Quectel EC25 Command Manual page 46

Maximum Response Time
Parameter
<bandval>
<ltebandval>
<tdsbandval>
<effect>
EC25&EC21_AT_Commands_Manual
+CME ERROR: <err>
300ms
A hexadecimal value that specifies the GSM and WCDMA frequency band. If it
is set to 0, it means not to change GSM and WCDMA frequency band. (e.g.:
00000013=00000001(GSM900)+00000002(GSM1800)+00000010(WCDMA
2100))
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
A hexadecimal value that specifies the LTE frequency band. If it is set to 0 or
0x40000000, it means not to change LTE frequency band. (e.g.: 0x15=0x1(LTE
B1)+0x4(LTE B3)+0x10(LTE B5))
0x1 (CM_BAND_PREF_LTE_EUTRAN_BAND1)
0x4 (CM_BAND_PREF_LTE_EUTRAN_BAND3)
0x10 (CM_BAND_PREF_LTE_EUTRAN_BAND5)
0x40 (CM_BAND_PREF_LTE_EUTRAN_BAND7)
0x80 (CM_BAND_PREF_LTE_EUTRAN_BAND8)
0x80000(CM_BAND_PREF_LTE_EUTRAN_BAND20)
0x7FFFFFFFFFFFFFFF(CM_BAND_PREF_ANY)
A hexadecimal value that specifies the TD-SCDMA frequency band. If it is set to
0 or 0x40000000, it means not to change TD-SCDMA frequency band. (e.g.:
0x21=0x1(TDS BCA)+0x20(TDS BCF))
0x1 (CM_BAND_PREF_TDS_BANDA)
0x2 (CM_BAND_PREF_TDS_BANDB)
0x4 (CM_BAND_PREF_TDS_BANDC)
0x8 (CM_BAND_PREF_TDS_BANDD)
0x10 (CM_BAND_PREF_TDS_BANDE)
0x20 (CM_BAND_PREF_TDS_BANDF)
When to take effect
0 Take effect after UE reboots
LTE Module Series
EC25&EC21 AT Commands Manual
LTE B1
LTE B3
LTE B5
LTE B7
LTE B8
LTE B20
Any frequency band
TDS BCA
TDS BCB
TDS BCC
TDS BCD
TDS BCE
TDS BCF
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