is tagged with its protocol (NAS, NGAP, PFCP, HTTP/2 SBI, GTP-U, Diameter, SIP) and references the relevant 3GPP specification.
Can my team get analytics and SSO?
Yes — the Enterprise plan adds team accounts, analytics, custom training, API access and SSO. Contact us for a tailored quote.
When does it launch?
We're in the architecture phase right now and building toward an MVP launch with the foundation modules. Sign up for early access to get a heads-up.
Be the first to use it.
Early-access subscribers get a discounted Professional plan for life when we launch.