[Asterisk-Users] ATA with IAX protocol

[Joseph]

Who else makes Analog Telephone Adapters with IAX protocol besides
Digium?
I've seen Farfon is advertising their unit but I'm not sure if they
shipped it or not.

Why is so hard for others to support this protocol in their adapters?
SIP is totally unsuitable for firewall traversal for security reason.

I would like to get min. two port unit.  Is it possible to use IAX
protocol without hardware unit that supports IAX?

-- 
#Joseph