Alcatel Unleashed

hi
i need help
i have hunt group with overflow to another hunt group and another 2 hunt the same the total is 4 in a row and in the last one i have overflow to ghost z with an immediate forword
to external # whan i am dialling internal it works good but whan i am dailling external i get busy tone i have to say that it worked for a few weeks and than stop and i dont now why!!!!!

│
│ Node Number (reserved) : 1 │
│ Instance (reserved) : 1 │
│ Directory Number : 6000 │
│ │
│ Directory Name : Help Desk │
│ Domain Identifier : 0 │
│ Type of Hunt Group + PCX Hunt Group │
│ Circular Search Type + Sequential │
│ Release After Timer + False │
│ Overflow Directory Number : 6001 │
│ Authorized Camp on Calls % : 0 │
│ Connection COS : 0 │
│ Public Network COS : 2 │
│ Call Restriction COS : 0 │
│ Unavailable Authorized + True
│
│ Dir.No Assigned to the group : 4008 │
│ │
│ Entity Number : 4 │
│ Priority Group + False │
│ CSTA Routing + False │
│ Preempter + False │
│ CUG List Number : -1 │
│ CUG Incoming Access + False │
│ │
│ Voice Mail │
│ │
│ Voice Mail Number : -------- │
│ Voice Mail Password : 0000 │
│ Language Voice Mail : 1 │
│ │
│ Pickup Private Call + False │
│ External Pickup Call + False │
│ │
└────────────────────────────────────────────────────────────────────────────┘

Check system docs: external call to hunt group follows entity overflow in some conditions.