On September 14, 2010, at the Fall 2010 DEMO conference, the original authors launched Range Networks as a start up company to commercialize OpenBTS-based products. The project was initially conducted through Kestrel Signal Processing, the founders' consulting firm. Burgess with the aim of the project to drastically reduce the cost of GSM service provision in rural areas, the developing world, and hard to reach locations such as oil rigs. The project was started by Harvind Samra and David A. The original implementation used a Universal Software Radio Peripheral from Ettus Research, but has since been expanded to support several digital radios in implementations ranging from full-scale base stations to embedded femtocells. The OpenBTS Um air interface uses a software-defined radio transceiver with no specialized GSM hardware. Multiple OpenBTS units can also share a common VOIP switch or PBX to form larger networks This VOIP switch or PBX software can be installed on the same computer used to run OpenBTS itself, forming a self-contained cellular network in a single computer system. Instead of forwarding call traffic through to an operator's mobile switching center, OpenBTS delivers calls via SIP to a VOIP soft switch (such as FreeSWITCH or yate) or PBX (such as Asterisk). Instead of relying on external base station controllers for radio resource management, OpenBTS units perform this function internally. OpenBTS replaces the conventional GSM operator core network infrastructure from layer 3 upwards. It is written in C++ and released as free software under the terms of version 3 of the GNU Affero General Public License. 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. OpenBTS is open-source software developed and maintained by Range Networks. 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.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |