Multitech MultiModem Cell MTCBA-C1 Guía de usuario Pagina 47

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Chapter 10 – Network Service Commands
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide (PN S000478C) 47
Signal Quality Unsolicited Response for +CSQ:
The Signal Quality (CSQ) unsolicited response is reported whenever the signal quality changes
by a predetermined threshold. See +CCED for enabling and disabling this result. This unsolicited
response may also be suppressed by using the +WUSLMSK command.
Response Syntax: +CSQ: <rssi>, <fer>
Result Example
+CSQ: 31,99
Note: Signal quality is now -51 dBm or greater.
Frame error rate is unknown.
Values:
<rssi> Received signal strength indication.
<fer> Frame error rate.
Network Registration & Roaming +CREG
Description: This command is used by the application to ascertain the registration and roaming status of the
product.
Syntax: Command syntax: AT+CREG= <mode>
Response syntax: +CREG: <mode>, <stat>
Command Possible Responses
AT+CREG=0
Note: Disable network registration
unsolicited result code.
+CREG: 0,1
OK
Note: Command valid
AT+CREG=1
Note: Enable network registration
unsolicited result code
+CREG: 1,1
OK
Note: Command valid
AT+CREG? +CREG: 1,5
OK
Note: Unsolicited enabled, MS currently roaming.
AT+CREG=? +CREG: (0-1)
OK
Note: 0,1 <mode> values are supported
Note: Example of the unsolicited result
code. MS is searching for a base station.
+CREG: 2
Values: <mode>
0 Disable network registration unsolicited result code (default)
1 Enable network registration unsolicited code result code +CREG: <stat>
<stat>
0 not registered; MS is not currently searching for a new operator
1 registered; home network
2 not registered; MS currently searching for a base station
4 unknown
5 registered; roaming
Persistence: The unsolicited response mode setting is not persistent unless written using the AT&W
command. AT&F resets the CREG mode to the default value.
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