[Asterisk-Users] IAX2 + Sonicwall

[Rich Adamson]

> Hi all,
> 
> I currently have an Asterisk test server behind a TZ170 Sonicwall 
> firewall / NAT box, with several DIDs.
> 
> I've found that inbound IAX2 calls don't work reliably (i.e., I get a 
> busy tone) unless I enable "Use Consistent NAT" in the Sonicwall. This 
> feature is poorly documented by Sonicwall, so I thought I'd pass it along.
> 
> Has anyone else run into this, or figured out the rationale for it?

I've used the iaxcomm softphone and a snom 200 behind serveral different
sonicwalls over the past year or so without any problem. The sonicwall
should not be a problem for iax calls at all.