After you have completed the DECT registration process and added the IPEI of your handset to the M300/M700, you can assign multiple SIP accounts to those handsets.
Create the SIP Extension and assign it to a handset
- Login to the Web user interface and navigate to Extensions →
- Create the SIP extension and assign it to any of the registered DECT handsets.
- Save the changes and verify that the SIP Extension has been
assigned to the selected handset.
In my example you can see that I have assigned SIP extensions
5658 and 5695 to the handset 02556FCE35 (Index #3)
Switch between SIP Extensions on the handset
On the handset press the Menu key → Settings → and press the Menu key to select the "Line" option.
You should now see the available SIP extensions for that handset.