How about a cordless phone for SIEMENS?
After taking up the sub machine, press the button a green color, it is on the key, and then dial the number, after the call hang out according to the green color of the same key; if the mother directly picked up the microphone, hands-free or press the button, and then dial the number you can, after the call hang or microphone press the handfree key again.
The machine can pick up the number and then press the green key, the phone will automatically dial the number just dialed, hang up after the call, and then press the same green key;
