Data Sheet

SIM900 AT Commands Set

SIM900R01_ATC_V1.00 81 15.01.2010

<response> response of a successful completion of the Command

previously issued (hexadecimal character format)

Reference

GSM 07.07

GSM 11.11

Note

3.2.35 AT+CSQ Signal Quality Report

AT+CSQ Signal Quality Report

Test Command

AT+CSQ=?

Response

+CSQ: (list of supported <rssi>s),(list of supported <ber>s)

Response

+CSQ: <rssi>,<ber>

+CME ERROR: <err>

Execution Command returns received signal strength indication <rssi>

and

channel bit error rate <ber> from the ME. Test Command returns values

supported by the TA.

Execution

Command

AT+CSQ

Parameters

<rssi>

0 -115 dBm or less

1 -111 dBm

2...30 -110... -54 dBm

31 -52 dBm or greater

99 not known or not detectable

<ber> (in percent):

0...7 as RXQUAL values in the table in GSM 05.08 [20] subclause 7.2.4

99 not known or not detectable

Reference

GSM 07.07 [13]

Note

3.2.36 AT+FCLASS FAX: Select, Read Or Test Service Class

3.2.37 AT+FCLASS Model Identification

AT+FCLASS Model Identification

Test Command

AT+FCLASS=?

Response

+FCLASS: (list of supported <class>s)