How to announce to callers about his/her call queue status

Dear All,

incoming calls being placed in the queue, how to announce to callers about
his/her call queue status (ie. you are in no. 8 of our call queue … and it’s counting down reflect
to the real-time the call in queue status, ie. you are in no. 7, 6 … etc)

could anybody please help?

many thanks in advance

Regards
Winanjaya

What version of FreePBX are you using?

oops, sorry I forgot to inform the version …
I am running Asterisk 1.8.6.0 and FreePBX 2.9.0.7

I tried to Add Queue as follow:

Capacity Options -> Max callers = 0
Caller Position Announcements -> set Frequency = 15 seconds
Caller Position Announcements -> Annount position = yes
Caller Position Announcements -> Announce hold time = yes

Fail Over Destination -> Terminate Call = Hangup

but no luck

any idea?