>>384

astAのiax.conf
---------------------------------------------------
[astBuser]
type=friend
host=xxx.xxx.xxx.xxx ←astBのglobal IP
allow=all
username=astBuser
secret=astBsecret
---------------------------------------------------

astAのextention (astBにコール)
Dial(IAX2/astAuser:astAsecret@astBuser/${EXTEN});

astBのextention (astAにコール)
Dial(IAX2/astBuser:astBsecret@astAuser/${EXTEN});

こんな感じになるかと。