Cannot give static IP to Avaya B179 Sip

[marr11]

I have two B179 Conference phones.

I want to give them static Ip's. However when I go into the phone via the ip of the phone and then go into settings/network and give it a static IP it does not work.
It reboots etc.But it does not show up in the Avaya status monitor.

When I try to dial a phone it says "SIP Stack Error"

I then delete the extension and set up again with dynamic DHCP on phone through web it comes back and works fine. Why cant I give it a static IP?

Thanks.

[marr11]

Well it appears either no one has any answers or I have failed to provide enough info.
Can anyone tell me if my problem is in not changing the Settings\Provisioning\Device management\Use DHCP option to off. and perhaps I need to change the DHCP option from 242.

Honestly I dont know what these things do although I have READ the DOCUMENTATION. It s a little unclear to me.

Perhaps someone knows how these should be set if I want to statically set my B179 Phone to static IP.
Here is a picture of the option page.