[ENDLESS LOOP crashes server]

I have posted this issue in the old forum before, there was no reply, user keeps causing endless loop, and I have to be back here.

 

 

OS = Debian 3.1

pbxnsip = 1.5.2.5

 

 

Scenario :

 

Three users in the same domain set call forwarding when busy to each other in a loop way.

 

User 111 when busy ---> User 222 when busy ---> User 333 when busy ---> User 111

 

When the ADSL in this user's premise is down , it causes a endless loop and crashes the pbxnsip.

 

Everytime I delete User 333 when busy ---> User 111, the champion sets it back again.

 

Regards