UMTS/HSPA Module Series
WCDMA UGxx AT Commands Manual
WCDMA_UGxx_AT_Commands_Manual Confidential / Released 34 / 247
Parameter
1. If a fixed baud rate is set, make sure that both TE (DTE, usually external processor) and TA (DCE,
Quectel module) are configured to the same rate.
2. If IPR is set to 0, it will change module to auto baudrate.
3. The value of AT+IPR cannot be restored with AT&F or ATZ.
4. A selected baud rate takes effect after the write commands are executed and acknowledged by
"OK".
Example
AT+IPR=115200 //Set fixed baud rate to 115200
OK
AT+IPR?
+IPR: 115200
OK
3.5. AT+QRIR Restore Ring Line to Inactive
If the behavior of ring line is "always", you should restore ring line to inactive by AT+QRIR. The behavior
of ring line is controlled by AT+QCFG. Please refer to AT+QCFG="urc/ri/ring", AT+QCFG="urc/ri/other"
and AT+QCFG="urc/ri/smsincoming".
<rate> Baud rate of per second
0
300
1200
2400
4800
9600
19200
38400
57600
115200
230400
460800
921600
3000000
6000000
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