[Asterisk-Users] New to IP-PBX

[Duraid Abbas]

Hi,

I'd really appreciate it if you can explain this to me. 

I have a D/41JCT-LS Dialogic board and I want to use it as an IP-PBX.
I'm new to IP Telephony and telephony and general and I researched a lot
but still confused about what I really need.

I know that I can setup an IP-Telephony for my LAN using a SIP server
and SIP compatible software phones. But the challenge is how can I
connect to the PSTN so that I can send and receive calls?

I came through a lot of terms like VoIP gateway and stuff like that but
still don't know what I really need. Can you help?

Thanks in advance

Duraid