B Network Management
DHCP (Dynamic Host Configuration Protocol) Server
To establish communication over a VoIP network, IP addresses must be assigned to IP-CSs 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. Using a DHCP server allows you to centrally
manage and automate the assignment of IP addresses.
Assign IP address
information to the IP-CS
When the IPCMPR/DSP cards are
connected to the network
When an IP-CS is
connected to the network
Request IP address
information
1
Assign IP address
information to the
IPCMPR/DSP cards
2
Request IP address
information
3
4
IP-CS
DHCP Server
IPCMPR/DSP Cards
Note
•
The PBX is not able to act as a DHCP server. To use the DHCP client function of IP-CSs, a separate
DHCP server is required on the network, as shown above.
•
An IP-CS 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-CSs 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-CSs on that LAN must be assigned manually.
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Quick Installation Guide
Document Version 2009-12
B Network Management
