Duplicate Messages
If your pager receives a message that is the same as one already stored in memory (read or unread), 
appears when the pager displays the duplicate mes- sage. After you read a duplicate message, the pager saves only one copy of it, showing the most recent time that the message was received.
Tone Only or Unreadable Messages
If your pager receives a message that does not have any numbers, it displays TONE ONLY.
If your pager receives a message that is partially or to- tally unreadable (due to disruption of the paging signal or low signal strength, for example), it displays the un- readable characters as dashes
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