Well it is quite straightforward, change the pinout from the old phone to what the ULF needs.

You'll have some wires left over, and you'll need to add a couple, but it's pretty easy.

I helped a guy in the Middle East do it last week.

Jochen

Read this:

BIT 2 with CKPH (GSM and WDCT networks)

The Siemens CKPH (cordless keypad handset) is connected via a WDCT antenna to the BIT 2. Data communication with the vehicle electrical system takes place via the I/K-bus interface. This enables operation via the on-board monitor, MID and multifunction steering wheel. Hands-free operation is effected by means of a microphone and the existing audio system, radio, DSP or double-coil speakers. Other audio sources are deactivated by the control unit during hands-free operation.

Reception and relaying of SMS messages is possible. These text displays can be read off in the CKPH1 and CKPH2 and in the on-board monitor and MID. A personal telephone directory can be stored on the SIM card.

Long-distance data or fax transmissions can also be effected with a separate connection.

Brief description of components
The Siemens telephone with CKPH (fixed mounting) consists of the following components:

•CKPH (cordless keypad handset)

•Eject box with card reader

•Basic Interface Telephone

•Hands-free microphone

•Double-coil speakers

•Antennas

CKPH (cordless keypad handset)
The cordless keypad handset replaces the handset previously supplied with a coiled cable. The cable connection to the eject box is omitted. Communication is conducted by radio and enables more freedom of movement. Calls can thus also be made and received in closer proximity to the vehicle (approx. 10 m).

The eject box is the basic and reception station for the CKPH. In the case of the tandem system option, the second CKPH is accommodated in a second eject box in the centre armrest at the rear. The handset can be stowed with the keypad facing upwards or downwards.

Data is transmitted between CKPH and BIT 2 via a WDCT antenna (Worldwide Digital Cordless Telephone antenna (2.46 GHz).

The cordless keypad handset is supplied by a storage battery. The battery is recharged by integrated charging electronics when its capacity drops below 1/3. However, the CKPH must be engaged in the eject box for this purpose. Charging starts only when terminal R is activated.

Important: A charging procedure lasting approx. 10 hours is initiated when the storage-battery compartment is opened. This formatting procedure results in an increased closed-circuit current.

Caution: Do not charge storage batteries externally!!

Eject box with card reader
The eject box serves to accommodate the telephone handset. It contains a voltage regulator and an SIM card reader and is located in the centre armrest.

The ISM band (Industrial Science Medical 2.46 GHz) is not authorised in all countries. WDCT operation can be deactivated and activated with a switch in the eject box. With one switch-off operation, the BIT2 control unit and the SBDH on the ISM band are deactivated (the WDCT switch is at ”0”).

With the WDCT switch at ”0”, the radio link to SBDH is not set up when terminal R is switched on again. The SBDH no longer functions. The telephone unit can only be used without the handset.

The power supply is provided by terminals 30 (+6V) and 31. Terminal 58g supplies the signal for illuminating the CKPH.

Basic Interface Telephone 2
The BIT 2 control unit contains the following components:

•I/K-bus interface

•Motor-vehicle interface (audio)

•Microprocessor, program and data memories

•GSM module

•WDCT basic station

•Voltage supply

Data communication with the vehicle electrical system is facilitated by the I/K-bus interface. It is thus possible to operate the phone using the multifunction steering wheel, on-board monitor or MID.

The WDCT basic station has a transmitter power of max. 10 mW and establishes the connection to the CKPH via the WDCT antenna. The transmitter power is modulated as required.

The BIT 2 control unit is located in the luggage compartment on the left.

If terminal R or 15 switches to ignition-lock position ”0”, the phone remains active for a certain run-on time. The run-on time (timer) can be set between 0 and 120 minutes in the phone menu on the handset (refer to Owner's Manual). 0 minutes is set as the standard value.

Hands-free microphone
Hands-free operation is effected by means of a microphone and the existing audio system, radio, DSP or double-coil speakers. Other audio sources are deactivated by the BIT 2 control unit during hands-free operation.

Communication is conducted in digital full-duplex transmission, i.e. NF is enabled for both call participants. It is possible to speak and listen simultaneously.

Double-coil speakers
Double-coil speakers are only fitted in conjunction with the hands-free facility. The audio coil is muted during an incoming/outgoing call. The second coil is used for conducting communication.

On cars without DSP , the BIT 2 control unit is connected directly to the double-coil speakers. On cars with DSP, the speakers are connected directly to the devices. The double-coil speakers are installed at front right and left.

Antennas
The BIT 2 control unit transmits and receives calls from the mobile-telephone network via the GSM antenna. The wideband antenna is designed for a frequency of 900 MHz and consists of two emitters.

Depending on the model, the GSM antenna is fitted at the following locations:

Model
Location

E38
Group antenna on outer skin of roof

E39
Window antenna

E39/2
Antenna on outer skin of roof

E46
Antenna on outer skin of roof

E46C
Antenna rod

E53
Antenna underneath rear spoiler




The WDCT antenna transmits the communication by radio to the CKPH. The installation location depends on the model and is set out as follows:

Model
Installation location

E38
underneath rear parcel shelf

E39
underneath rear parcel shelf

E39/2 (touring)
under left side trim panel

The 54-pin adapter plug is part number 84.12-0 308 375. I would build your custom wiring based on this.

I think that the caller voice output is line-level, because that would normally route through either the radio or AMP, depending on year and options of the car. I don't think that ever drives speakers directly.

__________________
SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input

Also appears to be available loose, but from Audi

4E0 972 144 54 pin multilock (Audi) £1.47
000-979-010 Pins for the connector £0.97 each

if Telephone appears in the nav menu then you have done sufficient wiring to make the TCU pair.

Of course, you must have the Bluetooth antenna connected!

Note that
1. The Bluetooth may be turned off in the TCU - what is the history of the TCU? Where did it come from? Has it ever been coded?

2. Not all phones see the BMW TCU via Bluetooth. Try another phone...

Bluetooth antenna is connected (brand new one)

Not sure of the history. Guess i'll be ordering navcoder and interface to find out.

I thought Bluetooth always came coded on, but VR needed turning on.

Cheers

Neil

Neil, Can you post the changes you needed to make to the connector? As in what colour goes to what pin?

Cheers,

- D

I have a 4/04 build TCU in my car. (its the one month part). I have a PK and my phone has seen the BT before, but I cannot pair. Cant seem to get any of the steeringwheel buttons to work for this either. Will navcoder 'release' the BT here or work for this at all or am I really SOL and need to buy a newer TCU? I have the BT antenna, and I have SOS.

__________________
For Sale Thread:
http://www.xoutpost.com/classifieds/...ia-bridge.html

2004 X5 3.0i - Sold
1998 328i Convertible (e36) -sold
2004 325xi (e46)- sold

Any questions?: DICE mediabridge|gauge rings|LED Angel Eyes|front door carrier|GT1/DIS/INPA/NCS|bluetooth retrofit|SIRIUS Retrofit|fuel filter|Dorman DISA|Roof Rack Delete|Sunroof drains|AC drains|rear sway bar swap|o2 sensors|VCG|Osram Night Breakers

Remove the TCU and see if you . have a pass code on it. If it does try to pair it with the phone