D-Link DVX-2002F User Manual page 55

External Refresh(sec): The refresh interval of the "External Host".

Local Network Address: Your local network address/addresses.

Notice:
If you have one-way audio or no audio issue on the remote extensions then this most probably means that NAT
support is not properly configured. Please check your configurations here.
Type of Service
Asterisk supports different QoS settings at the application level for various protocols on both
signaling and media. The Type of Service (TOS) byte can be set on outgoing IP packets for various
protocols. The TOS byte is used by the network to provide some level of Quality of Service (QoS)
even if the network is congested with other traffic.
TOS for Signaling Packets: Sets TOS for SIP packets.

TOS for RTP audio

TOS for RTP video packets: Sets TOS for RTP video packets.

COS Priority for Signaling

COS Priority for RTP audio

COS Priority for RTP video

DNS SRV Look Up: Enable DNS SRV lookups on outbound calls.

Relax DTMF: Relax DTMF handling.

RTP TimeOut(sec):Terminate call if there is 60 seconds of no RTP or RTCP activityon the

audio channelwhen we're not on hold. This feature enables the ability tohangupa call in the
case of a phone disappearing from the network, for instanceif the phone loses power.
RTP Hold TimeOut(sec): Terminate call if 300 seconds of no RTP or RTCP activity on the audio

channelwhen on hold.
Add 'user=phone' to

URI.
UserAgent: Allows you to change the user agent string. The default user agent string also

contains the Asteriskversion. If you don't want to expose this, change theuseragent string
here.
packets: Sets TOS for RTP audio packets.
packets:Sets 802.1p priority for SIP packets.
packets:Sets 802.1p priority for RTP audio packets.
packets: Sets 802.1p priority for RTP video packets.
URI: Enable this option if the SIP provider requires ";user=phone" on
54 / 130
DVX IPPBX