FxTestEngine Overview
FxTestEngine is a comprehensive functional testing, load testing, and monitoring tool
designed for 3GPP-based 4G (LTE/EPC) and 5G Core & RAN network elements.
It enables telecom operators and developers to validate performance,
reliability, and compliance of core network elements.
FxTestEngine provides deep validation capabilities for each network function based on
3rd Generation Partnership Project (3GPP) standards,
ensuring protocol compliance, interoperability, and performance at scale.
Supported Network Functions
4G (LTE / EPC) Core Components
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CHF – Charging Function
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PCRF – Policy and Charging Rules Function
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PGW – Packet Gateway
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SGW – Serving Gateway
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MME – Mobility Management Entity
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HSS – Home Subscriber Server
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AAA – Authentication, Authorization, and Accounting
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4G-EIR – Equipment Identity Register (LTE)
5G Core (5GC) Network Functions
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UDM – Unified Data Management
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PCF – Policy Control Function
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NSSF – Network Slice Selection Function
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NRF – Network Repository Function
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AMF – Access and Mobility Management Function
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SMF – Session Management Function
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UPF – User Plane Function
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AUSF – Authentication Server Function
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5G-EIR – Equipment Identity Register (5G)
5G Access Network (RAN) & Interfaces
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AGF – Access Gateway Function (for wireline access integration)
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gNB-CU – Central Unit of 5G Base Station
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gNB-DU – Distributed Unit of 5G Base Station
Interfaces & Protocols Supported
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XnAP – Xn Application Protocol (gNB-to-gNB interface)
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E2AP – E2 Application Protocol (RAN Intelligent Controller interface)
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N26 – Interworking interface between LTE (MME) and 5G (AMF)
Comprehensive Coverage
FxTestEngine ensures:
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End-to-end validation across control plane and user plane
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Multi-interface interoperability testing
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Seamless testing of LTE–5G interworking scenarios
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Support for both standalone (SA) and non-standalone (NSA) deployments
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Compliance with 18+ 3GPP specifications
