Moxa OnCell G2151I [19/48] Pin code management

OnCell G2111/G2151I Series AT Command Set

3-4

bits, and no flow control). Type AT and press Enter. A modem response of OK indicates that the modem is

ready.

Verify Signal Strength

Connect the RS-232 port of the OnCell G2111/G2151I Series modem to a host PC. Open PComm Terminal

Emulator with the current communication parameters (default: 115200 bps, 8 data bits, None parity, 1 stop

bits, and no flow control). Type AT+CSQ and press Enter. The modem will respond with the receive signal

strength (RSSI) and channel bit error rate (BER).

Signal Strength Verification

0 to 12 Weak or insufficient

13 to 19 Average

20 to 31 Exceptional

99 No signal

BER ranges from 0 to 7, with 7 corresponding to a higher error rate.

ATTENTION

RSSI should be higher than 12 if you wish to create or accept GSM

/CSD data calls or establish a GPRS

connection. If the RSSI is less than 12, you will only be able to transmit and receive SMS (short message).

To check the bit error rate there must be a call in progress to obtain realistic values. If no call is set up, there

is no

BER to be determined. In this case the indicated value may be 0 or 99, depending on the SIM card.

PIN Code Management

Operation of the OnCell G2111/G2151I Series modem requires the installation of an active SIM (Subscriber

Identity Module) card. The SIM card contains the necessary data to identify the modem to the network service

provider. It is also used to store the GSM/GPRS modem PIN (Personal Identification Number.) and PUK

(Personal Unblocking Key), which are also used with mobile phones. The PIN helps prevent unauthorized