Hi Jean-Marc,
On 11/29/23 16:33, jheyrendt.ext(a)orange.com wrote:
Hi
We set up a full Osmocom platform, with an Ettus USRP for SDR. All works
well. Congratulations to Osmocom developers !
But now we want to use "real" nodes concerning MSC, MGW, HLR, SGSN & GGSN.
Not sure what do you mean with "real" here. Have I been living in some
imaginary world until now when using osmocom software?
Do you perhaps mean you want to interop with nodes from other vendors
perhaps? If that's your question, yes it's possible, there are known
setups of osmocom software running against Quortus, Ericsson, Huawei,
etc. CNs.
Do you think it is possible ?
What exactly?
Concerning the BSC-MSC association, do we need to use an SG (osmo-stp) ?
or could we establish a Point To Point BSC-MSC ? SUA ?
We don't yet support IPSP in osmocom, so you need to configure your node
and the peer as SG or ASP.
Concerning MGW, is there a way to use our MGW ? At this time, with
Osmocom corposants, we can see RTP traffic between BTS-TRX and MGW, and
some MGCP traffic between (BSC - local MGW) and MGW, and some MGCP
traffic between osmo-MGW and osmo-MSC. Is there a way to have a "more
standard" architecture: no traffic between BTS and MGW, and MGW
controlled by MSC ? Do we have to more study TRAU, AoIP ?
Not sure what you mean by "more standard architecture here. I believe
the architecture we use is a generally standard AoIP setup.
Only thing that resembles what you mention seems to be an SCCPlite setup
instead of AoIP? We do support SCCPlite in osmo-bsc too, but we still
use an osmo-mgw colocated with osmo-bsc there.
In any case, the MSC co-located MGW can be whatever MGW the MSC chooses
to use.
We didn't test any other MGW implementation using MGCP against our
osmo-bsc/osmo-msc (does it exist?)
The only one I know has been tested is iirc a Quortus MSC in SCCPlite
mode sending MGCP to our osmo-bsc, which is then forwarded to its
co-located osmo-mgw.
Concerning the Gb, do you think that it 'll work if we configure the Gb
on a real SGSN connected to the osmo-pcu, hosted on the osmo-bts-trx?
Again, if by "real" you mean some SGSN from another vendor (eg.
Ericsson), then yes, there are known cases of working setups AFAIR.
Regards,
Pau
--
- Pau Espin Pedrol <pespin(a)sysmocom.de>
http://www.sysmocom.de/
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