Toa N-8000 Series Ver.1.41 - Manual (Page 249)

8-2
Chapter 8: APPENDIX
1. BASIC KNOWLEDGE ABOUT NETWORKS
1.1. IP Networks and Address
The IP networks that the Exchanges, Multi interface units and IP stations can use include Local Area
Networks (LAN) used in small-scale area, such as within or on the premises of a company, and the Internet,
which covers a wide area over remote distances.
Internet Router Router
N-8000EX
(C)
N-8000EX
(A)
N-8000EX
(B)
LAN
LANs differ from the Internet in the IP address to be used.
Local IP address (private IP address):
This address is used and can be freely set within the LAN.
Global IP address:
This is the only one address that is used to access the Internet.
To use the Exchanges, Multi interface units and IP stations through the Internet, a fixed global IP
address must be acquired and assigned to each unit. When using the router, set the global IP address
to it.
When a connection is made from Unit B to Unit A in the above figure, the local address can be used.
However, when a connection is made from Unit C to Unit A, the global IP address must be used.
The fixed global IP address must be assigned to the units connected via the Internet.
Consult with a network administrator or IPS (Internet service provider) for the acquisition of a fixed global IP
address.
Note
The Internet is not guaranteed quality. Packet loss may result if the network is congested, possibly causing
voice communications to be interrupted or noise to be generated.