In addition to the bandwidth savings, the GDC APEX VSM continues to lead the industry with the most cost-effective VBR Voice over ATM solution on the market today, breaking through the $250 barrier per voice channel, and offering the application flexibility of both 32 Kbps ADPCM and 8 Kbps CS-ACELP compressed voice capabilities on the same voice platform.
The addition of the 8 Kbps CS-ACELP algorithm provides the industry's highest port density 8 Kbps VBR Voice over ATM product, with each GDC APEX system capable of supporting up to 1800 compressed voice channels.
729A recommendation for the CS-ACELP (Conjugate Structure Algebraic Code Excited Linear Prediction) algorithm is designed to provide a reduced complexity implementation, enabling high quality 8 Kbps voice compression.
The VSM 8 Kbps CS-ACELP option is currently in customer test and will be available this summer.
Taking advantage of this fully standards-based adaptation layer, the VSM supports up to 120 voice or data channels per module, utilizing voice compression at 32 Kbps ADPCM and now 8 Kbps CS-ACELP.