SAN MATEO, Calif. Nov.21, 2011 – VSS Monitoring, the world leader in Network Intelligence Optimization, today announced its participation in the MultiService Forum (MSF) Voice over LTE (VoLTE) Interoperability Event as the key monitoring vendor for lab testing at the Vodafone Test and Innovation Centre in Düsseldorf, Germany.

“To date, 4G has not been able to carry voice traffic, but that is all about to change,” said Andy Huckridge, director of marketing at VSS Monitoring. “With VoLTE as one significant proposal by GSMA to carry voice on 4G/LTE networks, we are honored to have been selected as the only monitoring vendor to help advance the event, technology and industry.”

In order to maximize the effectiveness of the lab test monitoring, VSS Monitoring provided its Distributed Traffic Capture System for traffic monitoring, and its Test Acceleration System for speeding up the lab testing. As the only monitoring equipment vendor to be invited to participate in the tests, VSS Monitoring provided a platform that captured traces of possible interoperability failures and inconsistencies to be reviewed after the event.

“We invited VSS Monitoring to participate due to its demonstrated support for the forward-moving development of VoLTE, validating the industry changing opportunity represented by the MSF VoLTE Interoperability Event,” said Kyu-Ouk Lee, president of MSF. “VSS Monitoring’s involvement played a critical role in monitoring, accelerating and optimizing the interoperability of VoLTE equipment, speeding the deployment of 4G Voice services.”

The MSF VoLTE Interoperability Event validates key network interfaces that support multi-vendor operator deployment strategies for LTE/EPC/IMS technologies by identifying factors limiting new equipment interoperability with commercially available equipment from the perspective of vendors and operators. Backed by GSMA, the test results demonstrated that the GSMA technical recommendations for providing end-to-end VoLTE were mature and interoperable, however specific issues were discovered that will be the focus of future work.