GSM standard

thumb|The GSM logo is used to identify compatible devices and equipment. The dots symbolize three clients in the home network and one roaming client.

digital mobile phone technology that allows improved data transmission rates as a backward-compatible extension of GSM

thumb|An SMS welcome to [[Proximus (Belgium) customers who have roamed onto T-Mobile (now EE) in the UK]]

GSM-R, Global System for Mobile Communications – Railway or GSM-Railway is an international wireless communications standard for railway communication and applications.

communications protocol

gateway between mobile networks and frequently the Internet

The GSM Association (GSMA) is the advocacy and lobbying organization for the mobile communications industry, representing more than 750 mobile operators as full members and a further 400 companies in the broader mobile ecosystem as associate members.

standard network architecture for telecom networks

Country code as defined in ITU-T Recommendation

network and communication protocol

component of the Global System for Mobile Communications (GSM)

data transmission standard for mobile phones

cross-industry collaboration

A5/1 is a stream cipher used to provide over-the-air communication privacy in the GSM cellular telephone standard. It is one of several implementations of the A5 security protocol. It was initially kept secret, but became public knowledge through leaks and reverse engineering. A number of serious weaknesses in the cipher have been identified.

the section of a cellular telephone network responsible for handling traffic and signaling

protocol designed to provide an interface for the transfer of short messages

identifying the location of a mobile phone

OpenBTS (Open Base Transceiver Station) is a software-based GSM access point, allowing standard GSM-compatible mobile phones to be used as SIP endpoints in Voice over IP (VoIP) networks. OpenBTS is open-source software developed and maintained by Range Networks. The public release of OpenBTS is notable for being the first free-software implementation of the lower three layers of the industry-standard GSM protocol stack. It is written in C++ and released as free software under the terms of version 3 of the GNU Affero General Public License.

type of mobile phone

set of standards designed to work on either a GSM core network or the Universal Mobile Telecommunications System network

Database of mobile equipment identifiers

unique identifier of a Public Land Mobile Network

mobile telephony network band

one of the major functions of a GSM or a UMTS network that allows mobile phones to work

identifier

character encoding

computer network protocol

GERAN is an abbreviation for GSM EDGE Radio Access Network. The standards for GERAN are maintained by the 3GPP (Third Generation Partnership Project). GERAN is a key part of GSM, and also of combined UMTS/GSM networks.

length of time a signal takes to reach the base station from a mobile phone

The COMP128 algorithms are implementations of the A3 and A8 functions defined in the GSM standard. A3 is used to authenticate the mobile station to the network. A8 is used to generate the session key used by A5 to encrypt the data transmitted between the mobile station and the BTS.

Network Identity and Time Zone (NITZ) is a mechanism for provisioning local time and date, time zone and daylight saving time (DST) offset, as well as network provider identity information, to mobile devices via a wireless network.