DBL Technology EP-636 User Manual
Disable the Fast Start procedure is described in H.225.0. This option is mainly used for testing and
solving compatibility problems. If not sure, let this option unselected.
Ras Port is connected to an unreliable channel, which is used to convey the registration,
admissions, bandwidth change, and status messages between two H.323 entities.
Call Signaling Port is connected to a reliable channel used to convey the call setup and teardown
messages between two H.323 endpoints.
Media control port is the port or port range used by the H.245 media control protocol. Note: the
H.245 media control protocol uses TCP.
RTP (Real Time Protocol) 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. Diffserv 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.
Transfer Mode is set to confirm the way of call transferring.
5.4.2 SIP Phone
SIP (Session Initiation Protocol) is a relatively new Internet standard. It is a simple, low-level
protocol for initiating interactive communication sessions between users. These sessions can
involve two or more users. Such sessions include voice, video, chat, interactive games, and virtual
reality. If you are the SIP phone user, select “SIP Phone” in the configuration page and the SIP
phone configuration screen will be displayed.
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