IP Phone configuration

lkirkland · ‎11-14-2008

I want to register a IP phone on a network that does not have CCM or CME to a remote location that does. What would the configuration be?

Brandon Buffin · ‎11-14-2008

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.

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a00800942f4.shtml

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

ip dhcp pool POOL1

network 192.168.1.0

default-router 192.168.1.1

option 150 ip 10.10.10.10

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

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7960g_7940g/4_1_2/english/administration/guide/7900set7.html#wpxref70415

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

Brandon

ayo.monehin · ‎11-26-2008

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 10.10.10.10

Replace 10.10.10.10 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 10.1.1.10

Switch(config-if)#ip helper-address 10.10.10.10

Hope this helps?