LTE Module Series
EC20 AT Commands Manual
EC20_AT_Commands_Manual Confidential / Released 4 / 219
3.4. AT+IFC Set TE-TA Local Data Flow Control ......................................................................... 33
3.5. AT+IPR Set TE-TA Fixed Local Rate .................................................................................... 34
4 Status Control Commands ............................................................................................................... 36
4.1. AT+CPAS Mobile Equipment Activity Status ......................................................................... 36
4.2. AT+CEER Extended Error Report ........................................................................................ 37
4.3. AT+QCFG Extended Configuration Settings ........................................................................ 38
4.3.1. AT+QCFG="gprsattach" GPRS Attach Mode Configuration ....................................... 39
4.3.2. AT+QCFG="nwscanmode" Network Search Mode Configuration.............................. 40
4.3.3. AT+QCFG="nwscanseq" Network Searching Sequence Configuration ..................... 41
4.3.4. AT+QCFG="roamservice" Roam Service Configuration ............................................ 42
4.3.5. AT+QCFG="servicedomain" Service Domain Configuration ...................................... 43
4.3.6. AT+QCFG="band" Band Configuration ...................................................................... 43
4.3.7. AT+QCFG="hsdpacat" HSDPA Category Configuration............................................. 45
4.3.8. AT+QCFG="hsupacat" HSUPA Category Configuration ............................................ 46
4.3.9. AT+QCFG="rrc" RRC Release Version Configuration ............................................... 46
4.3.10. AT+QCFG="sgsn" UE SGSN Release Version Configuration ................................... 47
4.3.11. AT+QCFG="msc" UE MSC Release Version Configuration ....................................... 48
4.3.12. AT+QCFG="PDP/DuplicateChk" Establish Multi PDNs with the Same APN ............. 49
4.3.13. AT+QCFG="TDSCSQ" Set TDSCDMA RSSI Range ................................................. 50
4.3.14. AT+QCFG="apready" AP Ready Detection Configuration ......................................... 50
5 SIM Related Commands .................................................................................................................... 53
5.1. AT+CIMI Request International Mobile Subscriber Identity (IMSI) ....................................... 53
5.2. AT+CLCK Facility Lock ......................................................................................................... 54
5.3. AT+CPIN Enter PIN .............................................................................................................. 56
5.4. AT+CPWD Change Password .............................................................................................. 58
5.5. AT+CSIM Generic SIM Access ............................................................................................. 59
5.6. AT+CRSM Restricted SIM Access ........................................................................................ 60
5.7. AT+QCCID Show ICCID ....................................................................................................... 61
5.8. AT+QPINC Display PIN Remainder Counter........................................................................ 62
5.9. AT+QSIMDET SIM Card Detection ....................................................................................... 62
5.10. AT+QSIMSTAT SIM Inserted Status Report ......................................................................... 64
6 Network Service Commands ............................................................................................................ 66
6.1. AT+COPS Operator Selection .............................................................................................. 66
6.2. AT+CREG Network Registration ........................................................................................... 68
6.3. AT+CSQ Signal Quality Report ............................................................................................. 70
6.4. AT+CPOL Preferred Operator List ........................................................................................ 72
6.5. AT+COPN Read Operator Names ........................................................................................ 73
6.6. AT+CTZU Automatic Time Zone Update .............................................................................. 74
6.7. AT+CTZR Time Zone Reporting ........................................................................................... 75
6.8. AT+QNWINFO Query Network Information .......................................................................... 76
7 Call Related Commands .................................................................................................................... 79
7.1. ATA Answer an Incoming Call ............................................................................................... 79
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