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wlraider70
April 29th, 2012, 03:45 AM
My church has a really old phone system with no voice mail. My goal is to look into the feasibility of setting up a PBX with VoIP internally and PSTN for external use.

So my question is simply tell me if my proposition below makes any sense and what I have missed. There are a lot of terms I don't recognize, so If used the wrong acronym let me know.


1) Setup an asterisk server to route calls from phone to phone. I may use PBX in a Flash. http://pbxinaflash.com/ Does asterisk run on top of Ubuntu?

2) The church has 2-4 PSTN phone lines, which requires a telephony PCI card in the server to utilize.
Can I use something like this, Linksys PAP2-NA VoIP Adapter. http://www.voiplink.com/Linksys_PAP2_NA_p/linksys-pap2-na.htm

3) Setup some soft-phones as Proof of concept such as
http://www.3cx.com/VOIP/voip-phone.html
Final step is deploying (cheap) SIP phones.


THANKS

rubylaser
April 29th, 2012, 11:57 AM
PBX in a Flash works great. I use it at home and at our Church. We have 4 POTS lines and 5 SIP trunks. In both cases, I used Digium TDM11B (http://www.digiumcards.com/digium_cards_combos.html) cards with (4) FXO modules to connect the POTS lines to the computer.

Check out the Nerdvittles site (http://nerdvittles.com/), they cover a bunch of very interesting PBX in a Flash ideas. Also, their suggested phone is the LG-NORTEL H.264 IP 1535 NTEX02BAE6 SIP VIDEO IP PHONE (http://www.ebay.com/itm/LG-NORTEL-H-264-IP-1535-NTEX02BAE6-SIP-VIDEO-IP-PHONE-/330506306014?pt=LH_DefaultDomain_0&hash=item4cf3b601de#ht_2972wt_1141).

Ubuntu certainly supports installing Asterisk, I used to do this with Debian, but PBX in a Flash is so fast to setup, that's what I use now. That Linksys adapter won't work, that's for connecting old POTS telephones. What you need is FXO ports to connect to the old POTS phone lines.

volkswagner
April 29th, 2012, 02:23 PM
For running Asterisk with FreePBX you may want to have a look at freedoh.net (http://www.freedoh.net/freedoh.html).

There is a script for installing all the bits you need to get up and running, using Debian or Ubuntu.

The script author (Marcus Brown) recommends Debian.

I have just deployed the Cisco SPA-303 (http://www.newegg.com/Product/Product.aspx?Item=N82E16833150103) phones for $91 ea. which are an excellent mid-grade device for your IP phones.

wlraider70
April 30th, 2012, 04:17 PM
Is there a difference between POTS, plain old telephone system and PSTN. Are they analog?

Also since I am using voip that is my connection to my office phones and the FXO port is the connection to the telephone company.

Thanks for the above help too.

edit: If I have about 8 phones in the office and the server is dedicated to PBX what kind of power should it have.

rubylaser
April 30th, 2012, 05:26 PM
Is there a difference between POTS, plain old telephone system and PSTN. Are they analog?

Also since I am using voip that is my connection to my office phones and the FXO port is the connection to the telephone company.

Thanks for the above help too.

edit: If I have about 8 phones in the office and the server is dedicated to PBX what kind of power should it have.

PSTN = Public Switched Telephone Network which is owned and operated by the telephone company and delivers POTS = Plain Old Telephone Service to you home or business. POTS connections are analog.

The FXO port would be to connect to the POTS line.

Here's a slightly old Asterisk dimensioning guide (http://www.voip-info.org/wiki/view/Asterisk+dimensioning), but it will be good to get you pointed in the right direction.

johnnyvegas
April 30th, 2012, 05:34 PM
These are nice phones -- Looks like E4 has them for 89.00 :guitar:

http://www.8774e4voip.com/SearchResults.asp?Search=Cisco+SPA-303+&Search.x=0&Search.y=0

wlraider70
May 1st, 2012, 07:53 PM
Thanks for all the help, and for the befit of future users

I followed this guide http://nerdvittles.com/?p=795
more info at http://pbxinaflash.net/

I installed Centos, PIAF (Pbx in a flash) and incredible PBX3.0 As I understand it each one sits on top of the previous.

It is extremely easy to configure, thought the install scripts had a few glitches. I have already made soft phone to soft phone calls and soft phone to cell phone via Google voice.

rubylaser
May 1st, 2012, 08:03 PM
PBX in a Flash is great and so much easier than configuring this all by hand like I used to do in the past. Glad you got it working.