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2.2 Programming
Programming Guide 15
Parameter Descriptions
The parameters indicated with "#" must be changed while the VoIP Gateway Card is in the "STOP" status (see
"2.3.1 Status Control"). The changes must be followed by a reboot to become effective (see "2.5.1 Reboot").
The parameters indicated with "*" must be changed while the card is in the "STOP" status (see "2.3.1 Status
Control"). The changes do not have to be followed by a reboot to become effective.
Port Number Settings
Voice CODEC Settings
Parameter & Description Default Value Range
#
H.225 Port No.
Specifies the port number for the H.225 protocol (call control)
in an H.323 protocol suite.
Generally, there is no need to change the default value.
1720 1 to 65535
#
H.245 Port No.
Specifies the port number for the H.245 protocol (negotiation
of channel usage and capabilities) in an H.323 protocol suite.
4 consecutive ports, starting with the specified port, will be
used (by default, 1721 to 1724).
Generally, there is no need to change the default value.
1721 1 to 65532
#
RAS Port No.
Specifies the port number for the H.225 protocol (RAS) in an
H.323 protocol suite.
Generally, there is no need to change the default value.
1719 1 to 65535
#
RTP/RTCP Port No.
Specifies the port number for RTP/RTCP. 8 consecutive
ports, starting with the specified port, will be used (by default,
5004 to 5011).
Generally, there is no need to change the default value.
5004 1 to 65528
Parameter & Description Default Value Range
*
Voice CODEC Priority 1st–4th
Specifies the type of CODEC for voice communications.
Choose the appropriate CODEC for the network environment
(e.g., bandwidth, CODEC conditions of the remote terminal).
When using multiple CODECs, set them in an appropriate
priority order.
Prior to establishing a call, a negotiation takes place over the
network and the CODEC to be used will be decided
depending on the setting of this parameter.
For details about relations between bandwidth and CODEC,
refer to "Detailed Explanations" in "2.2.3 Voice
Communication Parameters".
1st: G.729A
2nd: No default
3rd: No default
4th: No default
G.723.1,
G.729A,
G.711Mu,
G.711A