How to play an audio file in Asterisk if the lines are busy?

Question

Asterisk

Hello!
There is a number 89222 connected to the Asterisk
When calling to this number, the calls are transferred to the internal number.
Can you please tell me how to play an auto-answer caller and put him in a queue?
As I understand it, check to compare DIALSTATUS using the expression ?

Answer 1

Queue command
read the queues.conf config - there are settings for voice announcements

Answer 2

You can check in advance through ChanIsAvail(), you can use SIPPEER(${EXTEN},curcalls), you can after trying to dial through DIALSTATUS.

Answer 3

Google is for the weak, right?) A great example is here: asterisk.ru/knowledgebase/Asterisk+cmd+goto