Auto Answer

His French phone was on auto answer after one silent ring.

It can be found under the "Call settings" labeled as "Auto answer"

In much the same manner a cellphone can be configured for silence on ring and auto answer and hidden, frequently placed inside something that has power available to maintain the battery.

On an external modem the status of the Ring Indicator pin is often coupled to the "AA" (auto answer) light, which flashes if the RI signal has detected a ring.

The phone had 9 optional ringtones, an auto lock function, multikey answer (so you could answer with any key), a special emergency call option, an Auto Answer function (after two rings the phone would automatically answer itself), and several other features common on older Motorola phones.