1.3 Network Management
1.3.1 DHCP (Dynamic Host Configuration Protocol) Server
For IP-PTs to communicate over a network, an IP address must be assigned to each IP-PT to identify its
locations on the network. While these addresses can be assigned manually at each IP-PT, it is also possible
to use a DHCP server.
A DHCP server automatically assigns IP addresses to IP-PTs when they are connected to the network. An
IP-PT then uses the received IP address information to register to the IP-EXT card.
Using a DHCP server allows you to centrally manage and automate the assignment of IP addresses.
DHCP Server
IP-PT
IP Address: 192.168.0.101
Subnet Mask Address: 255.255.255.0
Default Gateway Address: 192.168.0.1
Request IP address
IP address information
assigned to IP-PT
IP-EXT Card
Request registration using the
received IP address information
Establish connection
When an IP-PT is connected
to the network
When the IP-PT is registered
to the IP-EXT card
1
2
3
4
Note
• The PBX is not able to act as a DHCP server. To use the DHCP client function of IP-PTs, a separate
DHCP server is required on the network, as shown above.
• The IP address for the IP-EXT card cannot be assigned automatically using a DHCP server. This IP
address must be
assigned manually by using the Maintenance Console (PC programming software of
the PBX). For details, refer to "4.1 Programming the IP-EXT Card".
• An IP-PT cannot request an IP address from a DHCP server on another LAN (connected through an
IP network). An IP-PT can only receive IP address information from a DHCP server on its own LAN.
Therefore, when IP-PTs 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-PTs on that LAN must be assigned
manually.
8 Information about IP Proprietary Telephones
1.3.1 DHCP (Dynamic Host Configuration Protocol) Server
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