Bs11 problem on startup.

Hello list, I have a problem with BS11 at startup: When I put the BS11 voltage and that I connect in serial and I run: ./bs11_config-p / dev/ttyUSB0 query I like the result: PHASE 1: unknown Abis-link: Down PHASE 1: unknown Abis-link: Down PHASE 1: unknown Abis-link: Down PHASE 1: unknown Abis-link: Down PHASE 1: unknown Abis-link: Down PHASE 1: unknown Abis-link: Down PHASE 1: unknown Abis-link: Down constantly and eternally ...... Any idea?? thank you