I've been studying and reading a LOT on IP Phones, SIP providers and Asterisk. I need a simple setup for a small business office:
[*] 1 Phone number for incoming calls (DID)
[*] 4 IP Phones for 4 people
[*] Ability to have individual voicemails
[*] Ability to make multiple outbound calls, and receive multiple inbound calls at once on occasion.
If I understand everything correctly, I need to:
[*] Purchase a plan from a SIP Provider with multiple channels (to make multiple calls at once), from some place like axvoice.com?
[*] Purchase a computer and install Asterisk, and setup asterisk with the SIP provider details.
[*] Purchase IP Phones, and connect the phones to the Asterisk server. (Similar to as shown here (??): http://sysadminman.net/blog/2011/using-a-ciscolinksys-spa-504g-with-asterisk-and-freepbx-2714
[*] Setup extensions in Asterisk to handle the incoming calls.
Is this correct? I feel like I almost have it all figured out... I just have to actually get to doing it. But I'd hate to get everything purchased and setup... only to find that I missed one detail or something doesn't work like I thought it did.
Thanks for any help!