[cisco-voip] Cisco 7960 woes

[Bill Simon]

What signaling protocol are you using?

Joe Mays wrote:
> Okay, trying to set up some Cisco 7960 phones to work together. I put
> one (phone A) behind a firewall router doing NAT and had an internal
> address assigned. It came up fine, but I was getting one way audio
> with another phone. That turned out to be because the other phone
> (phone B) was responding to phone A's internal address rather than
> than the external address of the firewall.
> 
> Okay, simple solution. I applied a real address block to the inside of
> the firewall, turned off NAT (and all firewalling, actually) and let
> it assign a publically addressable IP to the phone. Now the phone
> comes up, gets it's ip, but fails to contact the tftp server to
> download its config. I can't see why this would be happening, when it
> was able to contact the tftp server before. Clues?
> 
> Better still, a straightforward description of everything that should
> be set up on the server and the phone and what the xml file donwloaded
> in tftp should contain would be a huge help.