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Why does the show cellular info RSSI command return the value 0 after the SIC-3G line card is inserted?

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Post time 2017-5-4 15:55:28 | Show all posts |Read mode
Why does the show cellular info RSSI command return the value 0 after the SIC-3G line card is inserted?
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 Author| Post time 2017-5-4 15:55:59 | Show all posts
Possible causes:
  • The network condition of your operator is abnormal.
  • No SIM card is inserted to the line card.
  • The SIM card is in arrears.
  • The antenna is improperly connected or is broken.

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