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<div class="moz-cite-prefix">On 14/12/2020 13:55, Mario Lucas wrote:<br>
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<blockquote type="cite"
cite="mid:1607975752.540721279@f726.i.mail.ru">
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<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter">Dear
team could you pls help me with this question</span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"> </span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr">In
bts config we have following entries:</span></span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr"> </span></span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr">trx
0<br>
nominal power 23<br>
! to use full TRX power, set max_power_red 0<br>
max_power_red 20</span></span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr"> </span>and</span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"> </span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr">osmotrx
tx-attenuation (oml|<0-50>)</span></span></div>
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</blockquote>
<p>^^ This command does not exist in all osmo-bts-* variants.</p>
<p><span style="max-width: 2150px; --left-column-width:232px;
--right-column-width:248px;" class="layout layout_size_l
layout_type_2pane layout_vertical-fit layout_bordered
layout_letter"><span style="max-width: 2150px;"
class="layout_mr_css_attr layout_size_l_mr_css_attr
layout_type_2pane_mr_css_attr layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr"><br>
</span></span></p>
<blockquote type="cite"
cite="mid:1607975752.540721279@f726.i.mail.ru">
<div>
<div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr"> </span></span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr"><br>
</span></span></div>
<div><span style="max-width: 2150px;
--left-column-width:232px; --right-column-width:248px;"
class="layout layout_size_l layout_type_2pane
layout_vertical-fit layout_bordered layout_letter"><span
style="max-width: 2150px;" class="layout_mr_css_attr
layout_size_l_mr_css_attr layout_type_2pane_mr_css_attr
layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr">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?</span></span></div>
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</blockquote>
<p>Somebody else might correct me if I am wrong, but I'm pretty sure
than "nominal power" is only used to calculate informational
reports for the operator, in "show trx" for example.</p>
<p>So after calibration of any RF power attenuation or amplification
equipment connected to your BTS, you might adjust "nominal power"
to reflect that. Then, you might want to control your cell size
from the BSC, with max_power_red</p>
<p>I'm not sure of the origins of the osmotrx commands, nor am I
absolutely sure about the override capabilities of that command,
but I believe that the idea is that if you use osmotrx <span
style="max-width: 2150px; --left-column-width:232px;
--right-column-width:248px;" class="layout layout_size_l
layout_type_2pane layout_vertical-fit layout_bordered
layout_letter"><span style="max-width: 2150px;"
class="layout_mr_css_attr layout_size_l_mr_css_attr
layout_type_2pane_mr_css_attr layout_vertical-fit_mr_css_attr
layout_bordered_mr_css_attr layout_letter_mr_css_attr">tx-attenuation
0, then the bts should ignore attentuation commands sent over
the Abis as a result of having max_power_red in the BSC
config.<br>
</span></span></p>
<p><br>
</p>
<p>This has been discussed before BTW, more than once, I believe,
for example:<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://openbsc.osmocom.narkive.com/2YXqsMED/question-about-ms-max-power-parameter">https://openbsc.osmocom.narkive.com/2YXqsMED/question-about-ms-max-power-parameter</a></p>
<p>even though the title is about ms-max-power there.<br>
</p>
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