<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I have never seen any nat issues with SPA5xx phones in the field and we have many deployed. Can you nail down why they are failing? Try adjusting nat params in the SPA configs such as keepalive.<div><br></div><div>Mike</div><div><br><div><div>On Jul 29, 2010, at 6:34 PM, Loy Glenn wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">As the Subject outlines, this is the basic setup. Does anyone have any experience w/ FreeSWITCH and any session border controllers? The problem we are having seems to be related to NAT. We have several Cisco Spa5xxG phones which remotely register to a FS that is publicly accessible. The phones are behind NAT router, and begin to fail after more than 4 register.<br>I am thinking about using the SBC for a registration/media proxy, and am wondering how I would get FS and the SBC to work together. Any ideas?
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