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Page 26 / 100 Scroll up to view Page 21 - 25
TVP-221H User’s Guide
26
Dynamic DNS
It allows Internet users to connect to your gateway using a static URL, rather than an IP
Address. This is particularly useful because a dynamic IP address, by definition, is
constantly changing making it difficult for internet users to find you.
The Service works as follows:
1.
Obtain a free account for the service by registering at
.
2.
www.dyndns.org will automatically notify you confirming your account
information.
3.
Return to
and use the "Create New Host" option to register
your preferred Domain name. It is recommended that you register a name within
the xxxx.dyndns.org hostname.
4.
Details of your
account (Name, password, Domain name)
must then be entered and saved in the DDNS page of the TVP-221H. The TVP-
221H will then automatically notify DynDNS of your changing IP Address and
DynDNS will in turn, map it to your registered Domain Name. Internet users will
now be able to easily connect to your Virtual Servers (or DMZ PC) using your
easy to remember Domain name.
Dynamic DNS Screen
Select
Internet
on the main menu, then
Dynamic DNS
, to see a screen like the following:
Figure 1: DDNS Screen
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TVP-221H User’s Guide
Data - Dynamic DNS Screen
DDNS Service
DDNS Service
You must register for the service at dyndns.org.
Apply for a Domain Name, and ensure it is allocated to you.
Details of your DDNS account (Name, password, Domain name)
must then be entered and saved on this screen.
This device will then automatically ensure that your current IP
Address is recorded by the DDNS Service Provider. (You do
NOT need to use the "Client" program provided by some DDNS
Service providers.)
From the Internet, users will now be able to connect to your Virtual
Servers (or DMZ PC) using your Domain name.
DDNS Data
Dyn DNS
On/Off
User Name
Enter your Username for the DDNS Service.
Password/Key
Enter your current password for the DDNS Service.
Domain Name
(Hostname)
Enter the domain (hostname) name registered at
www.dyndns.org
.
For instance, if you registered johnsmith.dyndns.org,
please enter
johnsmith
DDNS Status
This message is returned by the DDNS Server
Normally, this message should be something like "Update
successful" or "IP address updated".
If the message indicates some problem, you need to connect to the
DDNS Service provider and correct this problem.
4.3
H.323 Configuration
H.323 Status Page
This page lists all current settings for H.323 Parameters.
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TVP-221H User’s Guide
H.323 Parameters
For the most part end users will not be using these functions / features and / or
should use the default settings.
For more information please see the Advanced
User Manuals or consult with your Systems Integrator
1.
Display Name:
The default string is “Customer”.
This field is to set the display name information that is carried in the
H.323 setup messages. Up to 48 characters can be entered.
2.
Terminal Type
: The default value is 60.
This field is to set the H.245 terminal type, which is used as part of the
master/slave determination process of H.245. Typically, setting a value of
less than 50 will force slave operation, and a value of greater than 200 will
force the master operation. For more details, please refer to H.323-related
standard documents.
3.
RTP Port Base
: The default value is 30000.
This field is to select the starting port number for assignment of RTP and
RTCP ports. According to the H.323 specification, RTP port number
should be even in value, and the RTCP port number should be one greater
than the RTP port.
Typically, numbers from 0 to 1023 are reserved on
most systems.
4.
Outgoing Fast Start
: The default setting is off.
This field is to enable or disable the Fast start mode on the outgoing side
of the link.
5.
Incoming Fast Start
: The default setting is off.
This field is to enable or disable the Fast start mode on the incoming side
of the link.
You'll have to reboot the system to make your changes active!
Frame Rate = 2 frames/packet
6.
Auto-Answer
: Enables quick H.225 to H.245 transition without waiting
for receiver picking up the phone, default is on
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TVP-221H User’s Guide
7.
NAT Call Mode
: Enables calls from remote sites which use NAT routers
with private IP networks behind, default is on
8.
Default DTMF Mode
: H323 V2 Signal or IMTC. The default is H323 V2
Signal
9.
DNS IP Address
10.
Alternate DTMF IP Address
11.
DTMF Duration
: default is 300
Gatekeeper
This page is home to many specific H.323 Gateway / Gatekeeper functions /
features. For the most part end users will not be using these functions /
features and / or should use the default settings.
For more information please
see the Advanced User Manuals or consult with your Systems Integrator
The primary function of the gatekeeper component is to provide address
translation services. This function converts external (telephone number)
addresses and alias (name) addresses to network addresses, allowing users to
maintain the same telephone numbers or alias addresses regardless of changes
to their network addresses.
1.
Gate Keeper Mode: The default setting is off.
This field is to select the
co-operation mode with some other gatekeeper(s). Three options are
available:
i.
Off: Disables gatekeeper co-operation,
ii.
Auto: Enables auto-discovery of the gatekeeper
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TVP-221H User’s Guide
30
iii.
Manual: Enables gatekeeper co-operation in manual
operation (the gatekeeper address must be properly
assigned).
The following fields must be filled in when Gate Keeper Mode is set to
manual.
2.
Gate Keeper Address
: Specify the gatekeeper address when configured
to manual mode. When auto mode is desired, this field should be set to
auto
3.
Allow Calls Without Gate Keeper
: This field is to inform the H.323
stack to allow calls when the endpoint is not registered with a gatekeeper.
4.
Registration Type
: This field is to set the endpoint registration type.
This specifies how the endpoint will register itself with the gatekeeper.
5.
Max Registration Retries
: This field is to control how many registration
attempts will be made before the endpoint considers itself to have failed
registration.
6.
Time To Live
: Do not have to set this because GK to perform this
function. Every x seconds will check to see if it is alive
7.
Endpoint Prefix
: This command is used to set the H.323 prefix that the
TVP-221H uses when registering to an H.323 gatekeeper.
8.
Terminal ID
: To specify GW’s ID.
9.
GateKeeper ID
: To specify Gate Keeper’s ID.
You'll have to
reboot
the system to make your changes take effect!

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