TLS / ast_tls_cert

Hello,

I have a Free PBX 2.7 running at a location that I’m hoping to set up as a conference bridge. The pbx it’s connecting to (Avaya CM 1.3) has to use TLS, and I’m having trouble making a certificate for this link. The document in the url below describes a process relative to the ast_tls_cert, but I’m unable to find that script or the contrib/scripts directory.

http://ofps.oreilly.com/titles/9780596517342/asterisk-OutsideConn.html

Any thoughts on this?

Thanks!
D.