GF82.70-P-3107-02P Telephone Interface, Function

GF82.70-P-3107-02P Telephone Interface, Function
- with CODE (854) MB portable CTEL

The CTEL interface (A34/4) is switched on and off via a discrete wake-up line.It responds to the negative edge of the pulse (in rest state the level is at "high") and the duration of the "wake-up" signal.

Generally, the CTEL interface (A34/4) remains active for another 10 minutes after the D2B ring is switched off, when a switched on portable cellular telephone is inserted in the mount.

Control data coming from the D2B ring are transmitted to the portable cellular telephone via the CTEL interface (A34/4) with the aid of discrete data lines; thereby the CTEL interface (A34/4) switches the portable cellular telephone on and off by the request of the head unit (radio or COMAND) and transmits the functions to be performed (e.g. dialing number). On the other hand the data for the portable cellular telephone (voice of caller, control data, telephone number) is transferred in a corresponding D2B format by the CTEL interface (A34/4) and transmitted to the head unit (radio or COMAND) for further processing.

Loading rechargeable battery for portable cellular telephone
The rechargeable battery in the portable cellular telephone is charged as long as the CTEL interface (A34/4) is activated via the D2B ring (regardless of whether the portable cellular telephone is switched on or off).