on-board modem

modem evaluation board

modem clocked modem adapter

board and board

board by board

board to board

board to board connector

board-to-board connector

on-board color alarm board

printed-circuit board(PCB)(PC board)

section for gangway board and diving board

3G wireless modem

acoustic coupler， auto-answer modem

acoustic modem

adaptive narrow-band FM modem

ADSL Modem

analog modem

answer-only modem

asynchronous modem