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VP-102 / VP-202 User Manual
26
1.
RAS Port
– This Port is used to convey the registration, admissions, bandwidth change, and
status messages between two H.323 endpoints. If not specified, the port address is assigned
automatically.
2.
Q.931 Port
– This port is used for call signaling to convey Call Setup and teardown messages
between two H.323 endpoints. If not specified, the port address is assigned automatically.
3.
H.245 Port
– The H.245 requires at least 2 ports for media control protocol. It should be
specified as a port range. If not specified, the port address is assigned automatically.
4.
Fast Start
-
Fast Start is a new method of call setup that bypasses some usual steps in order to
make it faster. In addition to the speed improvement, Fast Start allows the media channels to
be operational before the CONNECT message is sent, which is a requirement for certain billing
procedures. Leave this enabled if you are not sure.
5.
Register Mode
- Two registration modes are support.
Register Multiple Numbers
mode means
that multiple numbers are registered in a single registration message.
Register Multiple Time
mode means that each number is registered in a separate registration message.
6.
DTMF Signaling
– This parameter sets the method of sending DTMF signals.
Inband
measns
that the DTMF signal is sent as an analog signal via the voice channel.
Outband
means that the
DTMF signal is sent as DTMF command via the data channel and is commonly known as
RFC2833. In
Outband
mode, a DTMF payload type is required and the default type is set to 101.
7.
Signaling QoS
– This parameter sets the QoS mode for VoIP Signaling for better response time
and more reliable VoIP Call signaling. Both IP TOS and Diffserv modes are supported. Please
check with your network administrator or ISP for the correct setting.
8.
Signaling NAT Traversal
– NAT Traversal is an algorithm designed to solve a common problem
in TCP/IP networking in establishing connections between hosts in private TCP/IP networks that
use NAT devices. This parameter only sets the NAT Traversal mode for VoIP signaling. The 3
methods supported are
NAT Citron
,
Port-forward/DMZ
, and
Relay Proxy
.