Cisco Linksys PAP2
Posted by HostPBX US on 29 August 2013 02:54 PM

Configuration Details

Step 1

The first step is to find out what IP Address your adapter is currently using. To do this, pick a phone connected on Line 1 and do the following:

Dial: **** (That is 4 asterisks)
Once this is done, dial: 110# (110 followed by a square)

The system should now playback the IP Address your device has been assigned.


Step 2

(example Replace by the IP Address your device is currently using.


Step 3

You should now see the web interface of your Linksys/Sipura.

click on the link "Admin", and once the page has reloaded, click again on the link "Advanced View".


Step 4

Under the LINE 1 Tab, Find the following fields and fill them with the following information

Proxy: (Your server ip address and port assigned by HostPBX.US)
Display Name: John Smith (your name or company name)
User ID: 100000 (SIP Extension number assigned by FreePBX)
Password: ******** (SIP Extension Password assigned by FreePBX)
Register Expires: 180
Proxy Fallback Intvl: 180
Nat Keep Alive: Yes
Nat Mapping/Traversal: Yes


Step 5 (Optional)

Optionally, To save bandwidth, you can change Line 1 "Preferred Codec" to G729a and make sure "Use Pref Codec Only" is set to no.


Step 6 (Optional)

Optionally, you can configure your adapter with a better dial plan, allowing faster dialing of 10 digits number (Local US/Canada) and also enable 7 digits dialing in one area code of your choice.

At the bottom of Line 1 TAB, you will find a field called Dial Plan

Replace the 555 digits in the following line by the area code of your choice and copy the line, including parenthesis, in the Dialplan field in Line 1 Tab at the bottom of the page:



Step 7

Click on the "Save Settings " button at the bottom of the form.

Step 8

Switch to the SIP tab and scroll down to RTP Parameters and set the follow setting:

RTP Packet Size: 0.020

Configuration Screens





Customer Submitted Information:
For North America:
Found this link on configuring the PAP2-NA hardware to work better in North America.
Read the article called: Configure your Linksys VoIP ATA the right way!

How to avoid the long delay to hear the ringtone

If you ever experience some delay to hear the ringtone when you make outgoing calls with your PAP2. Changing the PAP2's Interdigit Long Timer value can help resolve the issue. Follow the next steps in order to change that setting:

Note: However before changing that option, test if calling the number with an # at the end of the number works(e.g. 5554441234#). 


  • 1- First access the PAP2's web interface.
  • 2- Click on the Admin Login and then click on (switch to advanced view)




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