Assertion: modem | /r/CapableOf | hear unexpected dial-tone
Facets:
value: on the line
type: LOCATION
Source sentences:
text: Other common out-of-band messages are notifications from the modem that data was lost because the computer is sending data either too slow or too fast, or that the modem hears an unexpected dial-tone on the line (meaning the caller probably hung up), or that the extension handset was picked up or hung up.