Panasonic KX-TDA0480, Getting Started Manual

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1.2 Network Devices and Numbering Plan
6 Getting Started
Notes
• Recommended IP Networks: the IP Gateway Card's quality of performance depends
on the type of network in use. For instance, transmission delays due to congestion on
the network and inadequate service characteristics of Internet Service Provider (ISP)
can both contribute to loss in voice communications. Manageable networks (e.g., LAN)
in which static
*1
IP addresses can be used provide better quality of service compared to
unmanageable networks such as the Internet.
• Firewalls: a firewall protects the internal networks of an organisation against
unauthorised penetration from outside. However, routing a VoIP network through a
firewall may cause performance degradation. Check with your network administrator of
the existence of firewall.
1.2.1 Numbering Plan Example
This section describes the network numbering mechanism based on the previous example
diagramme. Please configure your network referring to this example.
IP Addressing Information
IP addressing information is typically supplied by a network administrator. Consult your
network administrator for specific values.
*1
Dynamic IP addressing (using DHCP/BOOTP) is not supported.
Description Los Angels
Office
Chicago
Office
Gateway IP
Address The Gateway IP address identifies the
location of each unit in the network during
VoIP communications. A unique IP address
must be assigned to each unit.
200.45.11.35 199.176.64.41
Route IP
Address
(Firewall or
Router) When the IP Gateway Card is routed
through a firewall, the internal IP address of
firewall becomes the Gateway address to be
associated with the IP Gateway Card
instead of the router IP address.
200.45.11.1 199.176.64.1
Subnet Mask
Address Each network location has a subnet mask
address that helps to define which digits of
an IP address are used for the network
address and the host address. Each
Gateway IP addresse must fall within the
same subnet as that of the router shared by
the units.
255.255.255.0
(default)
255.255.255.0
(default)