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70 Chapter 4 User Notes
N0115790
Adding IP telephony to a multi-site network
Scenario 1: A BCM50 in the primary site acting as the gateway for
both sites
1 Ensure that the DHCP Server in the BCM50 is disabled, that the BCM50 is
connected to the router, and both have booted.
2 Add the IP phones to the primary site as per BCM50 installation guide.
3 Create a tunnel to the remote site, as described above.
4 In the remote site, set the S1 and S2 addresses to the IP address of the
BCM50, which is identified in the router DHCP table or in the BCM50. This
is done with a CLI command.
TELNET or SSH to the router. This needs TELNET or SSH enabled on that
router. Select menu 24, select menu 8, and enter the commands:
ip dhcp enif0 server voipserver 1 <BCM50_IP_Address> 7000 1
ip dhcp enif0 server voipserver 2 <BCM50_IP_Address> 7000 1
5 Add the IP phones to the remote site, configured for full DHCP client mode.
Scenario 2: A BCM50 in each site, each acting as the backup call
server for the other site
1 At each site,
a Ensure that the DHCP Server in the BCM50 is disabled, that the BCM50
is connected to the router, and both have booted.
b Add the IP phones to the site as per BCM50 installation guide.
c At each router, change the S2 address to the IP address of the remote
BCM50, using TELNET or SSH, and the CLI command,
ip dhcp enif0 server voipserver 2 <Remote_BCM50_IP_Address> 7000 1
2 Create a tunnel between the sites, as described above.
3 Create an H.323 trunk between the BCM50s, as per the BCM50 User Guide.