This is a Linux-based system. The board we intend to use this on is a D/480JCT2T1, though single T1 boards would certainly come into play as well if we chose to make more instances. The latency figure I gave was based on an estimate regarding the size of the firmware buffer (fixed at 512 bytes in Linux), the driver buffer (a minimum of 1000 bytes). The PCM stream is 64000 bits (or 8000 bytes) per second, and 1512/8000 is equal to 0.189; 189 milliseconds.
Is this latency figure accurate?