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3CX Phone System for Windows System for Windows
Page 34
Screenshot 10 - Add VOIP Provider account
3.
The registrar/Proxy Hostname will be pre-filled. Compare these with the details that
you have received from your VOIP provider and check that these are indeed correct.
Depending on the VOIP provider that you are using, some fields will be disabled. This
means you do not need to change them. You do not need to change any of the
options included in the other sections. Click Next to continue.
4.
Now enter the VOIP provider account details. In the VOIP External number field, enter
the VoIP line number that has been assigned to. Then enter the Authentication
ID/user name and password of your VOIP provider account. You can configure how
inbound calls should be routed in the ‘Route inbound calls section’. You do not need
to change any of the other options included in the other sections. Click Next to
continue. If you are using a SIP trunk, the authentication ID and password will be
greyed out, since authentication is done via IP.
5.
3CX Phone System will now perform a firewall check. 3CX will connect with a public
3CX firewall check server (firewallcheck.3cx.com) and will check that it can send and
receive UDP data on port 5060 (for SIP), port 3478 (for STUN) and port 9000 to 9016
(for up to 8 simultaneous calls, default setting). If it can, the firewall check will
succeed. If it does not, the firewall check will fail and you will have to edit your firewall
configuration. You can skip the test and modify your firewall configuration later, but
you will not be able to make or receive calls via this provider until you pass the firewall
check.
6.
On the next page, you will be asked for a prefix so as to create an outbound rule for
this VOIP provider. Tick the “Create outbound rule” check box and enter the dialling
prefix in the “With prefix” text box.
To make calls via this provider, precede the
number to be dialled with this prefix.