Multitech MTSGSM, User Manual

Page: 42 / 81

MultiMobile SoftGSM User Guide
MTSGSM 42
+CSQ Signal quality
Syntax AT+CSQ for signal strength
The response is +CSQ: <rssi>,<ber>
AT+CSQ=? for a list of supported values.
The response is +CSQ: (list of supported <rssi>),( list of supported <ber>)
Error codes is returned as +CME ERROR: <err>:
Description The AT+CSQ command returns the signal strength and bit error rate.
Defined values Meaning
<rssi>
0
-113 dBm or less
1 -111 dBm
2.30 -109 to –53 dBm
31 -51 dBm or greater
99 Not known or not detectable
<ber>
0-7
As RXQUAL………….
99 Not known or not detectable
S-Registers
S0 Auto answer ring count
Description Defines the number of rings on an incoming call before the modem tries to answer
the call.
Values Meaning
0 The modem is not answering any incoming calls. This is the default value
1.255 The modem is in autoanswer mode and answer the call of the specified number of
rings.
S1 Ring counter
Description Returns the current ring count. This register counts the incoming ring signals.
S2 Escape character
Description Defines what ASCII character is used for the escape sequence (‘+++’).
Value Meaning
0-255 The ASCII value used for the escape sequence. The default value is 43 which
corresponds to an ASCII ‘+’.
S3 Carriage return character
Description Defines what ASCII character is used for carriage return (end-of-line).
Value Meaning
0-255 The ASCII value used for the carriage return character. The default value is 13 which
corresponds to an ASCII <CR>.
S4 Line feed character
Description Defines what ASCII character is used for linefeed.
Value Meaning
0-255 The ASCII value used for the linefeed character. The default value is 10 which
corresponds to an ASCII <LF>.