Panasonic KX-NS700, Installation Manual

Page: 275 / 308

8.1.2 DHCP (Dynamic Host Configuration Protocol) Server
To establish communication over a VoIP network, IP addresses must be assigned to IP telephones and the
PBX to identify their locations on the network. While these addresses can be assigned manually, it is also
possible to use a DHCP server to automatically assign IP address information. The PBX has a DHCP Server
feature. Therefore, the PBX can act as a DHCP server or DHCP client depending on its settings. When the
PBX’s DHCP Server feature is enabled, it allows you to centrally manage and automate the assignment of IP
addresses with Web Maintenance Console. For details, refer to "
DHCP Server" in the PC Programming
Manual.
Assign IP address
information to an IP
telephone
When the mother board is
connected to the network
When an IP telephone is
connected to the network
Request IP address
information 1
Assign IP address
information to the
DSP card 2
Request IP address
information
3
4
PBX
(DHCP Server
feature enabled)
DSP Card
IP Telephone
Note
•
The DHCP Server feature is disabled by default. To enable the feature, refer to "5.4.2 Enabling the
DHCP Server Feature".
•
An IP telephone and the mother board/DSP card cannot request IP addresses from a DHCP server on
another LAN (connected through an IP network). They can only receive IP addresses from a DHCP
server on the same LAN. Therefore, when IP telephones are located on several LANs, a DHCP server
is required on each LAN. If a DHCP server is not present on the LAN, IP addresses for IP telephones
and the mother board/DSP cards on that LAN must be assigned manually.
•
When the PBX has been set to act as a DHCP client, use an external DHCP server to assign IP address
information automatically.
•
When the PBX is set as the DHCP client and cannot receive appropriate IP addressing information
from an external DHCP server, the PBX keeps using the previous effective IP addressing information
and checks whether any overlapping of IP addresses exists. If the IP address of the PBX overlaps with
another IP address, the PBX displays a warning to encourage changing the IP address of the PBX.
Document Version 2016-03 Installation Manual 275
8.1.2 DHCP (Dynamic Host Configuration Protocol) Server