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section and use a check based on is_method("BYE") to determine when to execute acc_aaa_request().

This works ok, but it is triggered twice at the end of the call - once for the BYE sent upstream and
again for the BYE sent downstream. The only solution I could find (I've spent many hours testing ideas
for this) is the use of a global flag that is toggled each time the local_route block gets a BYE
method. Then the code only calls acc_aaa_request() when the global flag is set - i.e. only one in
every two times.
  if (is_gflag("1")) {
      acc_aaa_request("Internal BYE");
  }

  # Use Global flag 1 to avoid double reporting/accounting of timeout BYE's
  if (is_gflag("1")) {
      reset_gflag("1");
  } else {
      set_gflag("1");
  }

This is not a very elegant or satisfactory solution but it should just about work and hopefully not
many timeouts will occur anyway. Any suggestions for a better solution would be welcome. I have tried
Dialog values and transaction flags - they don't work.

The other problem is how to end the media proxy session. The transaction flags set for the Invite are
not visible in the local_route block when it is handling the internally generated BYE's so I cannot
try the normal checks that would be used in the main route block for BYE. Perhaps I should just call
end_media_session(), but will it even work from local_route? If I change my script to start using
engage_media_proxy() will I lose the flexibility of being able to check which calls need media proxy
and which don't? I don't want them all using it - only those with far-end NAT.

John Quick
Smartvox Limited