Assertion: modem | /r/CapableOf | crash call
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Source sentences:
text: The Courier modems remained a favorite in the BBS and emerging Internet service provider world, where they were known to run without problems for extended periods of time (although the initial large-scale deployment of Courier modems in the CompuServe network uncovered a serious bug, which would cause the modems to crash and stop answering calls under high call volumes).