Westermo GS-01 - Manual (Page 14)

14 6195-2201
Network service commands
+CSQ – Signal Quality
This command shall be used to know the received signal strength indication (<rssi>) and
the channel bit error rate (<ber>) with or without any SIM card inserted.
<rssi>:
0: –113 dBm or less
1: –111 dBm
2...30: –109 to –53 dBm
31: –51dBm or greater
99: not known or not detectable
<ber>:
0...7: as RXQUAL values in the table GSM 05.08
99: not known or not detectable
Application to GSM AT+CSQ
GSM to application +CSQ: <rssi>,<ber> <rssi> and <ber> as defined
OK before
+CREG – Network registration
This command is used by the application to know the registration status of the mobile.
Command syntax: AT+CREG= <mode>
Response syntax: +CREG: <mode>, <stat> [ ,<lac>,<ci> ]
for AT+CREG? command only
<mode>
0: Disable network registration unsolicited result code (default)
1: Enable network registration code result code +CREG: <stat>
2: Enable network registration and location information unsolicited
result code +CREG: <stat>,<lac>,<ci> if there is a change of the network cell.
<stat>
0: not registered, ME is not currently searching a new operator
1: registered, home network
2: not registered, ME currently searching a new operator to register to
3: registration denied
4: unknown
5: registered, roaming
<lac>: string type; two byte location area code in hexadecimal format
(e.g. ”00C3” equals 193 in decimal)
<ci>: string type; two byte cell ID in hexadecimal format
Application to GSM AT+CREG?
GSM to application +CREG: <mode>,<stat> as defined before
OK