NEC CD-4C0TB C0 Trunk Loop / Ground Start Board Card

R72 ♻ NEC CO Trunk Loop/ Ground Start CD-4C0TB Card ♻

NEC SV9100 GCD-4COTB 4 Port Analog Trunk Card CD Trunk Loop / Ground Start

NEC CD-4C0TB / CD4C0TB (USED)

NEC PZ-4COTFH Loop/Ground Start Trunk Daughter Board

NEC SV8100 CD-4COTB TRUNK LOOP /GROUND START BOARD w/ PZ-4COTF DAUGHTER CARD

NEC CD-4C0TB CO Trunk Loop/Ground Start Triple Port Interface Module w/ PZ-4COTF

NEC CO Truck Loop/Ground Start GCD-4COTB