Been meaning to ask this for some time... no big deal, but curious. I have a single register statement in my iax.conf for iaxtel like: [general] port=5036 register => npi:mypassword@iaxtel.com <snip> However, when I restart *, I see: Registered to '69.73.19.178', who sees us as 205.221.193.101:5036 Registered to '69.73.19.178', who sees us as 205.221.193.101:4569 which suggests both iax and the iax2 protocols in use. The 'iax show registry' and 'iax2 show registry' confirms it as well. I only see this with iaxtel.com links, not with other iax links. If I remove the register statement, neither iax or iax2 is active. Is this something specific to the iaxtel.com box, something that I'm missing in my config, or what?