DSP: TMDS3200031 (Farnell 800-718-1997 52F8771), $91, purchased 1/6/98, PO 10698
Use Net186 module (with included TCP/IP software) for network interface and user interface (LCD, keyboard); use C31 for A/D and D/A, mu-law conversion, playout delay compensation, use dual-port SRAM to communicate between two (MCM67Q709 128K x 9 Bit); move to single-DSP solution later need microphone amplifier
Multi-line gateway with DAAs and codec chips (National TP3020) and serial-to-parallel conversion and integration with ISA
need a SLIC that handles BORSCHT, without requiring 48V battery