Installation guide

Rev 1.1 9/22/14 39

Getting Started

Troubleshooting the USR3500

Error Code

Diagnosis

Hint

Requested facility not subscribed

Check your subscription. (Is data subscription

available?)

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.