[Asterisk-Users] How to transfer value to extensions.conf?

[Ning Zhou]

Hi, all,
I met a problem for several days, any suggestion is really appreciated!!!  

I'd like to do autodial using Asterisk.

For example, I have a file under /var/spool/asterisk/outgoing, which include:
channel: zap/g1/12345
MaxRetries: 0
RetryTime: 60
WaitTime: 20
Context: default
Extension: 2222
Priority: 1

And in my "extensions.conf" file, I have 
[default]
exten => 2222,1,Dial(Zap/g1/34567,20)
exten => 2222,2,Hangup

Then Asterisk will first dial the 'number 12345, then dial the number
indicted in the exten =>2222 which is 34567, then setup a bridge
between them. That is exactly what I want.

My question is, if I like to transfer some variable to the
extensions.conf, to replace the number 34567, since the number dialed
every time is not a fixed phone number, what should I do?

Really hope you have give me some hints.


BRs,
ning zhou