IMS
The IP multimedia subsystem (IMS) is an industry reference architecture from the Third Generation Partnership Project (3GPP) that defines the common control and interoperability between existing wireline, wireless, and emerging IP-based communications networks. IMS standards define an all-IP-based wireless network built upon recognized IETF protocol specifications. The IMS architecture provides advantages to service providers and network equipment manufacturers (NEMs) by enabling faster creation and deployment of advanced applications and services, and by reducing capital expenditures and operational costs.
Ixia's IMS test solution offers the protocol breadth, stack depth, and traffic/signaling capacity required to stress and verify IMS network elements. Test cases and configurations can be constructed for any of the four primary IMS functional areas: access network, core network, interworking elements, and application servers. Key test scenarios include:
- Standard call generation
- Function test suite creation
- Negative testing
- Handover scenarios
- Load and capacity testing
- Application signaling and bearer traffic
Ixia's IxCatapult™ provides extensive protocol support to test all key IMS areas, including authentication, call session control, security, charging, and quality of service (QoS). The test solution offers complex lower-layer protocol analysis, essential for IMS testing. Perceptual evaluation of speech quality (PESQ) testing is provided for voice analysis. Ixia's multi-user, multi-protocol, multi-technology platform facilitates simultaneous testing of mobile users, application servers and their services, and the public switched telephone network (PSTN). IxCatapult also gives mobile operators and NEMs the tools necessary for high-performance load testing.
IxCatapult IMS test system protocols have been grouped in four bundles based on typical user configurations. Each bundle provides all the protocols needed to support functional and stress tests:
- Access Network: PDF, P-CSCF, and application servers simulation
- Core Network: P-CSCF, I-CSCF, and S-CSCF simulation
- Application Servers: applications server (SIP-AS, OSA-SCS, IM-SSF), HSS, and SLF simulation
- Interworking Elements: MGCF, BGCF, IM-MGW, and SGW simulation
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