asterisk users - Jul 2012 - chan_ss7 quick patch to enable RBT

Hello everyone,

I am trying to apply
this<http://www.voip-info.org/storage/users/496/27496/images/499/rbt.patch.diff>patch
on chan_ss7-2.1.0 for RingBack tone but its not accepting and
throwing errors:
Hunk #1 FAILED at 704.
Hunk #2 FAILED at 715.

I have done the patch modifications manually in l4isup.c

There is just one question, how do I pass the RB file-to-play on an SS7
channel via asterisk?

--
Thanks.

P.S. here is the source of the patch:
http://www.voip-info.org/wiki/view/chan_ss7+quick+patch+to+enable+RBT
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