navigation system AUDI A6 2005 C5 / 2.G Electrics System Training Manual

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Available telephone systems
Two different telephone systems are available
ex-works for the new Audi A6 ´05.
Firstly, there is the fixed system with Bluetooth
operator handset, with which you may be familiar
from the current Audi A8 ´03, but which can only be
ordered with the High version of the MMI. Secondly, there is the newly developed mobile
baseplate. This mobile baseplate has a similar
control unit architecture and functionality to the
system used in the Audi A3 ´04.
However, it has now been incorporated into the
MOST bus for Infotainment.
Infotainment
1 Telephone transmitter and receiver R36
2 Telephone holder R126
3 Control unit for information J523
4 Microphone R140
5 Control unit for digital sound package J525
Basic or BOSE sound system
6 Data bus diagnosis interface J533 7 Control unit in dash panel insert J285
8 Control unit for steering column electronics J527
9 Control unit for multi-function steering
wheel J453
10 Mobile phone amplifier (compensator) R86
11 Antenna for GPS navigation R50
12 Bluetooth antenna R152
Reference
For information on the telephone system,
please refer to the SSP 293,
Audi A8 ´03 – Infotainment
326_070 11 10212
41
5
367
8
9

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The telephone transmitter and receiver R36 is fitted
as standard with a Bluetooth module.
In principle, the Bluetooth functionality
is always available, even if a mobile phone holder is
not connected. For reasons of electromagnetic
compatibility, Bluetooth is only active at present
when the mobile phone is inserted into the relevant
holder. The phonebook stored on the mobile phone
SIM card is read into the memory of the Telephone
transmitter and receiver R36 whenever the mobile
phone is inserted. Mobile-internal phonebooks
cannot be read in because the data formats differ
from model to model. The mobile baseplate is operated via the MMI in the
"TEL" menu. The telephone holder R126, which is
required for whichever type of mobile phone is to be
used, is available from the Parts Service. As you may
already know from the introduction of the new
mobile baseplate in other model series (Audi A3, A4,
TT), this mobile phone holder no longer has a
connection cable. It is connected to the telephone
transmitter and receiver R36 via a contact panel.
Voice operation
The new mobile baseplate can be voice-operated
using the operating unit in the steering wheel E221.
The handsfree volume can also be set using the
multi-function steering wheel and names or
telephone numbers can be dialled in the
phonebook. The operating unit in the steering
wheel E22 1 passes the data si gnals fo r this on to the
steering column electrics J527 as LIN signals.
This control unit converts the data into CAN
messages and transfers these messages to the data
bus diagnosis interface J533 on CAN Convenience.
Here, the digital data messages are converted into
MOST data records and are passed to the telephone
transmitter and receiver R36 via the MOST ring.
The adapter set always includes a Push-to-talk
button (PTT), which enables voice operation even
without the multi-function steering wheel option.
This button is included on every available mobile
phone adapter.
The PTT button has different functionalities,
depending on the MMI used:
– MMI High: Accept/Hang up
– MMI Basic/Basic Plus/Basic Navigation:
Accept/Hand up and also
Activate internal voice operation of the
telephone transmitter and receiver R36.
This internal voice operation function is only
available in the MMI Basic versions. Voice operation
in the MMI High version is implemented via the
optional control unit for voice input J507.
326_106
This illustration depicts the service handset for the fixed telephone
installation (MMI High) and the alternative universal mobile
baseplate with the mobile adapter. A vehicle cannot be fitted with
both systems!

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Handsfree operation
The telephone transmitter and receiver R36 sends
the signals for handsfree operation (Voice, Phone
Mute, etc.) via the MOST Infotainment bus to the
relevant sound system, which is either integrated
into the control unit for front information J533 or
the independent digital sound system control
unit J525. Here, the digital data is converted into
analogue data and is output on the loudspeaker.
Echo and noise compensation
The telephone transmitter and receiver R36 is fitted
as standard with a DSP-based echo compensation
system. If the optional voice operating system is
also ordered, the echo and noise compensation
function of the control unit for voice input J507 is
used. Among other things, this results in an
improved handsfree quality, even for the passenger.
Infotainment
Microphone arrangement in the MMI High version Microphone arrangement in the MMI versions Basic, Basic Plus and
Basic Navigation.
Microphone, front
left R140 Control unit for
information J523Te l e p h o n e
transmitter and
for telephone
R36
326_136
Microphone unit in
front roof module
R164Microphone, front
left R140
A / D
Amplifier Control unit for
digital sound
package R525 Te l e p h o n e
transmitter and
receiver R36
326_137 Control unit for
voice input
J507