[Freeswitch-users] Polycom register problem in private address

peder at networkoblivion.com peder at networkoblivion.com
Thu Apr 9 07:59:56 PDT 2009

You might try entering your external NAT IP into the Polycom config. 
I've found that if you specify the external IP, Polycom's generally work 
better thru NAT.  This is one area where Cisco is superior to Polycom. 
On Cisco, you just enable NAT and you don't have to specify the external 
IP.  Of course Cisco has a whole mess of their own issues too.


Brian West wrote:
> This is because the Polycom doesn't support STUN, RPORT or any other nat 
> traversal technology.  You have a couple of choices please 
> review http://wiki.freeswitch.org/wiki/NAT_Traversal
> Also review the NDLB-force-rport option for the sofia profile to assume 
> rport.  CAUTION this breaks things like cisco phones.
> /b
> On Apr 8, 2009, at 9:02 PM, zhaoxxqq wrote:
>> hi,
>> I use FS server at public Address. I use polycom's IP550 at private 
>> address(, Now there is a problem that the IP550 can not 
>> register to FS. But when I use account to eyebeam, the registering is 
>> OK. the attachment is my IP 550's config file, I think it must be NAT 
>> problem. Can anyone can help me solve it? 
> Brian West
> brian at freeswitch.org
> -- Meet us at ClueCon!  http://www.cluecon.com <http://www.cluecon.com/>
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