Popcom
... that the external models of the Popcom modem have no status lights, instead providing feedback to the user through touch tones?
... that the external models of the <b id="mwA9g"><a href="./Popcom" id="mwA9k" rel="mw:WikiLink" title="Popcom">Popcom</a></b> modem have no status lights, instead providing feedback to the user through <a href="./Dual-tone_multi-frequency_signaling" id="mwA9o" rel="mw:WikiLink" title="Dual-tone multi-frequency signaling">touch tones</a>?