SAS Global Communications launches MOS testing service

London - SAS Global Communications, an international provider of managed and professional network services, has launched a mean opinion score (MOS) testing service to help customers, working with multiple vendors to deliver a converged network, ensure they have the interoperability essential within their infrastructure to support voice traffic and maintain quality of service (QoS) for calls.

According to SAS, the main reason convergence projects fail is because the voice path is not correctly configured to prioritise voice traffic across the entire network. In particular, this problem arises when companies have elected to work with multiple vendors for the supply of components such as WANs, LANs, phone systems and core switches.

“What we tend to see is that each supplier in the project will only warrant and test for operability up to their line of demarcation,” said Simon Cranford, CIO of SAS Global Communications. “Understandably, they don’t want to be responsible for third-party products or services but this frequently means that convergence projects go wrong.”
The main differentiator for SAS's MOS testing service is that it takes ownership of the complete voice path, including all suppliers involved within.

As part of the service, the company undertakes an initial assessment of the quality of speech that is available across every segment of the network, allowing it to identify inadequately configured devices and establish baseline statistics for monitoring the prioritisation of voice traffic.
Once this data has been reviewed, SAS's team of convergence engineers ensures that every device along the voice path is configured for optimal interoperability and traffic flow on the network.

Continuous monitoring, from the company’s UK-based network operating centre ensures that any moves, adds or changes that could negatively impact the quality of voice service are highlighted and notified to the customer immediately. SAS can also provide tracking and analysis of any historic events that affected network performance to prevent recurrence.

“We think we’re virtually unique in offering this service across the entire network, particularly since we offer it on a UK and international basis,” said Cranford. “Very few systems integrators take such a pivotal role in convergence projects; not only do they tend to focus on the LAN, most don’t work outside the UK either.”

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