Sometimes you may be required to forward calls to an external number (I.e. a number not hosted by VIA), for example, a call answering service.
To enable a ring group with an external number, navigate to "Setup" then "Create Ring Group". Then select "Add External Number" towards the bottom of the "Create Ring Group" page.
Assign a name to the number and add the number in full international (E164) format as below:
NB - Currently only UK numbers starting with 01, 02, 03 & 07 can be set as an external number. You will also be charged per minute for the number forward at the same rate as your outbound dialling tariff.
For security reasons, only VIA can add external numbers currently.