User guide

28
6615-2203
+CSQ – Received signal strength
Syntax:
AT+CSQ.
Response syntax:
+CSQ: <RSSI>, <BER>
Parameters:
<RSSI>
0 –113 dBm or less.
1 –111 dBm.
2 to 30 –109 to –53 dBm.
31 –51 dBm or greater.
99 Not known.
<BER>
0 BER < 0.2%
1 0.2% < BER < 0.4%
2 0.4% < BER < 0.8%
3 0.8% < BER < 1.6%
4 1.6% < BER < 3.2%
5 3.2% < BER < 6.4%
6 6.4% < BER < 12.8%
7 BER > 12.8%
99 Not known.
&D – DTR control
TSyntax:
AT&Dn
<n>
0 The DTR signal is ignored.
1 Modem switches from data to command mode when DTR swtches from
ON to OFF.
2 An active call is released when DTR switches from ON to OFF.
E – Character echo
Syntax:
ATEn
Parameters:
<n>
0 Echo off.
1 Echo on.