Digi TX54 User Manual page 113

Interfaces
To unlock a SIM card:
1. Log into the TX54 command line as a user with Admin access.
Depending on your device configuration, you may be presented with an Access selection
menu. Type admin to access the Admin CLI.
2. At the Admin CLI prompt, use the
card:
> modem puk unlock puk_code new_pin modem_name
>
For example, to unlock a SIM card in the modem named wwan1 with PUK code 12345678, and
set the new SIM PIN to 1234:
> modem puk unlock 12345678 1234 wwan1
>
3. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
Note If the SIM remains in a locked state after using the unlock command, contact your cellular
carrier.
Signal strength for cellular connections
See Show cellular status and statistics
Signal strength for 4G connections
For 4G connections, the RSRP value determines signal strength.
Excellent: > -90 dBm
n
Good: -90 dBm to -105 dBm
n
Fair: -106 dBm to -115 dBm
n
Poor: -116 dBm to -120 dBm
n
No service: < -120 dBm
n
Signal strength for 3G and 2G connections
For 3G and 2G cellular connections, the current RSSI value determines signal strength.
Excellent: > -70 dBm
n
Good: -70 dBm to -85 dBm
n
Fair: -86 dBm to -100 dBm
n
Poor: < -100 dBm to -109 dBm
n
No service: -110 dBm
n
Tips for improving cellular signal strength
If the signal strength LEDs or the signal quality for your device indicate Poor or No service, try the
following things to improve signal strength:
TX54 User Guide
modem puk unlock command to set a new PIN for the SIM
for procedures to view this information.
Wide Area Networks (WANs)
113