The first thing you will need to do is to find out the address of your Linksys PAP2 device.
Assuming you have plugged your LinkSys PAP2 in this is quite easy to do.

 

 

A voice will come onto the handset and start reading you numbers which sounds something like "192.168.0.10".
Write down this number ( including the dots ).

Open a web browser on your computer and type this into your browser as: http://192.168.0.10 replacing 192.168.0.10 with the number your wrote down.

You should now be in the configuration menu of your LinkSys PAP 2 device.
Which looks similar to the picture below:

Now you are inside the menu on the far right you will see a link which says "Admin Login" Click this link and you should see a menu like this appear:

You will now need to click on the link which says "Switch To Advanced View"

Your menu should now have grown significantly. Don't worry to much about this we're simply making it possible for us to access the settings we require.

At the top of the menu, click on the word "SIP". You should see a new menu appear.

Scroll down to the black menu on the left that says "RTP Parameters" and set the following below:

Set RTP Packet Size to 0.020

 Scroll right to the bottom of this menu and you should see two settings please set them as below:

Handle VIA received: yes

Handle VIA rport: yes

Insert VIA received: yes

Insert VIA rport: yes

Substitute VIA Addr: yes

Send Resp To Src Port: yes

Set Stun enable to Yes

Set Stun server to stun1.bablio.com

 Now scroll to the top of the page again and click on the "Regional Settings" words.

Set FXS port impedance to 220+820|| 120NF

If you have a phone that shows the Date and Time, you may wish to set Time Zone to "GMT +10:00"

 Now scroll back to the top again and click on the "Line 1" words ( at the very top of the screen ).

Ensure Line Enable is set to Yes

Set NAT Mapping enable to Yes

Set NAT keep alive enable to Yes

Set Proxy to sip.bablio.com.au

Set Register Expires to 300

Set Proxy Fallback Intvl to 300

Set Dial Plan to the Following:

(*xx|000S0|112S0|123S0|121S0|1223S0|1234S0|1100S0|600S0|900S0|09xxxxxxS0|13[1-9]xxxS0|1[38]00xxxxxxS0|[2-9]xxxxxxxS0|0[234578]xxxxxxxxS0|190xxxxxxx!|xx.)