Siemens MC55 AT manual AT+CSQ Signal quality, At+Csq=?, +CSQ rssi,ber

8.5AT+CSQ Signal quality

The AT+CSQ execute command indicates the received signal strength <rssi> and the channel bit error rate <ber>.

Syntax

Test Command

AT+CSQ=?

Response(s)

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

OK

Exec Command

AT+CSQ

Response(s)

+CSQ: <rssi>,<ber>

OK

Reference(s)

GSM 07.07

PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge  Last

! % % % % % ! ! !

Parameter Description

<rssi>(num)

0	-113 dBm or less
1	-111 dBm
2..30	-109... -53 dBm
31	-51 dBm or greater
99	not known or not detectable

<ber>(num)

To check the bit error rate there must be a call in progress to obtain realistic values. If no call is set up, there is no BER to be determined. In this case the indicated value may be 0 or 99, depending on the SIM card.

0..7	as RXQUAL values in the table in GSM 05.08 section 8.2.4.
99	not known or not detectable

Note

•After using network related commands such as AT+CCWA, AT+CCFC, AT+CLCK, users are advised to wait 3s before entering AT+CSQ. This is recommended to be sure that any network access required for the preceding command has finished.

MC55_ATC_V04.00	Page 171 of 475	3/17/06
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