Scenario automation
Build reusable, parameterized scenarios for registration, authentication, session management, charging and policy flows.
Telecom test automation platform
Release your core with confidence.
FxTestEngine gives network teams a clear, repeatable way to validate 5G and 4G core services—before subscribers ever feel an issue.
Request a demo →Explore platformBuilt for telecom engineers
$ scenario run 5g-sa-registration
↳ AMF discovery .............. PASS
↳ AUSF authentication ........ PASS
↳ UDM subscription data ...... PASS
↳ SMF PDU session ............ PASS
↳ policy control ............. PASS
82% complete● 41 assertions passed
VALIDATE THE NETWORK SERVICES THAT MATTER
5G SA Core4G / EPCDiameterHTTP/2PFCP
One platform. Every critical flow.
Turn complex protocols into reliable, repeatable tests.
From a single interface check to an end-to-end subscriber journey, FxTestEngine brings execution, observability and evidence into one focused workflow.
Deep protocol validation
Inspect signaling at message and attribute level. Catch broken sequences, missing AVPs and unexpected responses fast.
Actionable evidence
Give engineering and assurance teams clear run history, assertion results and exports ready for release decisions.
Complete core coverage
Test the interfaces your subscribers depend on.
Use a unified engine across 5G access and 4G packet-core functions. Design once, run consistently across labs, integration environments and pre-production.
✓ 5G access and mobility validation
✓ 4G / EPC session and bearer Testing
✓ Subscriber data, policy and charging flows
✓ NGAP, S1AP, Diameter, GTP and PFCP checks
NETWORK FUNCTION / INTERFACE COVERAGE
Network function
5G RAN
4G EPC
Diameter
AMF
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MME
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PGW / SGW
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HSS / PCRF
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gNB CU / DU
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Dedicated validation pages
Explore Testing by network function.
Each function has a dedicated assurance page focused on the interfaces, procedures and release risks that matter most.
A
AMF Testing →
Registration, mobility, security context and 5G access signalling.
M
MME Testing →
LTE attach, tracking area updates, bearer control and mobility.
P
PGW Testing →
PDN sessions, IP allocation, charging triggers and policy enforcement.
S
SGW Testing →
GTP session handling, user-plane continuity and roaming paths.
H
HSS Testing →
Subscriber data, authentication vectors and Diameter procedures.
P
PCRF Testing →
Policy rules, QoS decisions, charging control and Rx/Gx flows.
CU
gNB CU Testing →
F1 coordination, NGAP signalling and centralized RAN control.
DU
gNB DU Testing →
F1 procedures, radio resource control and distributed RAN delivery.
Designed for delivery teams
A faster path from change to assurance.
Replace fragmented scripts and manual trace reviews with a workflow made for network validation.
01
Model the journey
Select a ready-made flow or compose your own. Parameterize identities, APNs, DNNs and expected outcomes.
02
Run with control
Execute on demand or as part of your release pipeline, with controlled data and precise test configuration.
03
Decide with evidence
See what passed, what failed and exactly where. Share readable results with engineering, vendors and leadership.
5G SACore service validation
4G EPCLegacy and interop coverage
4+ protocolsAcross control plane Testing
1 viewFor every run and result
Bring clarity to every release
Ready to make core-network Testing predictable?
Talk with the FxTestEngine team about your test scope, network architecture and assurance goals.