Questions on OSMOCOM & real nodes integration

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. Do you think it is possible ? 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 ? 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 ? 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? Many thanks in advance, Best regards Jean-Marc Orange Restricted