Multitech MTCBA-C-U-N2 Specifikace stáhnout pdf (Strana 119)

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Chapter 8 – Network Service Commands

Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 119

8.6 AT+CSQ Signal Quality

Description: The AT+CSQ execute command indicates the received signal strength <rssi> and the channel bit

error rate <ber>.

Syntax: Test Command: AT+CSQ=?

Response: +CSQ: (list of supported<rssi>s), (list of supported<ber>s)

Exec Command: AT+CSQ

Response: +CSQ: <rssi>,<ber>

Parameter:

<rssi>

0 -113 dBm or less

1 -111 dBm

2..30 -109... -53 dBm

31 -51 dBm or greater

99 not known or not detectable

<ber>

0..7 as RXQUAL values in the table in GSM 05.08 section 8.2.4.

99 not known or not detectable

Notes:

• After using network related commands such as AT+CCWA, AT+CCFC, AT+CLCK, users are advised to wait 3s

before entering AT+CSQ. This is recommended to be sure that any network access required for the preceding

command has finished.

• This command is not PIN protected.

• This command is not supported in airplane mode.

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