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Home >> Mercedes Benz >> 2009 >> SL550 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Body Electrical -- Basic Knowledge - 230 Chassis - 2 Of 2 >> Basic Knowledge >> Universal Portable CTEL Interface (UPCI [UHI]) control unit, location/task - GF82.70-P-5100 >> Universal Portable CTEL Interface (UPCI) control unit, location/task - GF82.70-P-5100RA

Universal Portable CTEL Interface (UPCI) control unit, location/task - GF82.70-P-5100RA

MODEL 230 as of 1.6.04 up to 28.2.06 with CODE (386) Preinstallation for "portable CTEL" UPCI telephone system with CODE (388) "Portable CTEL" UPCI telephone system except CODE (494) USA version except CODE (498) Japanese version 

MODEL 230 as of 1.6.04 up to 28.2.06 with CODE (494) USA version with CODE (387) Preinstallation for telephone "Handy" UPCI system, USA/Canada with CODE (388) "Portable CTEL" UPCI telephone system except CODE (498) Japanese version 

MODEL 230 as of 1.7.04 up to 31.3.06 

Fig 1: Identifying UPCI Control Unit Location
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  UPCI (Universal Portable CTEL Interface) control unit, location The UPCI (Universal Portable CTEL Interface) control unit (N123/1) is located on an equipment bridge in the left rear side of the trunk.  
  UPCI (Universal Portable CTEL Interface) control unit, task The UPCI (Universal Portable CTEL Interface) control unit (N123/1) serves as a converter for electrical signals into optical signals and vice versa.