DISA on ACM 5.2

[sibuor]

Hello techies,

Can someone kindly point me to a tutorial for configuring DISA service on Avaya Communications Manager v5.2.x?

I am looking for something that works more like VM Pro in IP Office where I dial a number, get prompted for a short code, which the system then dials, and such short code is either a local extension or an short code mapped to an off-switch number

Thank you.