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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>

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

+CSSN Supplementary Service Notifications

Description: This command configures the supplementary service related network initiated notifications.

Syntax:

Command Response

Action Command:

AT+CSSN= <n>, <m>

Read Command:

AT+CSSN?

+CSSN: <n>,<m>

Test Command:

AT+CSSN=?

+CSSN: (list of supported <n>s), (list of supported <m>s)

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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