[asterisk-dev] [LibPRI] Question on Charging indicator forwaded in Bridged channel

[Klaus Darilion]

Currently Asterisk supports encoding/decoding of AOC IEs, but they are 
not used. One of the problems is in bridged scenario:

PBX                   Asterisk                  Telco
----DISCONNECT------->
                               ----DISCONNECT--------->
<---RELEASE-----------
----RELEASE COMPLETE->
                               <---RELEASE with AoC-E--
                               ----RELEASE COMPLETE--->

Once the AoC-E arrives from the trunk, the bridge is not available any 
more as the other channel was already cleared - thus the AoC-E can not 
be forwarded.

To fix this the architecture of Asterisk must be changed to clear the 
bridged channel after receiving RELEASE.

I once made a patch which remembers the last received AoC-D and fakes 
AoC-E using the last received value. This is not always 100% correct, 
but it works:
http://bugs.digium.com/view.php?id=7494

regards
klaus

Bernard Merindol(TNE) schrieb:
> Hi All,
> 
> I works in French and I have Asterisk iPBX placed in "iPBX on midle" 
> from Telco and forward to old Alcatel PBX.
> 
> I have problem with IE 36 ISDN indication. This message is not forwaded 
> on bridged call. When I see the code in pri_facility.c I see:
> 
>                case ROSE_AOC_AOCE_CHARGING_UNIT:
>                         return aoc_aoce_charging_unit_decode(pri, call, 
> (u_int8_t *)comp, comp->len + 2);
>                         if (0) { /* the following function is currently 
> not used - just to make the compiler happy */
>                                 aoc_aoce_charging_unit_encode(pri, call, 
> call->aoc_units); /* use this function to forward the aoc-e on a bridged 
> channel */
>                 return 0;
>                         }
> 
> 
> Someone an idea why "aoc_aoce_charging_unit_encode" is encapsuled in if 
> (0) and is not executed ?
> 
> Thank for your help.
> 
> Best regards
> Bernard Merindol
> 
> 
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