Anyone know anything about the above. I have now configured my Linksys WRT54GP2 to use both phone lines. 1 for Sipgate, the other for VOIP stunt. As I don't have a second phone yet I unplugged from the sipgate line to make some free calls on VOIPstunt. When I went back to the status page after a call sipgate had gone offline and wouldn't register for some time. Don't know if line 2 is affecting line 1 or not, but would like to know if the above can affect this. I have now changed the setting to none, but have the options of use NAT aware outbound proxy, STUN or none. Can anyone help?

Thanks

John

Best off not NAT'ng SIP connections unless you have either a SIP aware NAT box, or some way to tunnel (Proxy, STUN/TURN etc).

SIP has IP details for the call setup & control in the data area of the IP packets, normal NAT only translates the IP headers, so NAT can break it completely.

You could try the public STUN server at: stun.fwdnet.net

Is Bextech around? You seem to have a pretty stable setup

I put my PAP2 onto my routers DMZ.

My plan was just short term to eliminate router/NAT issues during testing. However, having looked at various posts I couldn't find a downside to this long term.

sorry twin_decks I'm starting to get a bit lost in this post now

So the advice so far would seem to be avoid NAT settings and perhaps try setting towards a STUN server. I'm afraid my networking skills aren't good enough to know about DMZ. I'll see how the non-NAT/STUN settings work and go from there I think.

Now what we really need is a definitive guide to setting up a router on a VOIP service - here's hoping

Most routers have a DMZ (De-militarised Zone) setting. When configuring this you enter the NAT address of the device (like the PAP2) and the router exposes this device to the WAN (internet) as if no NAT routing was performed.

You loose the security of hiding devices behind the NAT router, but you gain the benefit of the device sitting directly on the internet without NAT issues.

I think you will find STUN works well though, in my experiements i found it possibly added a few seconds delay into connections.