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.

Note: Some versions of Cisco IP 'phone (typically multi-line devices from the SPA30x and SPA50x series) provide a [setup] key (icon is one piece of paper with one corner folded). On these models, pressing [setup] then selecting 'Network' from the menu provides its IP without dialing any codes.

Step 2

Using your favorite web browser from a computer on the same network, point the address to the IP address of your adapter.
(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

Nat Keep Alive: Yes
Nat Mapping/Traversal: Yes
Proxy: (xxxx is listed in your dashboard endpoint page)
Register Expires: 300
Proxy Fallback Intvl: 300
Display Name: John Smith (Replace with your name or company name)
User ID: 100000 (Replace with your SEP number)
Password: ******** (Type in SEP account password)
DNS SRV Auto Prefix: NO

(On multi-line 'phones like the SPA30x/50x this tab is labelled 'Ext1', 'Ext2', 'Ext3'. The initial defaults assign all individual line keys to 'Ext1' settings. Labels are specified on the 'Phone' tab)

Step 5

Click on the "Save Settings " button at the bottom of the form. The IP 'phone may take up to 35 seconds to re-initialise.