US Robotics USR3500 Installation Guide Page 39

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Rev 1.1 9/22/14 39
Getting Started
Troubleshooting the USR3500
Error Code
Diagnosis
Hint
50
Requested facility not subscribed
Check your subscription. (Is data subscription
available?)
68
ACM equal or greater than ACMmax
The credit of your pre-paid SIM card has expired.
252
Call barring on outgoing calls
253
Call barring on incoming calls
3, 6, 8, 29, 34, 38,
41, 42, 43, 44, 47,
49, 57, 58, 63, 65,
69, 70, 79, 254
Network causes
Refer to the AT Commands Interface Guide at
http://www.usr.com/support/3500 for further details
or call your network provider.
For all other codes and/or details, refer to the documents listed in section 10.1 Firmware
Documentation.
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