Panasonic KX-NCP0158 Quick Installation Manual page 66

C Guidance for VoIP Installation
Note
When a DHCP server (which automates IP addressing of devices on the network) is not used, static IP
addressing must also be enabled for all IP-CSs.
Does only a single router provide access to the IP network?
In a dual network, 2 routers provide access to the IP network as shown in the diagram below. However, only
one router can be used as an access point to the network.
Therefore, in the diagram below, if router A, whose IP address is assigned as the default gateway IP address
of the PBX and the IP-CSs, fails, VoIP communications are no longer possible; they are not able to switch their
default gateway from router A to router B to access the IP network.
Router A
Default gateway of
the PBX: Router A
66 Quick Installation Guide
IP Network
Router B
Default gateway of
the IP-CS: Router A