[asterisk-dev] HANGUPCAUSE is not passed over IAX2

[Anton]

Hi Men!

Anyone know how to get ${HANGUPCAUSE} passed over IAX2? I've 
HANGUPCAUSE=31 on the PRI box, but HANGUPCAUSE=0 on the 
IAX2 dialing side. ASTERISK 1.2.12.1

BOX1 < - (IAX2) - >  BOX2 <-(PRI)-> PSTN

I need to handle HANGUPCAUSE got from BOX2 on BOX1 but i 
have only DIALSTATUS which is not enough.

Any help highly appreciated,
Anton.