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HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Commands for Network Services
Issue 02 (2010-11-23)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
81
8.4.1 Checking the Parameter Range Supported by This
Command
Test
command
AT+CSQ=?
Function
Returns the parameter range supported by this command.
Response
z
In case of successful execution:
<CR><LF>+CSQ: (list of supported <rssi>s),(list of supported
<ber>s)<CR><LF>
<CR><LF>OK<CR><LF>
z
In case of an error during command execution:
<CR><LF>ERROR<CR><LF>
z
In case of an error related to the MT during command execution:
<CR><LF>+CME ERROR: <err><CR><LF>
Parameter description
<rssi>: receive signal strength indicator
z
0: ≤ -113 dBm
z
1: -111 dBm
z
2...30: -109...-53 dBm
z
31: ≥ 51 dBm
z
99: unknown or immeasurable
<ber>: bit error rate in percentage. The value of ber can be queried only during the
call processing. Otherwise, only the value 0 or 99 is returned. Currently, only the
value 99 is returned.
z
0–7: correspond to the values of RXQUAL in the GSM 05.08 section8.2.4.
z
99: unknown or immeasurable