MTS and Siemens carry out the first succesful UMTS voice call in Russia

date: November 22, 2001

Mobile TeleSystems, Russia's largest GSM mobile operator, and Siemens Information and Communication Mobile (IC Mobile) have carried out the first UMTS voice call in Russia at the UMTS test network in Moscow. In line with the live demonstration, the mobile terminal devices were connected amongst themselves and with ISDN phones.

The MTS test network includes a full range of features of the UMTS network, in which the core and radio access networks operate using industrial equipment. Unlike a "box option" used by operators to test new technologies, the comprehensive solution adopted by MTS, allows MTS specialists to receive full value data on how the UMTS network functions and inter-operates with GSM and fixed line operators.

The MTS test network currently includes a circuit switching and packet oriented switch, a controller and three UMTS base stations. The network is expected to become the central network for carrying out - together with research institutes of the Russian Ministry of Communications - tests, which will be undertaken to solve a number of technical issues, including the allocation of radio frequencies for UMTS networks.

Commenting on the event, MTS Technical Vice-President, Dr. Jury A. Gromakov said: "By carrying out the first UMTS voice call, we have demonstrated once again that MTS is at the leading edge in the development of some of the most sophisticated technical tasks."

"The success of the first UMTS test voice call in Russia demonstrates that MTS, together with European leading operators, is on the correct path towards 3G communications, and proves the fact that 3G technologies can realistically be launched in the near future," said Mr. Raymond Armes, President of IC Mobile Russian department.

While making the first UMTS call, MTS used 3G phones produced by NEC. Data transmission among mobile terminal devices was carried out on-line through UMTS radio interface (UTRAN FDD) by using UMTS base stations (Node B) and a controller (RNC) produced by Siemens.

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