2201R Mobile Tester User Guide
Chapter 3 Performing manual tests and measurements in GSM mode
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Reading the capabilities of the mobile phone
Mobile phone parameters
The 2201R Mobile Tester can show the following information about the phone under test:
IMEI (SV)
The 2201R displays the International Mobile Equipment Identity (IMEI) as indicated by the mobile. The IMEI is the
registration number of the mobile hardware which identifies it internationally. The IMEI is stored inside the mobile's
electronics and can only be read out by the 2201R through the radio interface.
The IMEI consists of 15 digits; the last one is not transferred over the radio interface but calculated from the other
14 digits. The additional two digits shown in brackets indicate the software version in the mobile phone which has
been transferred to the 2201R along with the IMEI.
IMSI
The International Mobile Subscriber Identity (IMSI) is the individual identity number of the subscriber in the network.
The mobile reads the IMSI from the SIM (Subscriber Identity Module) card.
The IMSI consists of up to 15 digits. The first three digits are called the MCC and give the code of the country in
which the mobile subscriber is registered.
The next two digits (the so-called MNC) are the code of the national network the mobile subscriber is registered in.
Please note that there are three digits being used for the MNC in North America.
The remaining ten digits (nine in North America) are the registration number of the subscriber within the network.
For testing purposes, identical test SIM cards are typically being used, with the MCC and MNC set to 1. The bit error
rate measurement may only be supported if such a test SIM is being used.
MS power class
The power class of the mobile phone is indicated as MS Class. The power class gives the maximum RF output power
a mobile is able to transmit on.
Power classes for the GSM 850 and GSM 900 bands differ from those in the GSM 1800 and GSM 1900 bands, so the
2201R Mobile Tester usually shows two power classes. See Table 10 for the nominal maximum power level in each
class.
GSM revision level
The GSM revision level is shown as Rev. Level and indicates the protocol capabilities and features of the GSM phones.
GSM phase 1 covers mobile phones approved until the later 90s only; all newer phones are phase 2 mobiles.
Table 10 GSM power classes and maximum power levels
Power class GSM 850, GSM 900 GSM 1800, GSM 1900
1 43 dBm (20 W) 30 dBm (1 W)
2 39 dBm (8 W) 24 dBm (250 mW)
3 37 dBm (5 W)
36 dBm (4 W)
Note:a
a. 33 dBm (2 W) for GSM 1900
4 33 dBm (2 W) –
5 29 dBm (800 mW) –