TDK Corporation

V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid

Teridian Semiconductor Corporation

CCITT V.22bis,V.23,V.22,V.21,Bell 212A Single-Chip Modem w/ Integrated Hybrid

Teridian Semiconductor Corporation

CCITT V.22bis,V.23,V.22,V.21,Bell 212A Single-Chip Modem w/ Integrated Hybrid

Teridian Semiconductor Corporation

CCITT V.22bis,V.23,V.22,V.21,Bell 212A Single-Chip Modem w/ Integrated Hybrid