Dear team could you pls help me with this question In bts config we have following entries: trx 0 nominal power 23 ! to use full TRX power, set max_power_red 0 max_power_red 20 and osmotrx tx-attenuation (oml|<0-50>) So why do we need these «max_power_red 20» and «osmotrx tx-attenuation» which both as i understand weaken the signal? If we want to have a weak signal why we just don’t use only «nominal power» with whatever weak or strong signal value we want? -- Mario Lucas
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@lists.osmocom.org for questions about radio/core network side next time.
With best regards, Vadim Yanitskiy.
baseband-devel@lists.osmocom.org
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Mario Lucas -
Vadim Yanitskiy