[asterisk-users] Asterisk in debian Wheezy 1.8.13.1 vs. Squeeze 1.8.23.1

[Thomas]

Hello,

in Squeeze Asterisk 1.8.23.1 is installed, in Wheezy older version 
1.8.13.1~dfsg1-3+deb7u3.

With version 1.8.13.1 I have some problems so I would like to install version 
1.8.23.1 used in Squeeze whats running fine for me.

How I can do this?

thanks for help

Thomas