GF82.70-P-3107-02C

CTEL interface, function

The portable CTEL D2B interface (A59/1) is switched on or off via a discrete "Wake-Up" line. It reacts to the falling impulse edge (at rest state level is "high") and the duration of the "Wake-Up" signal. Generally after switching off the D2B, the D2B interface mobile phone (A59/1) remains active for a further 10 minutes, provided a switched-on mobile phone is in the cradle. Incoming control data from D2B is directed to the mobile phone via the portable CTEL D2B interface (A59/1) with the aid of discrete data lines; then as requested by the radio (A2) the

portable CTEL D2B interface (A59/1) switches the mobile phone on or off and relays the functions to be carried out (e.g. dial number). Inversely, the mobile phone data (voice of caller, control data, telephone numbers) is converted into an appropriate D2B format by the portable CTEL D2B interface (A59/1) and then directed to the radio (A2) for further processing. Charging mobile phone rechargeable battery The mobile phone rechargeable battery remains on charge as long as the portable CTEL D2B interface (A59/1) is activated via the D2B (regardless of whether the mobile phone is switched on or off).