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Chapter 3 – Supported GSM/WCDMA AT Commands
High Speed HSPA-H4 AT Commands Reference Guide (Document S000483A) 136
+CSQ Signal Quality
Description: This command is used to read the received signal strength indication (<rssi>) and the
channel bit error rate (<ber>) with or without a SIM card inserted.
Syntax:
Command Responses
Action Command:
AT+CSQ
+CSQ: <rssi>,<ber>
OK
No Read and Test Commands
Values: <rssi>: Received Signal Strength
0 -113 dBm or less
1 -111 dBm
2 to 30 -109 to -53 dBm
31 -51dBm or greater
99 not known or not detectable
<ber>: Channel Bit Error Rate
0…7 as RXQUAL values (GSM 05.08 [10])
99 not known or not detectable
Parameter Storage: None
Examples:
Command Responses
AT+CSQ
+CSQ: 17,1
OK
+CSSN Supplementary Service Notifications
Description: This command configures the supplementary service related network initiated notifications.
Syntax:
Command Response
Action Command:
AT+CSSN= <n>, <m>
OK
Read Command:
AT+CSSN?
+CSSN: <n>,<m>
OK
Test Command:
AT+CSSN=?
+CSSN: (list of supported <n>s), (list of supported <m>s)
OK
Intermediated Response: +CSSI: <code1>[,<index>]
Unsolicited Response: +CSSU: <code2>[,<index>[,<number>,<type>] ]
Values: <n> MO Supplementary Service Notification
0 Disable. Default
1 Enable
When a supplementary service notification is received after a mobile
originated call setup, intermediate result code +CSSI is sent before any
other MO call setup result codes.
<m> MO Supplementary Service Notification
0 Disable
1 Enable
When a supplementary service notification is received during a call,
unsolicited result code +CSSU is sent.
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