Psytechnics Unveils Unique Performance Report on Microsoft's Voice Communications Technology

The principal conclusions of the study were:
  1. Overall, the one-way listening speech quality provided by the combination of Microsoft’s client and USB handset was consistently better than that provided by Cisco’s IP phones and Call Manager, whether using G.711 or G.729.
  2. More detailed analysis showed that the mean transmission bandwidth of the Microsoft solution typically fell between 24kbps and 80kbps, which are the bit-rates of the Cisco solution with G.711 and G.729 operation respectively. The peak bandwidth of the Microsoft solution was 100kbps for some IP conditions.
  3. In general, the maximum recommended value for round-trip delay is approximately 400ms, i.e. a one-way delay of 200ms. The delays observed for both Clients with low IP impairment conditions are within, or close to, this budget, although it should be noted that control of the delay budget within VoIP networks remains essential.

    A Leader in Voice Quality Assessment Solutions conducts Microsoft VoIP product evaluation.

    Psytechnics have evaluated the speech quality performance of Microsoft’s Office Communicator 2007 client using prototype USB handsets and Cisco 7961 IP phones with version 5.0 of the Cisco Call Manager. This document reports work conducted by Psytechnics on behalf of Microsoft.

    View Article



Comments

  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Despite the popularity of cloud software, many companies are reluctant to move their contact centers to the cloud. This white paper breaks down cloud architecture, the benefits of cloud and the difference between cloud and on-premise systems. It's a helpful resource for companies who are curious about cloud contact center software but have reservations. It offers practical explanations, extensive research and a guide to selecting the right cloud contact center vendor.

  • Speed. Agility. Flexibility. There are the big drivers behind most organizations' move to the cloud for their test/dev environments. Freed from the shackles of physical, on-premises infrastructures means test/dev teams can be incredibly fast, both in standing up and tearing down test beds. They can manage version control and they can share work between teams faster ever than below. Read this white paper to learn how your business can respond faster to the rapidly changing needs of customers with a cloud-based …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date