Benetel RAN 650 not receiving PRACH messages from the UE

[hnavidan]

Hello,

We have a problem with the integration of srsRAN with Benetel RAN650 O-RU. Following the walkthrough in the docs and using the same configuration, the UE can scan the network, but can not attach to it due to PRACH timeout. I suspect the problem is with the O-RU receiving the RACH messages and transmitting them to the DU, as in the OFH logs, it shows that no RACH message from the UE was received while the UE is transmitting them.

I've attached the DU and RU configuration that we're using. The same setup works perfectly fine with USRP.

from the gNB logs:

• PRACH: pci=1 format=B4 nof_occasions=1 nof_preambles=64
  2025-10-22T12:14:47.067016 [OFH ] [D] Registering PRACH context entry for slot '138.19' and sector#0
  2025-10-22T12:14:47.070258 [OFH ] [D] Sector#0: notifying incomplete PRACH in slot '138.19'

Benetel firmware version: RAN650-1v1.4.0-NM-5561771

configs.zip