1.Firstly you should reset your phone adaptor - heres how:

 

Step 1:

Find the MAC address of the device. It is a 12 digits HEX number located on the bottom of the unit.

Step 2:

Encode the MAC address. Please use the following mapping:

0-9: 0-9
A: 22
B: 222
C: 2222
D: 33
E: 333
F: 3333

For example, if the MAC address is 000b8200e395, it should be encoded as
“0002228200333395”.

Step 3:

To perform factory reset:

a. Pickup the attached phone, dial ***.
b. Enter “99” and get the voice prompt “Reset”.
c. Enter the encoded MAC address of the device.
d. Wait for 15 seconds.

The device will reboot automatically

 

2. Once your adaptor has reset pickup the attached telephone and call *** followed by 02 - You'll hear a read out of IP address - note this down, disregarding any leading 0's. So if you hear 192.168.001.014 - note down 192.168.1.14

 

3. Type the web address into a web browser on a local PC (internet explorer, for example) it will look something like http://192.168.1.14 in your browsers address bar.

You will be prompeted for a password, enter 'admin' and click 'login'.

 

4.You will see a screen like the one below. Please change all settings which are displayed in purple.

Once you have changed the settings in purple, click 'update' - once you have updated the device come back to this page and select 'reboot'