Four Channel’s GSM VoIP Gateway
21
A
）
RAS Port
RAS Port is an unreliable channel which is used to convey the registration, admissions,
bandwidth change, and status messages between two H.323 entities.
B
）
Q.931 Port
（
Call Signaling Port
）
Call Signaling Port is a reliable channel which is used to convey the call setup and
release messages between two H.323 endpoints.
C
）
H.245 Port
（
Media Control Ports
）
Media control port is the port or port range used by the H.245 media control
protocol
.
D
）
Fast Start
Enable or disable the Fast Start in H.225.0. Most H.323 terminals or Gateways
support the Fast Start feature.
E
）
Register Mode
Register Multiple Numbers: The GoIP_4 Gateway sends registration request in one
signaling packet to the gatekeeper. In the mode, one
signaling packet includes two VoIP line’s registration
information.
Register Multiple Times: In this mode, the GoIP_4 Gateway will register like two
terminals.
F
）
DTMF Signaling
1
）
DTMF TYPE
DTMF signals can be sent over to the called party once a call is established. GoIP_4
Gateway supports both Inband and Outband DTMF signal types.
