IMS Core Network Emulator

Emulate IMS network nodes and generate realistic traffic between network devices, including VoLTE IMS, SMS.
IMS Core Network Emulator

Emulate IMS network nodes and generate realistic traffic between network devices, including VoLTE IMS, SMS.


The Valid8 IMS Core Network Emulator provides an all-in-one, cost-effective and ultra-portable IMS network for demonstration, testing and training purposes.

What It Can Do For You

Emulates all necessary IMS core nodes including P/I/S-CSCF, AS and 4G/5G nodes including HSS/UDM and PCRF, connecting on Cx/Dx,Rx, Gx,Gm, Mw, SGi interfaces.

Why It’s Different

  • Scalable software-based architecture can run on a range of hardware from COTS and high-end customer provided hardware to Virtual Machines and the Cloud (e.g. Amazon AWS) for maximum versatility and performance
  • Web-based UI is easy to learn
  • HTTP API enable integration with automation test systems and other equipment
  • Stateful modeling provides accurate emulation of network elements

Ordering INformation

  • Product Name: IMS Core Network Emulator
  • Product Code: ims-core-network-emulator

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  • Realistic network emulation handline 1,000s of devices and calls (scalable)
  • Emulates some or all of core network, exposing all internal interfaces
  • Emulators available per subsystem (CSCF Emulator, PCRF Emulator, etc.)
  • True stateful simulation
  • Signaling request/response messages for call handling, authentication, etc.
  • Report on media received, call connect time, call duration, jitter, packet loss
  • Generate valid and invalid/negative messages and call-scenarios (fully editable scenarios)
  • Supports sending invalid messages including malformed, dropped, and misordered packets
  • Check parameters in messages from SUT and flag errors
  • 3GPP-compliant interfaces
  • ‍Alerts and notifications
  • Connects to 4G or 5G network emulator


The Valid8 IMS Core Network Emulator is comprised of multiple subsystems that are available individually or in parallel, and are scalable to fit your needs. The individual emulators are controllable through their call controllers, and the traffic can be captured through use of a remote capture tool such as Wireshark.

  • P/I/S-CSCF
  • AS
  • HSS (optional)
  • PCRF (optional)
  • Registration Attempts
  • Registration Successes
  • Registration Failures
  • Call Attempts
  • Call Successes
  • Call Failures
  • Calls per second (CPS)
  • Call setup time
  • Call tear down time
  • Media Tx Packets (audio)
  • Media Rx Packets (audio)
Configurable Parameters
  • Call session length
  • Concurrent calls/endpoints

Automation API

User commands can be fully automated using REST API. This includes performing all test control functions as well as collecting results and metrics. It can be integrated into virtually any CI system via the HTTP API, including Jenkins, CircleCI, Gitlab and others.


The application’s subsystems can be edited directly in the browser using TDL or by using the graphical tools. The Message Workshop allows for creating of test scenarios directly from the hex stream of a remote capture, while the Graphical Editor (on the feature roadmap for 3Q 2020) will allow for creating customized call scenarios by dragging and dropping the call flow to meet your test needs.

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Use Cases

SIP Client Under Test

For testing the SIP Client, the Valid8 Tester can generate SIP calls to test performance and stability.

Supported Scenarios:
  • INVITE Audio/Video calls
IMS Core Network Emulator
IMS Core Network Emulator

Summary of Specifications

The Valid8 IMS Core Network Emulator is capable of simulating and testing several devices individually or in parallel and is scalable to fit your needs.


Protocol Specifications

  • IETF RFC2327
  • IETF RFC3261
  • IETF RFC3550
  • TS 23.003
  • TS 23.008
  • TS 24.167
  • TS 24.229
  • TS 29.228
  • TS 29.229
  • TS 29.328
  • TS 29.329

Product Details

  • IMS Core Network Emulator

Valid8 exports its products strictly in accordance with all US Export Control laws and regulations which shall apply to any purchase or order. Specifications are subject to change without notice.

500 West Cummings Park, Suite 6550 Woburn, MA 01801
p: +1-855-482-5438
f: +1-781-996-3708

Ordering Information

  • Product Name: IMS Core Network Emulator
  • Product Code: ims-core-network-emulator

Datasheet Page

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