Line in use forward
(Optional) Enter a number to which incoming calls are
forwarded when the extension is busy. The number
could be an extension or a PSTN number with
appropriate outbound prefix.
Selective call blocking
(Optional) Check Block anonymous calls to block all
calls without a Caller ID; one could also explicitly list
numbers to block by entering one or more calling
numbers and click Add button. Use Remove button
and Remove all button to cancel blockings.
Selective call forward
(Optional) Unconditional call forwarding according to
the calling number. Enter one or more calling numbers
and a forwarding number, and click Add button. E.g.,
forward only calls from 101 and 102 to a cellular
number, while let the rest enter the voice mail by
default. Note that extensions must be separated by
commas. Use Remove button or Remove all buttons
when some forwardings are no longer required.
