See also:

Connecting headphones
You can connect headphones with a jack plug or operate them using the infrared interface. To enable optimal use of the infrared interface, use infrared headphones that comply with the IEC 61603 ...

DTMF suffix dialing
DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purp ...

Tire identification marks
Knowledge of the labeling on the side of the tire makes it easier to identify and choose the right tires. Tire size Speed code letter Q = up to 100 mph or 160 km/h T = up to 118 mph or 190 km/ ...