trx output power config in bts

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Vadim Yanitskiy axilirator at
Sun Dec 13 22:06:12 UTC 2020

> osmotrx tx-attenuation (oml|<0-50>)
> So why do we need these «max_power_red 20» and «osmotrx tx-attenuation»

AFAIU, 'osmotrx tx-attenuation' in osmo-bts.cfg allows you to override
the attenuation value sent by the BSC. It should be set to 'oml' by
default, meaning that the BSC controls attenuation (via A-bis/OML).

P.S. This mailing list is more about the mobile side of the GSM stack,
not core network. Please use openbsc at for questions
about radio/core network side next time.

With best regards,
Vadim Yanitskiy.

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