DIGITAL PHONE LINES


Telecommunications and Speech Data Collection

• The use of a digital interface to the phone network avoids the extra A/D conversion, thus preserving audio quality.

• The T1 line - 24 digital phone lines at 1.5 Mb/sec.

Existing Speech Data Collection Systems

• Intervoice - proprietary, unresponsive vendor, and PC based.

• Sun's XTL - proprietary, expensive, high overhead, and questionable portability.

Linkon FS4000 Communications Board

• Direct Driver Interface allowed for low level customizations for speech data collection needs.

• Object oriented software developed at ISIP adds portability