Universal Cell phone Interface (UPCI [UHI]) control unit, component description - GF82.70-P-5101SX

MODEL 221.0 /1 with CODE (494) USA version up to model year 08/YoM 07

MODEL 221.0 /1 with CODE (387) Preinstallation for telephone "Cell Phone", UPCI [UHI] system, USA/Canada up to model year 08/YoM 07

MODEL 221.0 /1 with CODE (389) Mobile phone preinstallation with universal interface, USA/Canada up to model year 08/YoM 07

MODEL 221.0 /1 with CODE (386) Preinstallation for telephone "Cell Phone", UPCI [UHI] system up to model year 08/YoM 07

MODEL 221.0 /1 with CODE (388) Telephone "Cell Phone", UPCI [UHI] system up to model year 08/YoM 07

MODEL 216.3 with CODE (494) USA version up to model year 08/YoM 07

MODEL 216.3 with CODE (386) Preinstallation for telephone "Cell Phone", UPCI [UHI] system up to model year 08/YoM 07

MODEL 216.3 with CODE (388) Telephone "Cell Phone", UPCI [UHI] system up to model year 08/YoM 07

Shown on model 221

Fig 1: Identifying Universal Portable CTEL Interface (UHI) Control Unit

Courtesy of MERCEDES-BENZ USA

Location

The UPCI (Universal Cell phone Interface) control unit is located in a holder in the trunk on the left-hand side.

Task

The Universal Cell phone Interface (UPCI [UHI]) control unit acts as a communication management platform and is connected to the UPCI [UHI] cell phone holder (Universal Cell phone Interface) (A34/15) via a shielded wiring harness.

The Universal Cell phone Interface (UPCI [UHI]) control unit is responsible for the following tasks:

conversion of electric signals into optical signals for the Media Oriented System Transport (MOST) and vice versa
control of all user-oriented communication and service applications in the vehicle
ensuring that different portable CTELs (A34/6) can be operated
evaluation of signals from Bluetooth devices installed in the vehicle