RFC Function Call - System not available

Hello,
in my own program i´m using an RFC function call to get data out of our BW - System like this:
CALL FUNCTION 'RRW3_GET_QUERY_VIEW_DATA' DESTINATION i_dest
    EXPORTING
      i_query               = i_query
      i_view_id             = i_view_id
      i_t_parameter         = i_t_parameter
    IMPORTING
      e_axis_data           = gt_axis_data
      e_cell_data           = e_cell_data
    EXCEPTIONS
      system_failure        = 1
      communication_failure = 2
      OTHERS                = 3.
This works fine and fast as long the BW System is up and running. If the BW system is for some reason down my program has very bad performance because this RFC function call is trying for about 10 seconds every time.
Is there a way to avoid this long waiting time? A kind of parameter?
If there is no answer after one or two seconds the programm should continue.
Any ideas for this?
Thanks a lot.
Best regards
Manfred

try the following like look for TTL(time to live) in the doc
http://www.google.co.in/url?sa=t&source=web&cd=5&ved=0CDkQFjAE&url=http%3A%2F%2Fwww.erpgenie.com%2Fsapgenie%2Fdocs%2FSAP%2520Connectors.doc&rct=j&q=ttl%20for%20rfc%20call%20in%20sap%20abap&ei=DShnTv7VGYbWrQeYgPXcCg&usg=AFQjCNGvnINnxj8kYx9IeelUHy0dQPmuMA&cad=rja

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