Cell phone system (before MY 2009) (Discovery 3)

Location of cell phone system components

Item name	Spare part number	Description
1	-	Microphone
2	-	Transceiver (TM)
3	-	cell phone antenna
4	-	Base plate adapter
5	-	adapter holder
6	-	speaker
7	-	Movable contact group
8	-	Steering wheel switches
9	-	Amplifier
10	-	IHU
11	-	Speakers

The cell phone system includes:

Transceiver (TM)
Base plate adapter
Phone holder
Microphone
cell phone antenna

The phone system on this vehicle allows the driver to mount their cell phone to the vehicle and use it hands-free. For this, a holder is used, unique for each brand of phone. The phone holder, in turn, is installed in a standard adapter, which is connected to the transceiver. The transceiver is connected to the MOST LAN, through which it communicates with the rest of the system For more information, refer to Communications Network (418-00 Module Communications Network)

Transceiver module

Transceiver module (TM) located on the right rear of the luggage compartment. The TM module serves as an interface between the telephone and the integrated audio headunit (IHU) The moduleTM also includes hardware and software for the voice command recognition system.

Contacts of connector C2777 of the transceiver

contact no	Description	Input signal / output signal
1-15	normally closed	-
16	Ignition	Input signal
17	Battery voltage	Input signal
18	Battery voltage	Input signal
19-32	normally closed	-
33	Weight	-
34	Weight	-
35	normally closed	-
36	normally closed	-
37	(+) cell phone speaker	Output signal
38	(-) cell phone speaker	-
39	(+) cell phone microphone	Input signal
40	(-) cell phone microphone	-
41	Ring tone (not for Nokia phones)	Input signal
42	Ring tone (for Nokia phones)	Input signal
43	normally closed	-
44	Talk start button on the steering wheel	Input signal
45	Receiving / transmitting a telephone signal	Input signal / output signal
46	«Weight» shielding	-
47	(+) serial communication (F Nokia bus)	Output signal
48	(-) serial communication (F Nokia bus)	-
49	(+) serial data reception (F Nokia bus)	Input signal
50	(-) serial data reception (F Nokia bus)	-
51	Phone holder identification signal	Input signal
52	phone holder supply voltage	Input signal
53	"Weight" phone charging	-
54	Battery charging voltage	Output signal

Microphone

The same microphone is used when talking on the phone «Hands Free» (free hands) and in the voice command recognition system. The microphone has a built-in noise suppressor for hands-free phone operation. The microphone has a standard directivity and is mounted on the roof console.

Cell phone antenna

The cell phone antenna is located in a fairing mounted on the roof and is connected to the TM module by a single coaxial cable. For more information refer to Antenna (415-02 Antenna)

Phone adapter holder

The cellular phone system allows the use of phones of different models and manufacturers. This is achieved by using a holder that is suitable for a particular phone. The holders have design differences depending on the cell phone model.