Brandon Buffin Fri, 11/14/2008 - 10:47
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Basically, you need IP connectivity between the sites and the phone will need a TFTP server. So, if you have DHCP at the remote site, add option 150 to DHCP and specify the CCM/CME as the TFTP server. The following link shows how to do this in a Windows environment.

You could also configure a DHCP pool in IOS, such as:

ip dhcp pool POOL1



option 150 ip

If you do not have DHCP, you can configure the settings manually.

Hope this helps. If so, please rate the post.


ayo.monehin Wed, 11/26/2008 - 11:41
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In addition to what bbuffin has said; if you're running DHCP from a Central Location, for example at the Main site, another way you could achieve this is to configure a DHCP Helper Address on the router on your remote site.

To do this on a Cisco router, you enter the following command in Interface Configuration mode:

Router(config-if)#ip helper-address

Replace with the IP Address of your DHCP Server at the Main Site.

This command should be entered on your remote router's Ethernet interface.

On the other hand, if you're running VLANs in the remote location, you can actually enter the command in you VLAN Interface Config Mode on you switch

Switch(config)#interface vlan10

Switch(config-if)#ip address

Switch(config-if)#ip helper-address

Hope this helps?


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