asterisk users - May 2006 - Commands possible in the h extension, message delivery with confirmation

Hi,

I've been using Asterisk for several months now with great success.

I'm working on a system that tries to deliver a recorded message to a user,
as follows:

1. a call file is placed in /var/lib/asterisk/outgoingcalls
2. This triggers a call to be placed
3. When answered, the caller hears the recorded message
4. After the message, the caller must confirm by pressing 1
5. If they confirm, the process ends
6. If they just hang up, wait
7. After waiting, dial them again and go to step 3 above

The idea is that the system persists in trying to deliver the message, not
quitting until they press '1' on their keypad after hearing the recorded
message. I plan to extend this to try several different users in rotation until
confirmation is received.

I need to re-dial the user if they hang up, or time out, or are busy. For
hang-up, I have tried using the h extension, like this:

h,1,Dial(local/201)

To test re-dialling on hangup. However, the dial takes place too soon after the
previous call, resulting in an error from the target phone.

When I change it to:

h,1,Wait(3)
h,2,Dial(local/201)

This gets no further than the Wait command, and * never executes the Dial
command.

Can this be made to work reliably? Or should I write some sort of AGI script to
provide a reliable message delivery application to do this instead?

I'm using Asterisk 1.2.4 on Centos 4.

Thanks,

Jeremy Tucker
Network Manager     
regs4ships Ltd.
?
Tel: +44 (0)870 444 1240
Fax: +44 (0)23 8022 8029
Email: jeremy.tucker@regs4ships.com 
Web: www.regs4ships.com
Skype: jez_r4s
?
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