Network Emulator Software offers optimized EVS codec option.

Press Release Summary:

Designed to emulate P-CSCF and IMS core network, E6966B IMS-SIP Network Emulator Software supports 3GPP Enhanced Voice Services (EVS) codec. EVS E6966B-5TP option includes all bit rates from 9.6–125 kbps, as well as fixed rate. Rate change modes such as priority, peer requested, and stress enable user to change bit rate automatically every 20 ms. Software can be integrated with E7515A UXM wireless test set to emulate entire IMS/VoLTE environment for end-to-end IMS/VoLTE test.

Original Press Release:

Keysight Technologies Adds Enhanced Voice Services Codec to IMS-SIP Network Emulator Software

Includes Ultra-High Bandwidth Audio, New Flexibility and Control, Improved Efficiency and Voice Quality


Keysight’s E6966B-5TP enhanced voice services (EVS) codec option allows network operators, mobile device manufacturers and designers to fully test their EVS implementation

Keysight’s UXM wireless test set enhancements include more IMS/VoLTE controls in its LTE/LTE-A test application software

SANTA ROSA, Calif., – Keysight Technologies, Inc. (NYSE: KEYS) today announced support for the new 3GPP Enhanced Voice Services (EVS) codec with the Keysight E6966B IMS-SIP network emulator software. In addition, Keysight also has enhanced its UXM wireless test set with more IMS/VoLTE controls in its LTE/LTE-A test application software. This includes front panel user interface configuration of 1) traffic flow template (TFT); 2) dedicated bearer setup; and 3) end-to-end VoLTE testing with two UEs connected to a single UXM.

“The enhancements to the Keysight VoLTE test solution further simplify user-experience while expanding capabilities to ensure designs meet optimal key performance criteria well before they go to market,” said Satish Dhanasekaran, general manager of Keysight’s Wireless Devices and Operator Segment.

Keysight has updated the E6966B software, which emulates the P-CSCF and IMS core network, with many new features, including the new EVS option E6966B-5TP.

The Keysight EVS E6966B-5TP option includes:

  • All bit rates from narrowband 9.6kbit/s to super-wideband 128kbit/s, as well as fixed rate

  • Rate change modes such as priority, peer requested and stress, which enables the user to change the bit rate automatically every 20ms

  • Primary mode and AMR-WB IO compatibility mode

The E6966B IMS-SIP network emulator software includes the client and server, enabling the user to test either in a PC-only soft client configuration, or integrated with the Keysight E7515A UXM wireless test set to emulate the entire IMS/VoLTE environment for end-to-end IMS/VoLTE test.

Complementing the UXM wireless test set and E6966B IMS-SIP network emulator software, the Keysight U8903B performance audio analyzer provides pre-configured perceptual evaluation of speech quality (PESQ) and perceptual objective listening quality assessment (PoLQA) audio measurement analysis to complete the voice quality test solution.

More information about Keysight’s E6966B IMS-SIP network emulator software and UXM wireless test set is available at and Videos demonstrating the UXM’s versatile capabilities are available on YouTube. Contact Keysight at for E7515A UXM pricing and delivery information.

About Keysight in Wireless

From WLAN to LTE-Advanced to the new 5G technologies, Keysight is focused on tackling the toughest design and test problems in the industry with the broadest range of solutions. With the most advanced electronic measurement solutions consisting of powerful software tied to both benchtop and modular hardware, engineers are able to get greater insight into design and test from simulation to R&D, from validation to manufacturing, from conformance to deployment. With experienced engineers in significant roles in cellular and WLAN standards groups and hundreds of application engineers all over the world, Keysight expertise is there to solve customer problems. Additional information is available at and A knowledge library of application notes, CDs and more is available at

About Keysight Technologies

Keysight Technologies (NYSE: KEYS) is a global electronic measurement technology and market leader helping to transform its customers’ measurement experience through innovations in wireless, modular, and software solutions. Keysight’s electronic measurement instruments, systems, software and services are used in the design, development, manufacture, installation, deployment and operation of electronic equipment. The business had revenues of $2.9 billion in fiscal year 2015. Information about Keysight is available at

Additional information about Keysight Technologies is available in the newsroom at


Janet Smith, Americas

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Twitter: @KeysightJSmith

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