[Asterisk-Users] Learn To build IVR

[bino_oetomo]

Dear All.
I'm very new to CT, but attracted by asterisk.
I plan to start learn to build IVR, based on asterisk.

Do I need FXO/FXS card to start building simple IVR box ?
Can I use OEM X100P - FXO PCI Card ( http://www.digitnetworks.com/store/product_info.php?products_id=28 ) to start build an IVR box ?
What is the cheapest FXO PCI card that can use with asterisk to build my first IVR box ?

Is there any step-by-step docs/url in doing this ?

Sincerely
-bino-
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