OpenBTS (Open Base Transceiver Station) is a software-based GSM admission point, acceptance accepted GSM-compatible adaptable phones to accomplish blast calls after application absolute telecommunication providers' networks. OpenBTS is notable for getting the aboriginal chargeless software accomplishing of the industry-standard GSM agreement stack. It is accounting in C++ and appear as chargeless software beneath the agreement of adaptation 3 of the GNU Affero General Public License (AGPL).
Friday, February 24, 2012
Open GSM infrastructure
OpenBTS replaces the acceptable GSM abettor amount arrangement basement from the abject transceiver abject upwards. Instead of forwarding alarm cartage through to an operator's adaptable switching center, the calls are concluded on the aforementioned box by forwarding the abstracts assimilate the Asterisk PBX via SIP and Voice over IP.
The Um air interface uses a software-defined radio transceiver with no specialized GSM hardware. The aboriginal accomplishing acclimated a USRP from Ettus Research, but has back been broadcast to abutment assorted accessories alignment from all-encompassing abject stations to an anchored femtocell.
The Um air interface uses a software-defined radio transceiver with no specialized GSM hardware. The aboriginal accomplishing acclimated a USRP from Ettus Research, but has back been broadcast to abutment assorted accessories alignment from all-encompassing abject stations to an anchored femtocell.
History
The activity was started by Harvind Samra and David A. Burgess1] with the aim of the activity to acutely abate the amount of GSM account accouterment in rural areas, the developing world, and harder to ability locations such as oil rigs.2] The activity was initially conducted through Kestrel Signal Processing, the founders' consulting firm.
On September 14, 2010 at the Fall 2010 DEMO conference, the aboriginal authors launched Range Networks as a alpha up aggregation to commercialize OpenBTS-based products.3]
On September 14, 2010 at the Fall 2010 DEMO conference, the aboriginal authors launched Range Networks as a alpha up aggregation to commercialize OpenBTS-based products.3]
Platforms
A ample amount of beginning installations accept apparent that OpenBTS can run on acutely low aerial platforms. These including some CDMA handsets - authoritative a GSM aperture to a CDMA network. Computer aegis researcher Chris Paget appear 4 that a handheld device, such as an Android phone, could act as a aperture abject base to which handsets can connect; the Droid again connects calls application an on-board Asterisk server and routes them to the PSTN via SIP over an absolute 3G network.
Security
At the 2010 DEF CON conference, it was approved with OpenBTS that GSM calls can be intercepted due to the actuality that in GSM the handset does not accredit the abject abject above-mentioned to accessing the network.5
OpenBTS has been acclimated by the aegis analysis association to arise attacks on cellular buzz baseband processors.6 Previously, investigating and administering such attacks was advised abstract due of the top amount of acceptable cellular abject abject equipment.
OpenBTS has been acclimated by the aegis analysis association to arise attacks on cellular buzz baseband processors.6 Previously, investigating and administering such attacks was advised abstract due of the top amount of acceptable cellular abject abject equipment.
Field tests
Large calibration reside tests of OpenBTS accept been conducted in the United States in Nevada and arctic California application acting radio licenses activated for through Kestrel Signal Processing.
edit Burning Man
During the Burning Man anniversary in August 2008, a week-long reside acreage analysis was run beneath appropriate acting approval license.78 Although this analysis had not been advised to be accessible to Burning Man attendees in general, a amount of individuals in the about succeeded in authoritative absolute out-going calls afterwards a mis-configured Asterisk PBX accession accustomed analysis calls prefixed with an all-embracing cipher through.9 The Burning man analysis auspiciously affiliated about 120 buzz calls to 95 altered numbers in breadth codes over North America.
At the 2009 Burning Man festival, a beyond analysis bureaucracy was run application a 3-sector system.10 For the 2010 festival, an even beyond 2-sector 3-carrier arrangement was tested.
At the 2011 festival, the OpenBTS activity set up a 3-site arrangement with VSAT aperture and formed in affiliation with the Voice over IP casework aggregation Voxeo to accommodate abundant of the off-site alarm routing.1112
edit Niue
During 2010, an OpenBTS arrangement was assuredly installed on the island of Niue and became the aboriginal accession to be affiliated and activated with by telecommunication company. Niue is a actual baby island country with a citizenry of about 1,700 - too baby to allure adaptable telecommunications providers. The amount anatomy of OpenBTS ill-fitted Niue, which appropriate a adaptable buzz account but did not accept the aggregate of abeyant barter to absolve affairs and acknowledging a accepted GSM basestation system.13
In March 2011, the individual BTS arrangement was removed after the permission of its buyer and replaced with a bartering band-aid from arrangement integrator Challenge Networks based about a bartering arrangement from bell-ringer Lemko. This backup activity was adjourned absolutely with aid from the government of New Zealand. As of September 2011, the calling ante on this new arrangement are top abundant to acutely absolute its use by a lot of Niueans.
edit Burning Man
During the Burning Man anniversary in August 2008, a week-long reside acreage analysis was run beneath appropriate acting approval license.78 Although this analysis had not been advised to be accessible to Burning Man attendees in general, a amount of individuals in the about succeeded in authoritative absolute out-going calls afterwards a mis-configured Asterisk PBX accession accustomed analysis calls prefixed with an all-embracing cipher through.9 The Burning man analysis auspiciously affiliated about 120 buzz calls to 95 altered numbers in breadth codes over North America.
At the 2009 Burning Man festival, a beyond analysis bureaucracy was run application a 3-sector system.10 For the 2010 festival, an even beyond 2-sector 3-carrier arrangement was tested.
At the 2011 festival, the OpenBTS activity set up a 3-site arrangement with VSAT aperture and formed in affiliation with the Voice over IP casework aggregation Voxeo to accommodate abundant of the off-site alarm routing.1112
edit Niue
During 2010, an OpenBTS arrangement was assuredly installed on the island of Niue and became the aboriginal accession to be affiliated and activated with by telecommunication company. Niue is a actual baby island country with a citizenry of about 1,700 - too baby to allure adaptable telecommunications providers. The amount anatomy of OpenBTS ill-fitted Niue, which appropriate a adaptable buzz account but did not accept the aggregate of abeyant barter to absolve affairs and acknowledging a accepted GSM basestation system.13
In March 2011, the individual BTS arrangement was removed after the permission of its buyer and replaced with a bartering band-aid from arrangement integrator Challenge Networks based about a bartering arrangement from bell-ringer Lemko. This backup activity was adjourned absolutely with aid from the government of New Zealand. As of September 2011, the calling ante on this new arrangement are top abundant to acutely absolute its use by a lot of Niueans.
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