Pilot Project Demonstrates Ability to Eliminate Outmoded Voice over TDM in the Navy WAN Without Requiring Replacement of Existing Phones or PBXs

During the Navy’s Trident Warrior ‘04 (TW04) exercise in October 2004, the Automated Digital Network System (ADNS) demonstrated the Navy’s ability to use Quintum’s Tenor VoIP switches to eliminate outmoded, inefficient time division multiplexing (TDM) voice network connections in favor of the converged transport of both voice and data communications over a more economical common IP-based satellite link. Thus, the Quintum Tenor VoIP MultiPath switching platform is an effective solution for implementing highly efficient secure ship-to-shore voice communications.

With the Tenor switching platform, unencrypted ship-to-shore VoIP calls required approximately 8.5 kbps of network bandwidth, versus 64 kbps per channel required under TDM. Use of a common network link for voice and data traffic also allowed the Navy to dynamically allocate additional available network bandwidth for data since voice utilization is typically less than 20%, so that data applications can benefit from increased bandwidth over 80% of the time. In addition, the Tenor-enabled VoIP connectivity can be used for secure telephone calls and fax transmission. Quintum provided the Navy with customized software to support its requirements for secure VoIP calls. The Tenor switches successfully supported encrypted STU-III calls over IP at 24 kbps gross bandwidth. Ship-to-shore VoIP trunking across low-bandwidth satellite links

Other benefits of using the Tenor VoIP platform include the capability to use multiple paths for IP traffic, which improved service availability from 53% to 90%, and provided consistently high call quality.

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