The FB6000 is designed primarily as a core VoIP switch, which means it uses real public telephone
numbers. A registered telephone will be assigend a DDI (Direct Dial In) number which can be used in call routing.
It also is possible to use the FB6000 in a PABX mode, and allocate internal extension numbers
if you wish.
Note
DDI (Direct Dial In) telephone numbers must be entered in the full international format. This is a plus (+)
then the country code, and area code, and number. e.g. +441234567890 which is country code
44 for UK, area code 1234 and local number 567890.
In the UK you would dial this as 01234567890. Note that there is no 0
in from the of the area code when quoted in international format, and definitely no
(0) in such numbers.
