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Created page with "Frequency bands can be locked with the '''AT+QCFG=“band”''' command. The syntax for the command looks like this: gsmctl -A 'AT+QCFG=“band”[,<bandval>,<ltebandval>,<t..."
Frequency bands can be locked with the '''AT+QCFG=“band”''' command. The syntax for the command looks like this:
gsmctl -A 'AT+QCFG=“band”[,<bandval>,<ltebandval>,<tdsbandval>[,<effect>]]'
Where:
<ul>
<li>'''<bandval>''' - a hexadecimal value that specifies the GSM and WCDMA frequency band. Possible values are:
<pre>00000000 No change
00000001 GSM900
00000002 GSM1800
00000004 GSM850
00000008 GSM1900
00000010 WCDMA 2100
00000020 WCDMA 1900
00000040 WCDMA 850
00000080 WCDMA 900
00000100 WCDMA 800
00000200 WCDMA 1700
0000FFFF Any frequency band</pre>
</li>
<li>'''<ltebandval>''' - A hexadecimal value that specifies the LTE frequency band. Possible values are:
<pre>0 No change
0x1 (CM_BAND_PREF_LTE_EUTRAN_BAND1) LTE BC1
0x4 (CM_BAND_PREF_LTE_EUTRAN_BAND3) LTE BC3
0x10 (CM_BAND_PREF_LTE_EUTRAN_BAND5) LTE BC5
0x40 (CM_BAND_PREF_LTE_EUTRAN_BAND7) LTE BC7
0x80 (CM_BAND_PREF_LTE_EUTRAN_BAND8) LTE BC8
0x800000 (CM_BAND_PREF_LTE_EUTRAN_BAND20) LTE BC20
0x40000000 No change
0x1a0000800d5 (CM_BAND_PREF_ANY) Any frequency band</pre>
</li>
<li>'''<tdsbandval>''' - a hexadecimal value that specifies the TDS-CDMA frequency band. Possible values are:
<pre>0 No change
0x1 (CM_BAND_PREF_TDS_BANDA) TDS BCA
0x2 (CM_BAND_PREF_TDS_BANDB) TDS BCB
0x4 (CM_BAND_PREF_TDS_BANDC) TDS BCC
0x8 (CM_BAND_PREF_TDS_BANDD) TDS BCD
0x10 (CM_BAND_PREF_TDS_BANDE) TDS BCE
0x20 (CM_BAND_PREF_TDS_BANDF) TDS BCF
0x40000000 No change</pre>
</li>
<li>'''<effect>''' - specifies when to take effect. Possible values are:
<pre>0 Take effect after reboot
1 Take effect immediately</pre>
</li>
</ul>
<ol>
<li>First, shut down the mobile WAN interface
<pre>ifdown ppp</pre>
</li>
<li>Select the desired bands. </li>
<li>Milk</li>
</ol>
1. Stop mobile data connection:
Example:
gsmctl -A 'AT+QCFG="band",0,40,0,1'
3. Start mobile data connection:
ifup ppp
Additionally:
To read used frequencies:
gsmctl -A 'AT+QCFG="band"'
+QCFG: "band",0xd3,0x40,0x0
To read used frequencies in words format:
gsmctl -A AT+QNWINFO
to set exact bands:
gsmctl -A 'AT+QCFG="band",0,40,0,1'
OK
Multiple frequencies at one time:
It's not force one band, when you use AT+QCFG="band" and set
any combinations of band you need to use, for <ltebandval> 1800 is band 3,
and it's config is 4, and 2600 is band 7, it's config is 40, so you sum this
two and it will be 44, so you need to set <ltebandval> as 44.
Any frequency:
0x1a0000800d5
Additionally i'm attaching AT commands manual if there is any information missing.
gsmctl -A 'AT+QCFG=“band”[,<bandval>,<ltebandval>,<tdsbandval>[,<effect>]]'
Where:
<ul>
<li>'''<bandval>''' - a hexadecimal value that specifies the GSM and WCDMA frequency band. Possible values are:
<pre>00000000 No change
00000001 GSM900
00000002 GSM1800
00000004 GSM850
00000008 GSM1900
00000010 WCDMA 2100
00000020 WCDMA 1900
00000040 WCDMA 850
00000080 WCDMA 900
00000100 WCDMA 800
00000200 WCDMA 1700
0000FFFF Any frequency band</pre>
</li>
<li>'''<ltebandval>''' - A hexadecimal value that specifies the LTE frequency band. Possible values are:
<pre>0 No change
0x1 (CM_BAND_PREF_LTE_EUTRAN_BAND1) LTE BC1
0x4 (CM_BAND_PREF_LTE_EUTRAN_BAND3) LTE BC3
0x10 (CM_BAND_PREF_LTE_EUTRAN_BAND5) LTE BC5
0x40 (CM_BAND_PREF_LTE_EUTRAN_BAND7) LTE BC7
0x80 (CM_BAND_PREF_LTE_EUTRAN_BAND8) LTE BC8
0x800000 (CM_BAND_PREF_LTE_EUTRAN_BAND20) LTE BC20
0x40000000 No change
0x1a0000800d5 (CM_BAND_PREF_ANY) Any frequency band</pre>
</li>
<li>'''<tdsbandval>''' - a hexadecimal value that specifies the TDS-CDMA frequency band. Possible values are:
<pre>0 No change
0x1 (CM_BAND_PREF_TDS_BANDA) TDS BCA
0x2 (CM_BAND_PREF_TDS_BANDB) TDS BCB
0x4 (CM_BAND_PREF_TDS_BANDC) TDS BCC
0x8 (CM_BAND_PREF_TDS_BANDD) TDS BCD
0x10 (CM_BAND_PREF_TDS_BANDE) TDS BCE
0x20 (CM_BAND_PREF_TDS_BANDF) TDS BCF
0x40000000 No change</pre>
</li>
<li>'''<effect>''' - specifies when to take effect. Possible values are:
<pre>0 Take effect after reboot
1 Take effect immediately</pre>
</li>
</ul>
<ol>
<li>First, shut down the mobile WAN interface
<pre>ifdown ppp</pre>
</li>
<li>Select the desired bands. </li>
<li>Milk</li>
</ol>
1. Stop mobile data connection:
Example:
gsmctl -A 'AT+QCFG="band",0,40,0,1'
3. Start mobile data connection:
ifup ppp
Additionally:
To read used frequencies:
gsmctl -A 'AT+QCFG="band"'
+QCFG: "band",0xd3,0x40,0x0
To read used frequencies in words format:
gsmctl -A AT+QNWINFO
to set exact bands:
gsmctl -A 'AT+QCFG="band",0,40,0,1'
OK
Multiple frequencies at one time:
It's not force one band, when you use AT+QCFG="band" and set
any combinations of band you need to use, for <ltebandval> 1800 is band 3,
and it's config is 4, and 2600 is band 7, it's config is 40, so you sum this
two and it will be 44, so you need to set <ltebandval> as 44.
Any frequency:
0x1a0000800d5
Additionally i'm attaching AT commands manual if there is any information missing.
