text: UPDATE cdr
  SET dstchannel='SIP/' + dst,
  channel='SIP/' + src,
  lastdata = '';
  
  UPDATE cdr
  SET dst = abs(random())
  WHERE length(dst) > 3;
  
  UPDATE cdr
  SET src = abs(random())
  WHERE length(src) > 3;
  
  UPDATE cdr
  SET clid = '"' || src || '"' || ' <' || src || '>';
  
  