Nortel BCM50 3.0 Installation And Maintenance Manual page 71

Chapter 4 Determining DHCP server configuration and IP address 71
By default, the router LAN IP address is 192.168.1.1, and the IP address assigned to the BCM50
system is the first IP address in the DHCP pool. If the DHCP pool starts at 192.168.1.190, then the
BCM50 is 192.168.1.190 even though the router is 192.168.1.1. Therefore, the BCM50 system
receives the IP address 192.168.1.2 (subnet mask is 255.255.255.0) from the DHCP server on the
integrated router.
The DHCP server on the integrated router supplies the information (primary and secondary TPS
server information, VLAN IDs) to the IP Phones enabling the phones to connect to the BCM50. If
the IP address of the integrated router changes, then the IP address reserved for the BCM50
automatically changes. The DHCP server on the integrated router automatically updates the S1
and S2 IP address.
For more information about configuring a DHCP server for your BCM50 main unit, see the
procedure To configure DHCP server settings on page 142.
Installation and Maintenance Guide