Binary packages for Raspbian 10 and Ubuntu 19.10
Thanks to the great support of the OpenSuSE Build Service, Osmocom is now offering binary package feeds for Raspbian 10 and Ubuntu 19.10.
News
August 2019 Osmocom CNI releases
It seems we forgot the release announcement in early August:
The Osmocom project has released new version of the CNI (Cellular Network Infrastructure) software, including OsmoTRX, OsmoBTS, OsmoBSC, OsmoMGW, OsmoMSC, OsmoHLR, OsmoSGSN, OsmoGGSN.
Those new tagged/released versions contain four months of work since the previous versions released during April 2019. The primary focus was on bug-fixing and stabilization as well as some major new features, such as inter-MSC-handover support in osmo-msc.
You can find pre-compiled binary packages of our latest release for a variety of Debian and Ubuntu GNU/Linux versions at Latest_Builds.
List of tagged versions and link to related ChangeLog¶
Noteworthy Changes¶
Misc / Common¶
- debian packages now have
-docsub-packages containing the corresponding user and VTY reference manuals of each program. - various robustness fixes
- support LAPDm payloads with more than 200 bytes
- fsm: Allow millisecond granularity in osmo_fsm built-in timer
- CBSP (Cell Broadcast Service Protocol) implementatin in libosmogsm
- vty parser fixes: don't pass incomplete arguments to vty funcs
- work around gcc bug with gcc < 7.3.0 on ARM related to thread-local storage
- shared IPA keep-alive FSM in libosmocore; use it wherever possible
- libosmo-netif Stream client: fix disconnection logic
OsmoTRX¶
- new protocol (TRXDv1) support, mainly for passing C/I value from TRX->BTS->PCU for rate adaptation
- proper counting of under/overruns
- LimeSuite stability improvements (recovery / re-synchronization after drop-outs)
- various internal refactoring / code de-duplication
- fix ARM VFP4 convolution
- LimeSuite: automatic detection of device type and device specific gains
OsmoBTS¶
- Various Abis OML protocol conformance fixes
- handling of GPRS SUSPEND (from DCCH -> PCU)
- Full CBCH (Cell Broadcast Channel) support, both basic and extended
- RSL CBCH LOAD INDICATION for CBCH flow control
- RSL BS POWER CONTROL support
- Fix RACH load percentage computation
- clear GPRS indicator form SI3 when PCU is not connected
- fix (so far ignored) MS power control in RSL CHANNEL ACTIVATION
- osmo-bts-oc2g specificx
- systemd service file + example config installation
- status LED fixes
- nominal transmit power fix
- generate failure event report if calibration data missing
- osmo-bts-trx specifics
- TRXDv1 protocol support
- 11-bit RACH support
OsmoBSC¶
- Various AMR rate handling related fixes between AoIP and Abis
- AMR: Signal usage of octet-aligned or bandwith-efficient mode to MSC
- various inter-BSC hand-over related fixes for AoIP
- various manual updates, including documentation for 3G/4G neighbor cells, OSMUX, ...
- always default to octet-aligned AMR mode
- keep per-BTS statistics about RACH utilization
- re-introduce support for IPA-encapsulated MGCP (used with osmo-bsc_nat)
- OSMUX support with AoIP (we only supported it with SCCPlite so far)
- support assigning TCH/x in signaling mode
OsmoMSC¶
- Add SGs interface for CSFB (circuit switched fall-back) and SMS-over-SGs
- various SMS and USSD handling related fixes
- include libsmpp34 memory allocations in talloc reports
- Fix SMS transmission over Iu (use SAPI3)
- allow user to disable retrieval of IMEISV early
- allow transmission of IMEI to HLR (for subscriber-create-on-demand)
- support inter-BSC hand-over
- support inter-MSC hand-over
- do not force encryption on UTRAN/Iu
- OSMUX support with AoIP
OsmoHLR¶
- document
--db-upgradecommand line argument - optionally store IMEI in subscriber table (for non-standard subscriber-create-on-demand)
- support routing of GSUP messages between clients (MSCs) for inter-MSC hand-over
OsmoMGW (and libosmo-mgcp-client)¶
- Add config option to use RFC5593 for GSM HR frames (we normally use ETSI TS 101318 format)
- SDP parsing related fixes
- Support OSMUX configuration via MGCP (activated via BSC and MSC)
osmo-sip-connector¶
- support international Caller-ID
- support emergency calling
- handle SIP re-invite
- support MNCC HOLD/RETRIEVE
OsmoSTP (and libosmo-sigtran)¶
- enable statsd export
- fix bug when saving config file (pointcode+mask of route)
- enable memory usage debugging via talloc introspection
OsmoSGSN¶
- various parser correctness imporvements for LLC
- send Iu Release Command upon Attach Complete
- send Service Reject when no PDP contexts available
- fix GTP echo behavior
- require GMM authentication by default
OsmoGGSN (and libgtp)¶
- various PCO handling related improvements/fixes
- minimalistic PAP support during PDP context activation
- fix missing GTP-C re-transmission
- Introduce new pdp APIs (and deprecate old ones) to support multiple GSN
Binary packages for Debian unstable + testing, Ubuntu 19.04
Thanks to the great support of the OpenSuSE Build Service, Osmocom is now offering binary package feeds for Debian unstable, Debian testing and Ubuntu 19.04.
Binary packages for Raspbian 9
Thanks to the great support of the OpenSuSE Build Service, Osmocom is now offering binary package feeds for the popular Raspbian distribution, Version 9.
As a result, running Osmocom CNI (Cellular Network Infrastructure) on Raspbery Pi embedded computers is easier than ever: Just add the Latest_Builds
or Nightly_Builds feed to /etc/apt/sources.list[.d] and run your Osmocom based 2G and/or 3G cellular network.
New Osmocom Cellular software versions released!
The Osmocom project has released new version of the CNI (Cellular Network Infrastructure) software, including OsmoTRX, OsmoBTS, OsmoBSC, OsmoMGW, OsmoMSC, OsmoHLR, OsmoSGSN, OsmoGGSN.
Those new tagged/released versions contain half a year of work since the previous versions released during summer 2018. The primary focus was on bug-fixing and stabilization as well as some major new features, such as inter-BSC-handover support in osmo-bsc.
You can find pre-compiled binary packages of our latest release for a variety of Debian and Ubuntu GNU/Linux versions at Latest_Builds.
List of tagged versions and link to related ChangeLog¶
Noteworthy Changes¶
Misc¶
- the asciidoc source of the user manuals + VTY reference manuals is now always kept inside the respective repository: osmo-bts.git contains the osmo-bts manual. Before this, we used to have all manuals in osmo-gsm-manuals.git.
- logging vty: deprecate the 'everything' keyword
- various logging related improvements
- various improvements of osmo_fsm
- new osmo-config-merge utility
- SGsAP protocol encoding/decoding (SGsAP not yet part of osmo-msc!)
- GSMTAP definitions for LTE RRC and NAS sub-types
- introduce osmo_timerfd support as part of libosmocore (recurring timers)
OsmoTRX¶
- Introduce OsmoTRX user manual
- Direct support of LimeSuite as
osmo-trx-lmswithout the detour of uhd+soapy-uhd+soapysdr - split device-specific parts into their own classes + binaries: osmo-trx-{uhd,lms,usrp1}
- make better use of diferent logging sub-systems / log levels
OsmoBTS¶
- various correctness fixes related to advanced SACCH FILL scenarios with different SI5/SI6 per channel/subscriber
- various fixes to bit-rotten CBCH support; related generalization
- CBCH support for osmo-bts-trx
- extend precision of TOA mesaurement reports to 1/256 symbol duration
- make RTP port range configurable
- extensive fixes on correctness of computed + reported measurement reports
- Fix build against gpsd >= 3.18
- Allocate TRX for BTS dynamically, deprecate "-t" command line option
- Initial support for OpenCellular OC-2G BTS model/PHY
OsmoBSC¶
- inter-BSC hand-over support (AoIP and SCCPlite)
- large refactoring: use FSMs for lchans; timeslots; MGCP endpoints; ...
- Implement RR Classmark Enquiry in case
- various LCLS related fixes
- various codec / channel type related fixes during ASSIGNMENT
- interop tested against 3rd party MSCs for both AoIP and SCCPlite
OsmoMSC¶
- Implementation of MSC-originated CLASSMARK inquiry procedure for MS/UE without early classmark sending to allow A5/3 encryption
- mncc: fix byte ordering of IP-Address in mncc
- various improvements on state introspection via VTY
- forward SS / USSD messages via GSUP to HLR rather than processing it in MSC
- optional forward of SMS via GSUP to/from HLR rather than using internal SMSC
- fix Classmark Update without VLR subscriber
- vty: add SCCP related vty commands
- GSUP client: send CN domain IE on LU request
- vty: add command to show all known BSC
OsmoHLR¶
- Add GSUP message router
- Add concept of Internal (IUSE) and external (EUSE) USSD handlers
- Implement handling of USSD received from OsmoMSC via GSUP
- Introduce shared libosmo-gsup-client library for client programs connecting to OsmoHLR (like OsmoMSC, OsmoSGSN).
OsmoMGW (and libosmo-mgcp-client)¶
- Remove libosmo-legacy-mgcp and osmo-bsc-mgcp (they live in deprecated openbsc.git)
- various OSMUX related fixes
- use IETF-allocated port number for call-agent side as default
- introduce the concept of payload type maps
- rewrite/translate payload type numbers as per the ptmap
- make MGCP parser more tolerant (and interoperable)
- add extensive statistics / counters and improve VTY introspection
osmo-sip-connector¶
- various logging improvements (more strings, less numbers)
- better SIP/MNCC cause mapping
OsmoSTP (and libosmo-sigtran)¶
- make SCCP timers configurable (required for some SCCPlite peers)
- osmo-stp: add SCCP related VTY commands
- allow less characters for SCCP address book entries
- skip simple-client default as/asp when saving VTY config
- fix ipa_asp_fsm down state transition
OsmoSGSN¶
- gprs_gmm: introduce a GMM Attach Request FSM
- sgsn_ggsn_ctx_drop_pdp: protect against nullpointer when MM is gone
- gprs_gmm: dont answer unknown IMSI/TMSI on Service Requests NET_FAIL
- gprs_gmm: Fix missing Security Command for 3G when attaching
- sgsn_libgtp: fix a potential memleak when the GGSN is not reachable
- gb_proxy: Add ctrl interface and nsvc-state, gbproxy-state commands
- osmo-sgsn: ping GGSN periodically and check for restart counter
- Disarm T3395 when dettaching mmctx from pdpctx
- sgsn: cdr: Fix uninitialized string access if ggsn is detached
- gbproxy: Add VTY parameter: link stored-msgs-max-length
- gbproxy: Add new VTY-managed timer: link-list clean-stale-timer
- Remove local libgsupclient; Use libosmo-gsup-client from osmo-hlr
OsmoGGSN (and libgtp)¶
- ggsn: ctrl iface: listen on IP configured by VTY
- gtp: Allow recv DEL CTX REQ in sgsn and DEL CTX RSP in ggsn
- gtp: Log ignore CTX DEL REQ due to no teardown and only 1 ctx active
- gtp: Add new API to avoid freeing pdp contexts during DEL CTX REQ
- fix support for multiple IPCP in PDP protocol configuration options
New Osmocom Cellular software versions released!
The Osmocom project has released new version of the CNI (Cellular Network Infrastructure) software, including OsmoBTS, OsmoBSC, OsmoMGW, OsmoMSC, OsmoHLR, OsmoSGSN, OsmoGGSN.
Those new tagged/released versions contain half a year of work since the previous versions released in early November 2017. The primary focus was on bug-fixing and stabilization. Many bugs were introduced during the split of the NITB into individual network elements during 2017, and even more bugs exposed by our ever-growing test coverage, particularly in the Osmocom TTCN-3 test suites.
All-in-all, the post-NITB stack has gained a lot in terms of spec compliance, robustness, stability and features during this period.
You can find pew-compiled binary packages of our latest release for a variety of Debian and Ubuntu GNU/Linux versions at
Latest_Builds.
The developer performing the release related work was Pau Espin. Thanks!
List of tagged versions and link to related ChangeLog¶
Noteworthy Changes¶
Misc¶
- GnuTLS fall-back for obtaining randomness
- support for three-digit MNC throguhout the code-base
- add talloc introspection via VTY
- tighter CRTL input parsing
- stricter VTY config file parsing
- allow to print only basename of source code file in logging
- print log level with color-keying of the level name
OsmoTRX¶
- OsmoTRX has now a VTY interface and uses Osmocom-style logging + config file
- use GNU autotest, like other osmocom projects
- re-introduce support for USRP1 devices
- build multiple binaries rather than selecting UHD / USRP1 at compile time
- EFR decoding fixes
- fix dynamic detection/use of CPU optimization (SSE3 vs SSSE3)
- various parsing/encoding fixes for trx-control interface
- add example config file for USRP B200
OsmoBTS¶
- higher accuracy reporting of time of arrival
- fix LAPDm UA memory leak
- put useful information into RTCP SDES packets
- fix AMR DTX FSM related crash
- many fixes related to measurement processing + reporting
- more robust RSL message parsing + error reporting
- implement DELETE INDICATION on AGCH overflow
- fix crashes in IPA DLCX processing
- fix operation without System Information Type 1
OsmoBSC¶
- support all types of Cell Identifier Lists in BSSMAP PAGING
- fix intra-BSC hand-over (used to work in NITB)
- fix various error paths in hand-over logic
- introduce new "handover 2" algorithm from Andreas Eversberg
- introduce load-based hand-over to balance channel load between overlapping BTSs
- implement SI2ter + SI2bis rest octets
- switch to osmo-mgw for handling media/user plane (instead of old osmo-bsc_mgcp)
- introduce osmo_fsm for subscriber_connection
- reduce several GSM timers to more reasonable default values (T3113, T3109, T3101, ...)
- permit codec list with both TCH/F and TCH/H channels
- permit network supporting more than one A5 cipher
- fix missing L2 pseudo-length in SI5/SI6 messages
- introduce Access Control Class (ACC) ramping to deal with overload situations on network power-up
- switch to "late assignment" by default (we used to do early / very early assignment)
- many fixes related to 3GPP spec / protocol compliance
OsmoMSC¶
- fix various use-after-free in GSUP and CC
- fix GSM-MILENAGE in presence of 2G keys
- cancel all paging on IMSI DETACH
- many fixes related to 3GPP spec / protocol compliance
- permit network supporting more than one A5 cipher
- properly pass bearer capabilities between MNCC and CC
- switch to osmo-mgw for handling media/user plane (instead of old osmo-bsc_mgcp)
- use dynamic MGCP endpoint allocation using wildcard
- migrate away from openssl to new libosmocore rand abstraction
- fixes related to SMS validity time
- delete expired SMS automatically
- fix transmission of MM INFO messages
- fix SMS to non-local subscriber
OsmoHLR¶
- fix various crashes
- fix response to PURGE_MS
- notify GSUP clients (MSC, SGSN) when HLR subscriber information changes
OsmoMGW (and libosmo-mgcp-client)¶
- Introduce osmo_fsm client API
- various fixes of SDP parser
- significantly improved compliance with MGCP spec
- wildcarded endpoint allocation in CRCX
osmo-sip-connector¶
- integrate libsofia-sip logging with libosmocore logging
- add systemd service file
OsmoSTP (and libosmo-sigtran)¶
- fix various memory leaks
- introduce IPA/SCCPlite support (allows translation of SCCPlite to M3UA/SUA)
OsmoSGSN¶
- fix some crashes
- migrate away from openssl to new libosmocore rand abstraction
- fix display of GTP addresses in VTY
OsmoGGSN (and libgtp)¶
- re-introduce support for kernel GTP acceleration (was temporarily removed when migrating from OpenGGSN)
- fix byte-order of IPCP IPv4 DNS server addresses
- add support for IPv4v6 End User Addresses
- Validate packet src addr from MS
- various sgsnemu fixes
Osmocom nightly + latest feeds for Ubuntu 18.04
As Ubuntu 18.04 (Bionic Beaver) has been released two days ago, Osmocom has enabled Binary_Packages builds for this new distribution in both nightly and latest. As a result, you can now use our binary package feeds on this most recent incarnation of Ubuntu just like on the other supported distributions.
This was relatively easy due to the openSUSE Build Service (OBS) immediately adding support for Ubuntu 18.04. so all we had to o is enable it, and fix up some minor failures. Thanks to OBS for making supporting new distributions very easy!
Newspaper article on Osmocom based GSM networks in Mexico
The German newspaper Süddeutsche Zeitung has just published an article about how Rhizomatica provides rural cellular telephony in Oaxaca, Mexico using the Osmocom cellular-infrastructure projects.
You can read the (German) article here
2017 Osmocom Cellular Infrastructure Review
Osmocom Review 2017¶
This is a review of the most significant changes and events in the Osmocom Cellular Infrastructure projects in 2017
January 2017¶
- announce of first ever public OsmoCon conference in April
- osmo-bts
- Add Abis OML failure event reporting
- fix memory leaks in osmo-bts-{sysmo,lc15} at every channel activation
- openbsc/osmo-bsc
- support multiple UARFCNs in SI2quater
- osmo-hlr
- add test suite for 2G and 3G authentication
- fix UMTS AKA re-sync
February 2017¶
- weekly manual testing with related weekly test reports to mailing list
- heads-up about the (lack of a )future of osmo-nitb
- heads-up about libosmo-sccp SIGTRAN work
- sysmo-usim-tool
- libosmo-abis
- unix domain socket support (for Ericsson L2TP)
- osmo-bts
- fix AMR HR DTX FSM logic
- fix SACCH sending fo system information with enum value > 7
- osmo-bts-trx: fix RXGAIN and POWER parameters on second TRX
- fix TCH/H interleaving table bit position
- sysmoBTS 1020/1100: slow power ramp-up on TRX enable
- osmo-sgsn
- fix PDP context activation memory allocation bug
- integrate support for UMTS AKA
- openggsn
- fix kernel-gtp tunnel creation/removal for GTPv1
- release 0.93
March 2017¶
- cgit improvements (about page, change-ID hyperlinks, issue hyperlinks)
- Add README.md files to all our repositories
- libosmocore
- migrate gsm 05.03 coding from OsmoBTS to libosmocore
- fix SQN / SEQ handling in UMTS AKA
- 3GPP AoIP message encoding/decoding
- libosmo-abis
- fix ever-increasing jitter buffer
- libosmo-netif
- handle SCTP in in stream server
- doxygen documentation on stream an datagram modules
- osmo-bts
- octphy: CBCH support
- include MS timing offset in RSL measurements
- osmo-sgsn
- handle IMSIs with leading zeroes
- osmo-bsc
- fix T3186 encoding in SI13
- Improved Ericsson OM2000/RBS2000 support
- new ctrl2soap proxy in python
- osmo-hlr
- add CTRL interface
- fix SQN/SEQ handling in UMTS AKA
April 2017¶
- update of coding style for longer line lengths
- OsmoCon2017 and OsmoDevCon2017
- libosmocore
- libosmo-netif
- fix file descriptor leak in error paths
- work around linux kenrel SCTP bug with sender_dry_events
- RTP marker bit support
- libosmo-sccp
- Add new [[libosmo-sigtran:]] library with SS7 AS/ASP Link/Linkset handling, M3UA support, new FSM based SCCP implementation
- Add osmo-stp program
- osmo-bts
- inform BSC of PCU disconnect
- fix measurement reporting period
- exclude idle channels from uplink measurement processing
- octphy: measurement reports
May 2017¶
- libosmocore
- fix embedded builds
- import and generalise 'sercomm' from osmocom-bb into libosmocore
- SSE optimized convolutional coder
- fix wrong GSM FR codec SID frame generation
- doxygen docs for libosmocoding
- osmo-bsc
- TS 04.14 mobile station side loop control
- osmo-bts
- consistently check all RSL and OML TLVs for minimum length value
- fix bit-order in every HR codec parameter (spec compliance)
- OML get/set attribute handling
- SI2quater support
- bypass radio link timeout for lab testing
- osmo-bsc
- PCU socket support for BSC-colocated PCU for Ericsson RBS2000
- reelase 1.0.1
- M3UA and SUA testing as part of jenkins
- osmo-gsm-tester produces successful runs with NITB as well as new AoIP
June 2017¶
- libosmocore
- doxygen autobrief
- doxygen documentation for libosmogb
- osmo-bts
- use CLOCK_MONOTONIC timer for GSM frame timer
- PDTCH loopback support
July 2017¶
- Plan for openbsc.git split and code review
- libosmocore
- PDP charging characteristics in GSUP
- PRBS sequence generators
- multicast IP related helper functions
- 'make release' target
- libosmo-sccp
- SCCP address book
- osmo-bts
- new virtual BTS
osmo-bts-virtualfor testing without radio hardware - don't send dummy UI frames on unused BCCH slots on TC=5
- GSMTAP: don't log/send fill frames consisting of only padding
- new virtual BTS
- osmo-hlr
- change to default GSUP port 4222
August 2017¶
- Support for SMPP Delivery Receipt / GSM03.40 Status Report
- Jenkins now executing M3UA, SUA and GGSN testsuite
- libosmocore
- fix crash in lapd_est_req()
- libosmo-abis
- release 0.4.0
- osmo-bts
- osmo-bts-trx: fix MS power control loop
- release 0.6.0
- support sending/removing SI13 to/from PCU
- osmo-bsc
- indicate R99+ MSC in SI3 to enable UMTS AKA over GERAN
- osmo-sgsn
- properly report GERAN/UTRAN mode in PDP CTX ACT REQ to GGSN
- osmo-msc
- implement IuCS support
- split openbsc.git into osmo-bsc.git, osmo-msc.git and osmo-sgsn.git
- openggsn
- Add IPv6 address pool and IPV6 user (inner) plane support
- release 0.94
September 2017¶
- libosmocore.git
- 'show talloc-context' VTY introspection
- CTRL parsing unit tests
- unification of vty exit/end commands
- osmo-hlr
- CTRL interface tests
- openggsn
- various cleanups and conversion to osmocom style/apis
- fork osmo-ggsn from openggsn; obsolete openggsn
- osmo-ggsn
- release 1.0.0
- allow enable/disable of G-PDU sequence numbers on ggsn and sgsnemu
- sgsnemu: Add IPv6 PDP context support
October 2017¶
- new 'osmocom:latest' package feed
- libosmocore.git
- major doxygen documentation re-work / completion
- dynamic registration of CTRL node-ids by applications
- ability to bind Gb interface to specific IP
- enforce CTRL-capable identifiers in osmo_fsm and counter group names
- release of 0.10.0 + 0.10.1
- add
osmo_get_rand_id()function with getrandom() and GnuTLS fallback
- libosmo-netif.git
- release 0.1.0 and 0.1.1
- libosmo-sccp.git
- release 0.8.0 and 0.8.1
- osmo-bts
- don't require gsm_data_shared.[ch] from openbsc.git anymore
- fix multiple subsequent SI1quater BCCH FILLING from BSC
- fix AMR DTX FSM name to avoid invalid characters in name/identifier
- release 0.7.0
- osmo-bsc
- release 1.1.0, 1.1.1 and 1.1.2
- osmo-hlr
- replace/reimplement CTRL interface commands
- release 0.1.0
- osmo-sgsn
- release 1.2.0
- osmo-msc
- release 1.1.0, 1.1.1 and 1.1.2
- ensure we default to enable TMSI allocation
- osmo-ggsn
- release 1.1.0
November 2017¶
- LimeSDR support in osmocom package feeds
- Add SPDX License identifiers in library projects
- libosmocore
- fix SSE3 optimization on non-SSSE3 machines
- fix memory leaks in various unit tests for memory leak ebugging
- add counter group introspection via CTRL
- release 0.10.2
- libosmo-netif
- fix another file descriptor leak in stream server implementation
- libosmo-sccp.git
- osmo-bts
- don't abort if oversized RTP packets are received
- osmo-bsc
- migrate from osmo-bsc_mgcp to osmo-mgw for switching user plane
- more SI2quater fixes
- report per-BTS connection state and uptime in VTY + CTRL
- osmo-ggsn
- various improvements in kernel GTP support
December 2017¶
- libosmocore
- improvements of XML export for VTY command reference generation
- osmo-bts
- put useful information in RTCP SDES
- osmo-bsc
- move lots of counters / KPIs from BSC level down to per-BTS granularity
- reduce T3101 default from 10s to 3s
- generate mandatory SI2bis and SI2ter rest octets (on RSL; Um was always fine)
- reduce T3113 from 60s to 10s
- various new per-BTS counters
- osmo-msc
- SMS database related fixes
- properly set permitted ciphering algorithms in BSSMAP Cipher Mode Command
- fix GSM-Milenage in presence of 2G keys
- osmo-ggsn
- fix byte order in IPCP IPV4 DNS server addresses
Osmocom operates GSM/UMTS network at 34C3
A team of Osmocom volunteers has continued the tradition of operating an experimental test network at the annual Chaos Communication Congress 34C3 held in Leipzig (Germany) from December 27 through December 30, 2017.
You can find some more information about this network at the GSM page in the 34C3 wiki and the report by tsaitgaist as part of the 34C3 infrastructure review (from minute 35 onwards of http://live.dus.c3voc.de/relive//34c3/8911/muxed.mp4)
Osmocom thanks- Deutsche Telekom for providing us with 3 ARFCN in the 1800 MHz band
- Bundesnetzagentur for providing the experimental license for UMTS in the 850 MHz band
- The team of volunteers working on the setup and operation of the network
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