Mobile Station Integrated Services Digital Network (MSISDN) is the telephone number structured according to the ITU-T Recommendation E.164 numbering plan that is assigned to a mobile user.

The Mobile Subscriber Identification Number (MSIN) is a unique serial number to identify mobile subscribers within a mobile carrier network.

A Mobile Switching Center (MSC) is a core part of the GSM/CDMA network system. It acts as a control center of a Network Switching Subsystem (NSS).

Mobile Network Code (MNC) is a unique two- or three-digit number used to identify a home Public Land Mobile Network (PLMN) to.

Mobile Country Code (MCC) is defined by ITU-T as standard E.212. MCC is a mobile code consisting of three digits used to identify GSM networks.