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Setting up/ending phone call, function - GF82.70-P-2008LE

MODEL 216, 221 up to 31.5.09 with CODE (386) Preinstallation for telephone "Cell phone", UPCI [UHI] system with CODE (389) Mobile phone preinstallation with universal interface, USA/Canada as of model year 2009 /YoM 08 

MODEL 216 except CODE (498) Japan version as of model year 2010 /YoM 09 

MODEL 221 except CODE (498) Japan version as of model year 2010 /YoM 09 model refinement package 

Function requirements, general 

Function of setting up/ending phone call, general 

The mobile phone can be used by the user to initiate or terminate a telephone call to another person in the mobile phone system network or the fixed-line network.

A phone call can be set up and ended either using:

IMPORTANT In vehicles with code (856) 2nd handset in rear armrest, a mobile phone that is authorized on the COMAND controller unit can be operated.

The "Set up and terminate telephone call" function consists of the following subfunctions:

Function sequence, call signal 

The mobile phone receives a call signal via the following route:

The telephone and GPS roof antenna (A2/49) (model 221) or the telephone and GPS antenna (A2/49) (model 216) receives the call signal.

The signal is forwarded via a direct line as follows:

Up to 31.5.09:

As of 1.6.09

The Bluetooth module transmits the signals via a Bluetooth connection to the Bluetooth antenna (A2/91). The Bluetooth antenna transmits the signals directly to the COMAND controller unit.

Function sequence for accepting call 

The accept call function consists of the following subfunctions:

Accept call function sequence via mobile phone 

Pressing the "Accept call" button on the mobile phone answers the call in handsfree mode. The control signals from the buttons on the mobile phone are processed internally.

Accept call function sequence via rear handset (with CODE (856) 2nd handset in rear armrest) 

Pressing the "Accept call" button on the rear handset answers the call. If the rear handset is in the rear handset holder (A34/13), the call is answered in handsfree mode.

The request to accept the call passes via a Bluetooth connection from the rear handset to the Bluetooth antenna and then to the COMAND controller unit.

Without code (386) Comfort telephony:

Communication takes place from the COMAND controller unit to the Bluetooth antenna and then to the mobile phone.

With code (386) Comfort telephony:

Communication takes place from the COMAND controller unit to the Bluetooth antenna and then to the Bluetooth module. From the Bluetooth module, communication takes place via the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder to the mobile phone.

Function sequence, accept call via the front central operating unit 

The call is answered in handsfree mode by selecting "Accept call" using the front central operating unit.

The request to accept the call is transmitted by the front central operating unit to the COMAND controller unit via the telematics CAN (CAN A).

Function sequence, accept call via center console button group 

The call is answered in handsfree mode by pressing the "Accept call" button via the center console button group. The request to accept the call is transmitted by the center console button group to the front central operating unit via COU [ZBE] LIN (LIN A1). The front central operating unit sends the request over the telematics CAN to the COMAND controller unit.

Shown on model 221 up to 31.5.09 

Accept call function sequence via right multifunction steering wheel button group 

The call is answered in handsfree mode by pressing the Accept/terminate phone call button in the right multifunction steering wheel button group.

Fig 1: Identifying Multifunction Display & Steering Wheel Buttons
G07600027Courtesy of MERCEDES-BENZ USA

The request to accept the call is transmitted from the Accept/ terminate phone call button via the steering LIN (LIN E1) to the steering column tube module (N80) and via the chassis CAN (CAN E) to the central gateway control unit (N93). The central gateway control unit transmits the request via the central CAN (CAN F) to the COMAND controller unit.

Call setup function sequence 

The call setup function consists of the following subfunctions:

Establish call function sequence over mobile phone 

The telephone number is selected via the buttons on the mobile phone or from the mobile phone's phone book. The "Accept phone call" button is pressed. The telephone call is then established in handsfree mode.

Call setup function sequence via rear handset (with CODE (856) 2nd handset in rear armrest) 

The telephone number is selected or entered using the buttons on the rear handset. Pressing the "Accept phone call" button triggers the request to set up the call.

The request to set up the call passes via a Bluetooth connection from the rear handset to the Bluetooth antenna and then to the COMAND controller unit.

Without code (386) Comfort telephony:

Communication takes place from the COMAND controller unit to the Bluetooth antenna and then to the mobile phone.

With code (386) Comfort telephony:

Communication takes place from the COMAND controller unit to the Bluetooth antenna and then to the Bluetooth module. From the Bluetooth module, communication takes place via the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder to the mobile phone.

Function sequence, establish call via center console button group 

The telephone function is selected through the "TEL" menu item or by pressing the "Answer" control button. This takes place with the help of the Telephone/Navigation quick select button (A40/9s5) on the front central operating unit and is then displayed in the COMAND display or in the SPLITVIEW display.

The telephone number is entered using the center console button group. Pressing the "Answer" control button on the center console button group sets up the telephone call in handsfree mode.

The request to set up the call is transmitted by the center console button group to the front central operating unit via COU [ZBE] LIN. The front central operating unit sends the request over the telematics CAN to the COMAND controller unit.

Up to 31.5.09:

The COMAND controller unit transmits the request via Media Oriented System Transport (MOST) to the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit (N123/1). The signal is transmitted by the UPCI [UHI] control unit directly to the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder and processed via the inserted mobile phone.

As of 1.6.09

The signals are transmitted directly to the Bluetooth antenna.

Function sequence, establish call using multifunction steering wheel button groups 

The address book or the mobile phone's telephone book is selected by pressing the scroll forward/back button (S110s1) through the selection menu in the instrument cluster (A1).

The name of the person to be called is selected by scrolling forward and back in the address book or the telephone book of the mobile phone using the scroll forward and back button. The Accept/terminate phone call button or the OK button can be used to set up the telephone call in the handsfree mode.

The request to set up the call is transmitted from the Accept/ terminate phone call button via the steering LIN to the steering column tube module and then via the chassis CAN to the central gateway control unit. The central gateway control unit transmits the request via the central CAN to the COMAND controller unit.

Up to 31.5.09:

The COMAND controller unit transmits the request via MOST to the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit.

The signal is transmitted by the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit directly to the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder and processed via the inserted mobile phone.

As of 1.6.09

The signals are transmitted directly to the Bluetooth antenna.

Call setup function sequence via VCS [SBS] (up to 31.5.09 with code (813) Voice control system (VCS [SBS]), as of 1.6.09 standard equipment) 

The voice control of the VCS [SBS] is activated by pressing the VCS On button (S111s4) of the right multifunction steering wheel button group.

The request to set up the call is transmitted from the VCS [SBS] button via the steering LIN to the steering column tube module and then via the chassis CAN to the central gateway control unit. The central gateway control unit transmits the request via the central CAN to the COMAND controller unit.

Establishing a call is activated in the dialog with the VCS [SBS] with the help of voice commands, e.g. with the following:

A signal tone is emitted after the voice control system has been activated.

Up to 31.5.09:

The voice commands are picked up by the handsfree system microphone group (A67b1) and forwarded to the voice control system (VCS [SBS]) control unit via a direct line.

The voice control of the voice control system (VCS [SBS]) is used to establish the telephone call in the handsfree mode.

As of 1.6.09

The voice commands are picked up by the handsfree system microphone group and relayed to the COMAND controller unit via a direct line.

The voice control is used to establish the telephone call in handsfree mode.

Function sequence, establish call via front central operating unit 

The telephone function is selected using the "Telephone" menu item, which takes place using the Telephone/Navigation quick select button on the front central operating unit, and is then indicated on the COMAND display or the SPLITVIEW display.

After selecting the telephone number via the front central operating unit and activating the "TRANSMIT" function via the rotary pushbutton (A40/9s11), the telephone call is established in handsfree mode.

Function sequence for handsfree mode 

Voice input is implemented as follows:

Up to 31.5.09:

As of 1.6.09

Voice input in handsfree mode is picked up by the handsfree system microphone group and forwarded to the COMAND controller unit via a direct line.

Function sequence for voice output 

Voice output is implemented as follows:

Voice output is over the MOST to the audio tuner control unit (N93/1) or the digital sound processor (A2/69) (model 221 as of 1.9.10 with code (811) Advanced Sound System) and sent over direct lines to the following speakers.

Model 216 without code (810) Sound system:

Model 216 with code (810) Sound system:

Model 221 without code (810) Sound system and without code (811) Advanced Sound System:

Model 221 with code (810) Sound system:

Model 221 (as of 1.9.10) with code (811) Advanced Sound System:

IMPORTANT The woofers and bass box speaker on model 221 (as of 1.9.10) with code (811) Advanced Sound System are actuated by the sound amplifier (A2/13), which is controlled by the digital sound processor.

Call termination function sequence 

The terminate call function consists of the following subfunctions:

Terminate call function sequence via mobile phone 

Pressing the "QUIT" button on the mobile phone terminates the telephone call. The control signals from the buttons on the mobile phone are processed internally.

Terminate call function sequence via rear handset (with code (856) 2nd handset in rear armrest) 

Pressing the "END" button on the rear handset terminates the active call in "private mode".

The request to terminate the call passes via a Bluetooth connection from the rear handset to the Bluetooth antenna and then to the COMAND controller unit.

Without code (386) Comfort telephony:

Communication takes place from the COMAND controller unit to the Bluetooth antenna and then to the mobile phone.

With code (386) Comfort telephony:

Communication takes place from the COMAND controller unit to the Bluetooth antenna and then to the Bluetooth module. From the Bluetooth module, communication takes place via the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder to the mobile phone.

Function sequence, terminate call via center console button group 

The telephone call in handsfree mode is terminated by pressing the "Terminate call" button on the center console button group. The request to terminate the call is transmitted by the center console button group to the front central operating unit via COU [ZBE] LIN. The front central operating unit sends the request over the telematics CAN to the COMAND controller unit.

Up to 31.5.09:

The COMAND controller unit transmits the request via MOST to the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit. The signal is transmitted by the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit directly to the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder and processed via the inserted mobile phone.

As of 1.6.09

The signals are transmitted directly to the Bluetooth antenna.

Terminate call function sequence via multifunction steering wheel button group 

The Accept/terminate phone call button can be used to terminate the telephone call in handsfree mode.

The request to terminate the call is transmitted from the Accept/ terminate phone call button via the steering LIN to the steering column tube module and then forwarded via the chassis CAN to the central gateway control unit. The central gateway control unit transmits the request via the central CAN to the COMAND controller unit.

Up to 31.5.09:

The COMAND controller unit transmits the request via MOST to the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit. The signal is transmitted by the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit directly to the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder and processed via the inserted mobile phone.

As of 1.6.09

The signals are transmitted directly to the Bluetooth antenna.

Function sequence, terminate call via front central operating unit 

The telephone call is terminated by operating the rotary pushbutton of the front central operating unit in handsfree mode. The request to terminate the call is transmitted by the front central operating unit to the COMAND controller unit via the telematics CAN.

Up to 31.5.09:

The COMAND controller unit transmits the request via MOST to the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit. The signal is transmitted by the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit directly to the UPCI [UHI] (Universal Portable Cell Phone Interface) cell phone holder and processed via the inserted mobile phone.

As of 1.6.09

The signals are transmitted directly to the Bluetooth antenna.

Terminate call function sequence in handsfree mode 

Up to 31.5.09:

When a telephone call has been terminated, the UPCI [UHI] (Universal Portable Cell Phone Interface) control unit interrupts the transmitting and receiving of mobile radio signals and data.

As of 1.6.09

Once a telephone call has been terminated, the COMAND controller unit interrupts transmission or reception of the mobile phone signals or data.

REFER TO SYSTEM WIRING DIAGRAMS Electrical function diagram for mobile phone setting up call and ending call Model 216
Up to 31.5.09
PE82.70-P-2060-97CAA
Model 221
Up to 31.5.09
PE82.70-P-2060-97SAA
Model 216
As of 1.6.09
PE82.70-P-2060-97CAB
Model 221
As of 1.6.09
PE82.70-P-2060-97SAB
  Component description for instrument cluster A1
Model 216.3, 221.0/1 except 221.095/195
GF54.30-P-6000LE
Model 221.095/195 GF54.30-P-6000LEH
  Digital sound processor, component description A2/69
Model 221 as of YoM 10 with code (811)
Advanced Sound System
GF82.62-P-5011LE
  Component description for COMAND controller unit A40/3
With code (526) COMAND with single DVD drive (without navigation),
With code (527) COMAND APS with single DVD drive (with navigation system)
GF82.85-P-3136LE 
With code (530) COMAND APS USA (with navigation system) GF82.85-P-3136LEU 
  COMAND display, component description A40/8
Without code (867) SPLITVIEW
GF54.30-P-6110LE
  Front central operating unit, component description A40/9 GF54.21-P-4500LE
  SPLITVIEW display, component description A40/10
With code (867) SPLITVIEW
GF54.30-P-6120LE
  Component description for voice control system (VCS [SBS]) control unit N41/3
Up to 31.5.09 with code (813) Voice control system (VCS [SBS])
GF82.70-P-4300LE 
  Component description for steering column tube module N80 GF54.21-P-6050LE
  Component description for central gateway control unit N93 GF54.21-P-4170LE
  Audio tuner control unit, component description N93/1
Without code (810) Sound system and without code (811) Advanced Sound System
GF82.62-P-3132LES
With code (810) Sound system
Model 221 as of YoM 10 with code (811)
Advanced Sound System and without code (494) USA version
GF82.62-P-3132LE
  Universal Cell phone Interface (UPCI [UHI]) control unit, component description N123/1
up to 31.5.09
GF82.70-P-5101LE