The GSM mobile telephony system, is increasingly popular and established throughout the world. In 1989, GSM responsibility was transferred to the European Telecommunication Standards Institute (ETSI), and phase I of the GSM specifications were published in 1990. Commercial service was started in mid1991, and by 1993 there were 36 GSM networks in 22 countries, with 25 additional countries having already selected or considering GSM In addition to Europe, South Africa, Australia, and many Middle and Far East countries have chosen to adopt GSM. By the beginning of 1994, there were 1.3 million subscribers worldwide. The acronym GSM now (aptly) stands for Global System for Mobile telecommunications. The most basic teleservice supported by GSM is telephony. A unique feature of GSM compared to older analog systems is the Short Message Service (SMS). Supplementary services are provided on top of teleservices or bearer services, and include features such as international roaming, caller identification, call forwarding, call waiting, multiparty conversations, and barring of outgoing (international) calls, among others. GSM and GPRS interfaces, SS7 networks and packet data networks are accurately monitored using RADCOM's Cellular Performer. The Cellular Performer supports the complete GSM and GPRS protocol stack, including comprehensive GPRS testing capabilities for a wide variety of applications. Testing Capabilities - Traffic monitoring - Monitors GSM A and all GPRS network interfaces: Gn, Gb, Gr, Gp, Gi, Gf, Gc, Gs, etc.
- Overview - Monitors multiple interfaces simultaneously.
- Deep analysis - Provides numerous statistics and analysis modes for each GSM/GPRS protocol.
- End-to-End - Easily performs full network testing from data network through to the mobile station.
- QoS - Measures latency, loss and jitter over any GPRS network.
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