DBL Technology EP-636 User Manual
RTP Port
is the target transport address for the RTP audio stream to be sent to.
RTP QOS
is a service field in UDP IP packets carrying a RTP data. Enter RTP QOS if your
network supports “DiffServ” and can prioritize the packets to maintain voice quality. It includes
three modes:
None, IP TOS
and
DiffServ.
As to TOS Value, there are six kinds: Routing, Priority,
Immediate, Flash, Flashoverride and Critic/Ecp. Differserv Class refers to the following items:
Best Effort, FWD C1 – from Low Drop to High Drop, FWD C2 – from Low Drop to High Drop,
FWD C3 – from Low Drop to High Drop, FWD C4 – from Low Drop to High Drop, and
Expedited FWD.
5.4.3 Codec Preference
Codec preference is the order of voice codec. The default one is up transmitting, which is the set
mode for common users. The below figure is the codec preference configuration page.
5.4.4 NAT Traversal
NAT Traversal can make and receive calls through any type of NAT device. Click “NAT
Traversal” and the following screen will be displayed.
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