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Port range forwarding on a Cisco Pix 525 IOS 8.04 - Mitel 5312 remote handset

I have two questions and would really appreciate any help on resolving this:

We have a Cisco Pix 525 with IOS 8.04. I am trying to NAT  a range of ports via ASDM to support a Mitel 5312 remote handset and Passive FTP.

I couldn't find solution to NAT a range of ports to a private IP address, so I assigned a public IP address to the Phone system and NAT all ports to the private IP address of the phone system via Pix.

I have got to a point where, when I dial on the handset it rings another extension but no voice.  I have some experience with Cisco routers, but new to Pix and Mitel.
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munshimq2
Asked:
munshimq2
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2 Solutions
 
masnrockCommented:
This forum convo provides all the information you need.
http://mitelforums.com/forum/index.php?topic=3632.0
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munshimq2Author Commented:
Thanks for the reply. I trying this now will update hopefully by later today. In the meantime if anyone has any specific info please let me know. Thanks.
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munshimq2Author Commented:
Ok so I finally solved the problem.

Mansrock, you pointer helped a lot but the final solution was provided by this post:

http://mitelforums.com/forum/index.php/topic,2694.msg10874.html#msg10874

Hope this helps someone else.
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munshimq2Author Commented:
The suggestion Mansrock provided didnt completely related to me, however, was a excellent pointer in the right direction.
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munshimq2Author Commented:
So as a step by step solution to help others:

1) Setup portforwarding on Cisco Pix 8.04, this doesnt support forwarding a range of ports so I had to create Service Objects and NAT another public IP to the phone system.
2) On the phone system change the NAT IP address on the 2 places specified here:
http://mitelforums.com/forum/index.php/topic,2694.msg10874.html#msg10874
3) Change the NAT type under the actual phone settings to NAT (Default is Native).

On the actual handset itself you will need to change the ICP address and TFTP server address to your public IP address assigned in step 2.

I spent a lot of time trying to figure this out, hope this helps someone.
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