[Asterisk-Users] Phones were working fine - Now there is noaudiowhen calling between extensions

[Andrew Kohlsmith]

On Tuesday 21 March 2006 10:55, C F wrote:
> Polycoms are not the best if you want a phone that works behind NAT.

Are you kidding me?  I used to think that anything SIP was a pain behind NAT 
until I turned on 'nat=yes' for the peer/user/friend entry in sip.conf and 
told the IP501 to register to the Asterisk box.  (All defaults too, no 
special hyper-fast register interval or goofy Polycom configuration at all.) 

And even after that I wouldn't believe it until I had three of them behind a 
plain-jane WRT54G on standard Telco dynamic IP ADSL talking to my Asterisk 
box connected through third-party ADSL.  Calls go out, calls come in, it's as 
if they're on the same LAN.

Seriously: It Just Works.  I keep popping into #asterisk-dev and thanking OEJ.  
I'm still not a huge fan of SIP but I have had *no* issues with Polycom 
IP501s behind NAT talking to an Asterisk box on a real IP.

-A.