[Asterisk-Users] Problem with PSTN

[Wilson Pickett]

> I want to use this to call on to a Telecom line(PSTN) and vice versa. I read
> somewhere that we need to use some provider for it like FWD or iconnect, do
> we need to use them to make outgoing and incoming calls to PSTN lines or we
> can do it without them.

Try reading these articles:
http://www.onlamp.com/pub/a/onlamp/2003/07/03/asterisk.html
http://www.onlamp.com/pub/a/onlamp/2004/01/22/asterisk2.html

>I don't know what should I put in the .conf files so
> that it enables these calls.

Download and print the available PDFand read it a few times
http://www.asteriskdocs.org

All the answers to your current questions (and more) are there.