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3CX Phone System for Windows System for Windows
Page 42
Screenshot 74 - Adding a DID Line
1.
Enter the DID number as it will appear in the SIP “to” header. 3CX Phone System will
match the number inserted in this field with the “to” header, starting from the last part
of the received string, thus avoiding any differences in the format of the number. For
example, if you are based in the UK and your DID number is 0845-2304024, then you
can enter the number 2304024. This will match any DID number inserted in the “To”
field ending with these numbers, including +448452304024, 08452304024,
00448452304024, and, of course, 2304024. Of course it is best to check with your
VoIP provider or Phone Company in what format the DID number will be inserted just
for reference.
Another way of finding out the exact number that is inserted in the “To” field is by
viewing the server status log and seeing the “To” field assigned by the VoIP Provider /
Gateway and then adjusting the DID line number accordingly.
3.
In section “Source”, select the Gateway or Provider which provides the DID number
(i.e. from which the call will originate). This field is optional but adds a level of security,
since otherwise 3CX Phone System will accept calls to that DID number from any
source. If you are not using a VOIP provider but only a VOIP Gateway, you could
leave this field unchecked.
4.
In the next section you can specify where calls to this DID line should be routed to:
Route inbound calls in office hours: