Hello,
I see that currently openBSC/osmoBSC works with a number of old commercial BTS such as Ericsson/Nokia/Siemens etc. It works over E1/Abis. My question is, did somebody try something newer than Nokia UltraSite? I have an ability to try with FlexiBTS rel.3 with Abis over IP. I'm trying to find out if maybe it was already tried and had some unresolveable problems? Please let me know if any.
Thank you Ivan
Hi Ivan,
Yes, we developed an adaption layer between Nokia IUA (packet Abis) and Osmo BSC. This was working well enough for basic signaling and 1st call.
However, we abandoned that design when we realized that we would have a lot of work, fixes and refactoring to do in the Osmo BSC to support the scalability of the Nokia platform. In the Nokia Flexi 2G architecture, TRXes and most other resources of the BTS are defined and instantiated based on signaling instructions from the BSC.
We developed our own 2G mobile core from scratch and we’re quite happy with it. It has already been commercially launched in a live, nationwide network.
I can send you a copy of the adaption layer if you’re interested. It may be able to bring your BTS online – but you will likely find that the path is generally a bit futile.
Best Regards,
Michael Andersen
mob5g.net
From: OpenBSC openbsc-bounces@lists.osmocom.org On Behalf Of Ivan Babanov Sent: Wednesday, 19 August, 2020 10:25 To: openbsc@lists.osmocom.org Subject: openBSC with commercial BTS
Hello,
I see that currently openBSC/osmoBSC works with a number of old commercial BTS such as Ericsson/Nokia/Siemens etc. It works over E1/Abis. My question is, did somebody try something newer than Nokia UltraSite? I have an ability to try with FlexiBTS rel.3 with Abis over IP. I'm trying to find out if maybe it was already tried and had some unresolveable problems? Please let me know if any.
Thank you
Ivan
Hello Michael,
Thank you for your reply. I'd really appreciate it if you could send me your adaptation layer software. I'm a postgraduate student of The Saint-Petersburg University of Telecommunications and we are building a laboratory of Radio Systems for practical study of radio access technologies. So we do not need commercial functionality, stability or scalability, we need just an ability to show working with real hardware and ability to make some simple configurations and L3 calls.
Thank you Ivan
ср, 19 авг. 2020 г. в 11:43, Michael Andersen mia@mob5g.net:
Hi Ivan,
Yes, we developed an adaption layer between Nokia IUA (packet Abis) and Osmo BSC. This was working well enough for basic signaling and 1st call.
However, we abandoned that design when we realized that we would have a lot of work, fixes and refactoring to do in the Osmo BSC to support the scalability of the Nokia platform. In the Nokia Flexi 2G architecture, TRXes and most other resources of the BTS are defined and instantiated based on signaling instructions from the BSC.
We developed our own 2G mobile core from scratch and we’re quite happy with it. It has already been commercially launched in a live, nationwide network.
I can send you a copy of the adaption layer if you’re interested. It may be able to bring your BTS online – but you will likely find that the path is generally a bit futile.
Best Regards,
Michael Andersen
mob5g.net
*From:* OpenBSC openbsc-bounces@lists.osmocom.org *On Behalf Of *Ivan Babanov *Sent:* Wednesday, 19 August, 2020 10:25 *To:* openbsc@lists.osmocom.org *Subject:* openBSC with commercial BTS
Hello,
I see that currently openBSC/osmoBSC works with a number of old commercial BTS such as Ericsson/Nokia/Siemens etc. It works over E1/Abis. My question is, did somebody try something newer than Nokia UltraSite? I have an ability to try with FlexiBTS rel.3 with Abis over IP. I'm trying to find out if maybe it was already tried and had some unresolveable problems? Please let me know if any.
Thank you
Ivan
Dear Ivan,
On Wed, Aug 19, 2020 at 11:24:30AM +0300, Ivan Babanov wrote:
I see that currently openBSC/osmoBSC works with a number of old commercial BTS such as Ericsson/Nokia/Siemens etc. It works over E1/Abis. My question is, did somebody try something newer than Nokia UltraSite?
We have just made current OsmoBSC + OsmoMGW work with the Ericsson RBS6000, specifically with the DUG10 + DUG20 models. If you use 'master' of all of Osmocom (or the nightly builds, for that matter) and the config file examples from https://git.osmocom.org/osmo-bsc/tree/doc/examples/osmo-bsc/ericsson it should work. Of course you have to make sure that your MCTR configuration / number of TRX / transmit power levels / ARFCNs etc. match the capability of your hardware and the IDB that's installed in the DUG.
Hello Harald,
Thank you for information, Is my understanding correct that in your case RBS6000 connected via E1?
Thank you Ivan
чт, 20 авг. 2020 г. в 14:45, Harald Welte laforge@osmocom.org:
Dear Ivan,
On Wed, Aug 19, 2020 at 11:24:30AM +0300, Ivan Babanov wrote:
I see that currently openBSC/osmoBSC works with a number of old
commercial
BTS such as Ericsson/Nokia/Siemens etc. It works over E1/Abis. My
question
is, did somebody try something newer than Nokia UltraSite?
We have just made current OsmoBSC + OsmoMGW work with the Ericsson RBS6000, specifically with the DUG10 + DUG20 models. If you use 'master' of all of Osmocom (or the nightly builds, for that matter) and the config file examples from https://git.osmocom.org/osmo-bsc/tree/doc/examples/osmo-bsc/ericsson it should work. Of course you have to make sure that your MCTR configuration / number of TRX / transmit power levels / ARFCNs etc. match the capability of your hardware and the IDB that's installed in the DUG.
--
- Harald Welte laforge@osmocom.org
 ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)
Dear Ivan,
On Mon, Aug 24, 2020 at 12:34:10PM +0300, Ivan Babanov wrote:
Thank you for information, Is my understanding correct that in your case RBS6000 connected via E1?
This is correct. Our primary E1 interface so far has been the Digium (now Sangoma) cards with the DAHDI Linux driver. However, Sylvain has recently created an open source hardware + open source software USB E1 adapter. This adapter is already fully supported by osmo-bsc / libosmo-abis via osmo-e1d. Related hardware should soon become available.
In case you were wondering about IP based back-haul: Some years ago we also created an implementation of "Packet Abis over IP", which is wha the Ericsson SIU / TCU are speaking towards the BSC. The related code can be found in the osmo-el2tpd repository. However, it was for a proof of concept at the time, and only signaling plane + packet data was tested, not any voice services.
It should not be too much effort to take this from the proof-of-concept state (remove hard-coded IP addresses, ...) and fully integrate that into OsmoBSC/MGW/PCU. As usual, sysmocom is very happy to work in that area.
If I'm not mistaken, the more recent RBS6000 digital units for GSM (DUS31, DUS41, ...) speak the same L2TP derived "Packet Abis over IP", but we have no experience with those as of yet.
Regards, Harld