Telephone (cellular mobile telephone network) log-in - GF82.70-P-0005-01S
Cellular mobile telephone network log-in
Requirements:
- SIM card is inserted
- Device is switched on (on/off button)
Enter the personal PIN number (Personal Identification Number) if required (depends on the system). Next, the telephone establishes a connection with the most favorably located base transceiver station (BTS) and transmits the data via the base station controller (BSC) to the mobile service switching center (MSC) . The access to the network is granted when the MCS has checked the required data. After a successful log-in, the display of the telephone shows the name of the network (e.g: D1 or O2 etc.).
If the closest MSC is not the one in which the user was entered as a cellular mobile telephone subscriber when he/she registered his/her cellular phone in the home location register (HLR) , then he/she is listed in the visitor location register (VLR) that is located there. The MSC mentioned then connects to the MSC of the user in which he/she is registered as a cellular mobile telephone subscriber in the HLR and access is granted after checking the required data. The MSC thus automatically obtains information on the location of the subscriber and can route incoming telephone calls to him/her while he/she is logged into the network. Any change of location is updated in the MSC.