GF82.70-P-2005B Telephone Switch-On/Off Characteristics (D-Network), Function

GF82.70-P-2005B Telephone Switch-on/Off Characteristics (D-Network), Function
- with CODE (853) MB standard telephone
- with CODE (854) MB portable CTEL

General
The status of the telephone in the D2B ring depends exclusively on the status of circuit 15 (ignition ON/OFF). Information on the state of "circuit 15" is sent over the D2B ring to the telephone transmitter/ receiver, D2B (A35/13), the telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) from the radio (A2) or the COMAND operating, display and control unit (A40/3) (except model 129). The telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) do not have any electrical connection to "circuit 15" and they are switched on or off by a Head Unit command, via the D2B ring or an external wake-up line.

For "circuit 15 OFF" the telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) and thus the telephone or the telephone interface (A34/4) is switched on with the portable CTEL for a run-on time of = 10min. to t = 60 min. (run-on time is parameterizable) and it is then switched off again.

System characteristics
The telephone control unit for the telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) have 3 operating conditions.
- Powerdown mode
The telephone control unit is switched off with the exception of the external wake-up line.
- Idle mode or run-on time mode
The remaining components of the D2B ring are switched off; only the telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) is active during the run-on time, after the D2B ring "circuit 15 OFF" has been switched off. During the run-on time the telephone can be used without any PIN inquiry.
- Active mode
The telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4), and the remaining components in the D2B ring are active and available to the user.

Switch-on process
1st state: "Circuit 15 ON", telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) is in inactive state (Powerdown mode), the telephone system is not operational.

The telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) is activated (Active mode) when:
- the portable CTEL (A34/6) or the telephone handset (A34) is switched on.
- a call is made or received with the telephone switched on.
- a wake-up signal from another D2B ring subscriber is recognized via the external wake-up line.

2nd state: "circuit 15 OFF", telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) are in the run-on phase (Idle mode). The telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) is activated (Active mode) when:
- a call is made or received with the telephone switched on.
- a wake-up signal from another D2B ring subscriber is recognized via the external wake-up line.

Switch-off procedure
The telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) is in the run-on phase (Idle mode) and the D2B ring is switched off.

The following cases are possible:
- For "circuit 15 ON" and expiry of the run-on time of t = 10 min. to t = 60 min. (run-on time is parameterizable) and no further presses of a button on the telephone during the run- on time the telephone transmitter/receiver D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) is switched off (Powerdown mode). In doing so the state of the telephone is not altered, in other words, an active telephone remains switched on and is not switched off by the telephone transmitter/receiver, D2B (A35/13), or telephone transmitter / receiver (A35) (for model 163).
- For "circuit 15 OFF" and expiry of the run-on time and no further presses of a button on the telephone during the run-on time the telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) or the telephone interface (A34/4) is switched off (Powerdown mode). In this case, the status of the telephone changes, meaning, a switched on telephone is switched off.

When the D2B ring is deactivated, the telephone transmitter/receiver, D2B (A35/13), telephone transmitter / receiver (A35) (for model 163) is switched off, if neither the telephone is switched on nor the receiver is on the cradle.