Have you ever remembered that the first call of cell phone was made by Finnish Prime Minister Harri Holkeri

20 years ago, July 1, 1991, the world's first GSM call on the commercial networks by former Finnish Prime Minister Harri Holkeri and the deputy mayor of Tampere, Kaarina Suonio.

Have you ever remembered that the first call of cell phone made by Finnish Prime Minister Harri Holkeri

The first GSM network was built by Telenokia and Siemens - which now becomes the Nokia Siemens Networks for Finnish operator Radiolinja, which now operates under the name Elisa.

During the call, Harri Holkeri and Kaarina Suonio discuss the benefits of new digital GSM technology, including sound quality and excellent security, and the fact that the identity of the phone is SIM card phones, so that consumers choose the products easier for mobile phones that they like.

Global System for Mobile communications (GSM) was adopted in 1987 as a European standard for digital cellular technology. Second-generation mobile phone technology can carry data traffic and voice as well. GSM voice calls are of high quality, easy international roaming and support for new services like text messaging (SMS) laid the foundation for the rapid use of mobile phones worldwide.

In subsequent years, the number of GSM subscribers grow beyond all predictions. The number of GSM subscribers reached more than 500 million in the first decade to 2001. Based on data from GSA, currently there are 838 GSM networks in 234 countries and territories worldwide independent has more than 4.4 billion subscriber lines. GSM continues to grow rapidly, with the addition of 1 million new GSM subscribers every day. It reaches nearly 12 customers every second

"GSM is the first digital technology based on open standards and a technology that allows widespread use of cellular technology," said Pekka Soini as Head of Corporate Development Office Nokia Siemens Networks through its official statement on Sunday (03/07/2011).

"GSM continues to evolve and there will still be up to several decades along with the 3G and LTE as an important foundation block for mobile broadband. We see sustainable business opportunities in the Single GSM RAN Advanced that allows modernization of hardware, upgrade the capacity of high-quality sound as well as smart devices, repair connection machine-to-machine and high-definition sound, "he added.

"The latest innovation that was announced in June this year, features Orthogonal Sub-Channel Dual Full Rate, is a software feature that allows an increase in voice capacity up to 100% and significantly improve sound quality for a GSM speech," said Soini again.

VP Compatibility & Industry Collaboration Nokia Timo Ali-Vehmas added, "When we built this system and create the first Nokia GSM phones that will make the first call, very few of us dared to dream about the future."

"None of us at that time imagined that the impact of GSM will continue for the life of billions of people around the world. Of course, all this may not be possible without the efforts initiated by the many people with brains in this industry in last twenty years. That effort continues today and glad to see the GSM continues to grow and do an update with lots of interesting ways. "

Family of GSM technology, standardized by 3GPP, has further evolved into the EDGE, 3G and LTE. Third-generation WCDMA 3G networks have a higher data speeds and more capacity for mobile broadband services. LTE, has been operating commercially in more than 20 networks around the world, marking a further step in the evolution of technology.