D-Link DVX-2002F User Manual page 54

UDP Port: SIP over UDP service port. By default D-Link IPPBX system uses UDP as SIP

transmission protocol. Port number can be changed here if required.
TCP Port: By ticking the "Enable" checkbox you can enable global SIP TCP support.To register

a SIP extension over TCP protocol, you'll have to select TCP transport on the extension
configure page, please refer to
TLS Port: By ticking the "Enable" checkbox you can enable global SIP TLS support. To register

a SIP extension over TLS protocol, you'll have to select TLS transport on the extension
configuration page, please refer to
Start RTP Port/End RTP

stream.Do not change the port numbers or you may encounter audio issue with phone calls.
DTMF Mode:The DTMF mode specifies how touch tones will be transmitted to the other

side of the call. Possible values for this field are rfc2833, inband, info, and auto.
Allow Guest: This setting determines if anonymous callers are permitted to place calls to the

DVX IPPBX system. For security precautions please do not enable this option.
Max Registration/Subscription

and subscriptions (seconds).
Min Registration/Subscrption

Default Incoming/Outgoing Registration

registration.
NAT Support
When the DVX IPPBX system is behind a NAT device and needs to communicate to the outside. It
needs to know whether it is talking to someone "inside" or "outside" of the NATted network. For
example, if you are going to deploy remote extensions you have to tell the DVX IPPBX system
which network address/addresses are from inside and which are from outside. Below is an
example configuration.
External IP: Your static public IP address or domain name.

External Host: This issimilarto"External IP"exceptthat the hostname is looked up every

"External Refresh" seconds(default 10's).
External TCP Port:Port number of SIP signaling with TCP transport protocol on the public

network.
External TLS Port:Port number of SIP signaling with TLS transport protocol on the public

network.
chapter 2.8.1.
chapter 2.8.1.
Port: The UDP ports used by DVX IPPBX system to carry RTP voice
Time(sec): Maximum allowed time of incoming registrations
Time(sec): Minimum length of registrations/subscriptions.
Time(sec): Default length of incoming/outgoing
53 / 130
DVX IPPBX