Hi,

I looked at the forum for answers before posting, but I unfortunately couldn't get answers to what I was looking for. I looked into particular https://www.mail-archive.com/openbsc@lists.osmocom.org/msg09819.html for solving my issue.

Issue: I cannot connect BTS,TRX and BSC. The other modules of the network are able to connect to each other. I have the RSP POWEROFF message originating in log from TRX-UHD module and the BTS module is shuttiing down. BTS connects via OML but fails to connect RSL. I looked through the configuration files and seem correct to me. As per the previous email archive, I wanted to login to VTY and check the logs, but, it logs out as the BTS module shuts down (I cannot connect and see what's happening).

Any suggestions would be appreciated on solving the issue. I am trying to create a test 2G OSMOCOM network. Logs are written below and configuration as attachments.

Thanks for your help!

*OSMO_BTS_TRX log:* systemd[1]: Started Osmocom osmo-bts for osmo-trx. osmo-bts-trx[23221]: <0017> control_if.c:911 CTRL at 127.0.0.1 4238 osmo-bts-trx[23221]: <0010> telnet_interface.c:104 Available via telnet 127.0.0.1 4241 osmo-bts-trx[23221]: <0012> input/ipaccess.c:1024 enabling ipaccess BTS mode, OML connecting to 192.168.0.9:3002 osmo-bts-trx[23221]: <000b> trx_if.c:1174 phy0.0: Open transceiver osmo-bts-trx[23221]: <000b> trx_if.c:185 phy0.0: No satisfactory response from transceiver(CMD POWEROFF) osmo-bts-trx[23221]: <000b> trx_if.c:185 phy0.0: No satisfactory response from transceiver(CMD POWEROFF) osmo-bts-trx[23221]: <000b> trx_if.c:185 phy0.0: No satisfactory response from transceiver(CMD POWEROFF) osmo-bts-trx[23221]: <000b> trx_if.c:185 phy0.0: No satisfactory response from transceiver(CMD POWEROFF) osmo-bts-trx[23221]: <000b> trx_if.c:185 phy0.0: No satisfactory response from transceiver(CMD POWEROFF) osmo-bts-trx[23221]: <000b> trx_if.c:185 phy0.0: No satisfactory response from transceiver(CMD POWEROFF) osmo-bts-trx[23221]: <000d> abis.c:142 Signalling link down osmo-bts-trx[23221]: <0001> bts.c:292 Shutting down BTS 0, Reason Abis close osmo-bts-trx[23221]: <000b> trx_if.c:185 phy0.0: No satisfactory response from transceiver(CMD POWEROFF) osmo-bts-trx[23221]: Shutdown timer expired osmo-bts-trx[23221]: ((*)) osmo-bts-trx[23221]: | osmo-bts-trx[23221]: / \ OsmoBTS

*OSMO_TRX_UHD log:*

osmo-trx-lms[7995]: DTRXCTRL <0001> Transceiver.cpp:773 [tid=140437098583808][chan=0] command is 'POWEROFF' osmo-trx-lms[7995]: DTRXCTRL <0001> Transceiver.cpp:918 [tid=140437098583808][chan=0] response is 'RSP POWEROFF 0'