Remote office VoIP

[carlosmcse]

We have 2 locations but only one BCM. The office locations are connected via a T1 (Point-To-Point) all locations will be the 1140e IP phones on a BCM 400 system. The location where we have the BCM all phones work great, my question is how do I configure the phones in the remote location (Without Phone System) to use the BCM at the other location? I know that on the location where the BCM is located I would have to create destination codes with the extension number of the remote phone and it's IP address so that when we call from the main location to the remote location by typing the extension the phone system will know that in order to get to that extension number it needs to connect to the IP address specified in the VoIP route. If there's a better way of doing this please let me know.

Thanks,

 

[biv343]

An IP set is an IP set - once it's registered to the BCM and has an IP address, it functions just like a phone conencted to the BCM. You would configure it with access to the appropriate line pools, etc, same as you do at the main office.

In short, you have no programming to do at the remote site except configuring the IP phones to talk to the BCM.

Also, don't forget about 911/emergency services issues at the remote site.

 

[carlosmcse]

I don't see any option on the IP phone asking me for the IP address of the BCM, it only asks for the Phone IP, Subnet Mask and Gateway address. I assume the gateway address is the router IP to be able to get to the other network (where the BCM is located). Any ideas? The phones are all 1140e

 

[biv343]

You should see prompts for S1 address, S1 port, S1 action and S1 retry count. S1 address is the IP of your BCM, S1 port is 7000.

What firmware is on the 1140? They aren't officially "supported" on BCM until release 4.0, so you might have to manually update the firmware with a TFTP server first.

 

[carlosmcse]

Found the problem, I was doing full DHCP instead of partial, this side of the network the DHCP server is a Windows 2003 DHCP server and I don't know how to configure the option for the VoIP gateway using DHCP options. and it's now working with no problem.