GF82.70-P-0007-04FA Mobile Phone System, Establishing Connection In the Public Telephone Network

GF82.70-P-0007-04FA Mobile Phone System, Establishing Connection In The Public Telephone Network
MODEL 203.7
- with CODE (386) Mobile phone MODEL 203.7
- as of Model Year 09 /AEJ 08 MOPF







AC Authentication Center
BSC Base Station Controller
BTS Base Transceiver Station
EIR Equipment Identification Register
HLR Home Location Register
MSC Mobile Service Switching Center
PSTN Public Switched Telephone Network (PSTN)
VLR Visitor Location Register

Function requirements
- Status "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 unit" switched on
- Enabled Subscriber Identification Module (SIM) card inserted in mobile phone
- Compatible mobile phone inserted into UPCI cell phone holder (Universal Portable Cell Phone Interface) (A34/15)
- Correct Personal Identification Number (PIN) entered, if set on the mobile phone

The cradle is connected to the UPCI (Universal Portable Cell Phone Interface) control unit (N123/1). The UPCI control unit forms the interface to the Media Oriented Transport System (MOST).

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 (523) MB Audio 20 radio
- Radio and navigation unit (A2/56), with code (525) MB Audio 50 APS radio
- COMAND operating, display and controller unit (A40/3), with code (527) COMAND APS with single DVD drive (with navigation)

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