Mobile phone system, establishing connection in the public telephone network - GF82.70-P-0007-04GA

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Illustrated on model 463.236

Fig 1: Establishing Mobile Phone System Connection In Public Telephone Network

Courtesy of MERCEDES-BENZ USA

Depending on the equipment installed one of the following control units will be installed, hereafter referred to as the "audio unit":

Radio (A2) (with code (EF5) MB Audio 20 CD radio, (NTG 2.5))
COMAND operating, display and controller unit (A40/3) (with code (EU1) COMAND, APS)

Function requirements

Status of circuit 30 "ON" or circuit 15R "ON".
One mobile phone network is available in sufficient strength and quality
Mobile phone system operating error-free
Mobile phone and audio equipment switched on
Enabled Subscriber Identification Module (SIM) card inserted in mobile phone
Correct Personal Identification Number (PIN) entered, if set on the mobile phone
Compatible mobile phone inserted into UPCI [UHI] cell phone holder (Universal Portable Cell Phone Interface) (A34/15), which is connected to Bluetooth module (A34/7) (with code (EH2) Comfort telephony), or Bluetooth-capable mobile phone authorized in vehicle and on the audio equipment (without code (EH2) Comfort telephony)

So that a bluetooth-capable mobile phone that is authorized on the audio equipment can be operated in the vehicle, the mobile phone must support the hands-free profile (HFP) 1.0 or 1.5. More information is available under:

www.mercedes-benz-mobile.com

General information on establishing a connection in the mobile telephone system

After logging into the base transceiver station, the base station controller and the corresponding mobile service switching center and checking access authorization by the authentification center is complete, the mobile telephone subscriber can call his/her desired party by entering the telephone number.

If the mobile telephone subscriber is authorized, the call is fed by the mobile service switching center into the public telephone network via the public switched telephone network.