Duplicate rows

Hello everyone, I need your help.

I’ve this mysql table:

+------------+-------------+------+---------------------+------------------+
| Node       | Description | Zone | XXXXTEL             | Date_Resolution  |
+------------+-------------+------+---------------------+------------------+
| KR10240497 | @TERMX      | KR1O | 998482933-980867854 | 2009-10-12       |
| KR10240497 | @TERMX      | KR1O | 998482933-980867854 | 0000-00-00       |
| KR10227386 | C.B.S.M.    | KR1M | 999073514-981512863 | 2008-11-13       |
| KP60203932 | GNRT        | MO6O | T00000352-803521891 | 2012-06-19       |
| KP60210819 | NAPOLBANKO  | MO6N | T00012472-T00012450 | 2010-04-27       |
+------------+-------------+------+---------------------+------------------+
5 rows in set

I need split value of column ‘XXXXTEL’ and create and insert in this table new row with the second value splitted in column ‘XXXXTEL’.
I need this output, can you help me?

+------------+-------------+------+---------------------+------------------+
| Node       | Description | Zone | XXXXTEL             | Date_Resolution  |
+------------+-------------+------+---------------------+------------------+
| KR10240497 | @TERMX      | KR1O | 998482933           | 2009-10-12       |
| KR10240497 | @TERMX      | KR1O | 980867854           | 2009-10-12       |
| KR10240497 | @TERMX      | KR1O | 998482933           | 0000-00-00       |
| KR10240497 | @TERMX      | KR1O | 980867854           | 0000-00-00       |
| KR10227386 | C.B.S.M.    | KR1M | 999073514           | 2008-11-13       |
| KR10227386 | C.B.S.M.    | KR1M | 981512863           | 2008-11-13       |
| KP60203932 | GNRT        | MO6O | T00000352           | 2012-06-19       |
| KP60203932 | GNRT        | MO6O | 803521891           | 2012-06-19       |
| KP60210819 | NAPOLBANKO  | MO6N | T00012472           | 2010-04-27       |
| KP60210819 | NAPOLBANKO  | MO6N | T00012450           | 2010-04-27       |
+------------+-------------+------+---------------------+------------------+
SELECT node
     , description
     , zone
     , SUBSTRING_INDEX(xxxxtel,'-',1) AS xxxxtel 
     , date_resolution  
  FROM daTable     
UNION ALL
SELECT node
     , description
     , zone
     , SUBSTRING_INDEX(xxxxtel,'-',-1)
     , date_resolution  
  FROM daTable       

thank you.