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Telephone mode, function - GF82.85-P-2007PMD

MODELS 203.0 /2 /7 as of 24.4.04 with CODE (494a) USA version with CODE (388) "Portable CTEL" UPCI telephone system except CODE (528) HIGH Class USA except CODE (530) COMAND APS USA (with navigation system) 

Fig 1: Telephone Mode Function Diagram - Models 203.0 /2 /7 As Of 24.4.04 With Code (494A), (388), (528) And Except Code (530)
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Schematic representation of the radio (A2) with code (388) "portable CTEL" UPCI system telephone 

The Universal Portable CTEL Interface (UPCI [UHI]) control unit (N123/1) allows portable CTELs (A34/6) from different manufacturers (e, g. Siemens, Motorola, Nokia) to be operated in the vehicle. The system installed in the vehicle is able to communicate with various portable cellular telephones (A34/6). It is only necessary to install the corresponding portable cellular telephone (A34/6) required for the UPCI portable cellular telephone holder (universal portable cellular telephone interface) (A34/15) on the UPCI connector plate

Telephone operation 

The telephone system can be operated as follows:

IMPORTANT The volume can be adjusted separately for the telephone mode.

Function 

After a request made via the radio (A2) the telephone radio signals are transmitted and received using the telephone antenna (A2/22). The signals are transmitted over the E-net compensator (A28/3) to the Universal Portable CTEL Interface (UPCI [UHI]) control unit (N123/1). The E-net compensator (A28/10) has the task of compensating for losses caused by the higher transmission frequency of the E-net by means of amplification. The telephone is illustrated by a symbol, if it is operational, in the display of the radio (A2). The reception field strength of the telephone after plugging it into the UPCI portable CTEL holder (Universal Portable CTEL Interface) (A34/15) is also displayed. All control signals and useful signals (e.g. sound signals with hands-free system activated) are transmitted via the media-oriented system transport (MOST).

IMPORTANT To communicate with the MOST subscribers, the portable CTEL (A34/6) requires an interface, the UPCI (Universal Portable CTEL Interface) control unit (N123/1).

The rechargeable battery for portable cellular telephone (A34/6) is loaded via the UPCI control unit (universal portable cellular telephone interface) (N123/1).

Charging is accomplished automatically as soon as the UPCI control unit (universal portable cellular telephone interface) (N123/1) is activated regardless whether the portable cellular telephone (A34/6) is switched on or off. The radio (A2) has the following telephone functions:

Hands-free mode 

During a phone call it must be possible for the user to hold the conversation using the hands-free system. For this reason, there is a hands-free system microphone group (A67b1) in the mirror housing of the inside rearview mirror unit (A67). From there the microphone signals are sent straight to the UPCI (Universal Portable CTEL Interface) control unit (N123/1), digitized, and transmitted to the radio (A2) via the MOST.

The signals are processed again in the radio (A2) and sent to the vehicle speakers. Hands-free conversation is controlled by pressing the "Micro On, Micro Off" button on the radio (A2).

During a hands-free telephone call the audio source is automatically muted. Operation can only take place via the multifunction steering wheel or the radio (A2).

IMPORTANT Because of legal stipulations prohibiting the use of a telephone without a hands-free system while driving, it is not possible to telephone hands-free when the portable CTEL (A34/6) is removed from the UPCI (Universal Portable CTEL Interface) holder (A34/15).

Create SMS Process SMS 

In the basic service menu the "Mail" button leads to the creation, dispatch and administration of text messages (short message service - SMS).

There are the following options:

The characters can be entered with the dialing assistance or the 12-key keypad. These functions are also used for sending SMS messages; a receiver can be specified or dialed from the telephone book.

Data safety, SMS buffer 

When the power supply fails, the characters stored in the buffer are saved. However, it is possible for up to 4 characters to be lost. When switched off in a controlled manner, no characters are lost.

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