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- Re: HDX7000 & NAT issue
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06-15-2012 06:55 AM
Hi all, I have a hdx7000 who reach the internet through a cisco router configured with static Nat and it works great.
Now I want to call the hdx via my m100 in a other building of the company, connected through a mpls and different router.
I can start the call, but with a sniffer I watch the reply packet of the hdx is with the public ip and the call fall down.
In the HDX the NAT configuration is AUTO, in attachment a very simple scheme of the network.
can anyone help me?
thank's in advance
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Accepted Solutions
06-18-2012 09:16 AM
HI there...
no, calls from the outside will not work in that case.
I gave you that hint only for testing purposes.
To have internal and external calls, you should consider a vbp-e model.
Maybe you can have a look at this thread here. Simons explains how the natting is done. He writes about an rmx, but the explaination can be transfered to a hdx system.
06-16-2012 06:56 AM
Hi there 🙂
because of the natting in the hdx system, your machine will get the public ip as the answer address in the payload.
To clarify that, you should set nat to "off" in the hdx. Your calls should work now (if the routers are configured correctly).
You should think about a vbp-e as a gatekeeper in your case. With that setup, your hdx (and all other room systems or sw clients) would register directly to the vbp-e (with internal IP, E.164, H323 name). All outgoing calls are then handled by the vbp. You won´t need any nat settings in the hdx anymore.
06-18-2012 12:52 AM
thank's for the reply. If i set Off the NAT in the HDX system, call from the outside will works properly anyway?
If I understand, the router perform all the work about the nat, but therefore I was advised to set the nat configuration in AUTO?
Thank's
06-18-2012 09:16 AM
HI there...
no, calls from the outside will not work in that case.
I gave you that hint only for testing purposes.
To have internal and external calls, you should consider a vbp-e model.
Maybe you can have a look at this thread here. Simons explains how the natting is done. He writes about an rmx, but the explaination can be transfered to a hdx system.
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