[Serusers] SER outbound routing?

Hi, I have a few questions about SIP and SER - feel free to blast me if they've been asked and answered before - I have tried to find my answers. I'm fairly new to SIP but not to VOIP (I'm sorry, most of my life is spent with CCM). I've played with SIP a bit but not really indepth. The Scenario: I have a few SIP phones at home (mostly Cisco 7940s and ATAs etc) and I want to build a residential gateway that will allow me to do the following in terms of "external" stuff: Route outgoing calls to particular proxies that require (usually) digest authentication (eg. iconnecthere for international dialing, fwd, etc) - the thing I don't get is the authentication side of things - ie. the phone won't know it needs to authenticate so the SIP proxy must provide this ... "Register" with external proxies so that (eg. FWD and iptel.org ) and so that it knows to send calls to my FWD number to my proxy server so that my proxy can route to my internal phones and/or send the call on to whereever I may be. I've read through the SER documentation and I can see how to rewrite URIs but I was confused about how digest auth works with that. Can I actually do the SER registering with other proxies? I realize this really isn't the role of a SIP server. Is there a better way of doing this? Have I really just missed the point somewhere along the line? (I'm quite prepared to accept that I may have ..) I've had a play with getting Asterisk to do this and got it to register etc, but got a bit stuck with the whole media/codec side of things (and basically gave up prematurely!) I just wanted to do some SIP things! My idea with doing these things is to see if I can figure out a bit of a "packaged" up version of SER for those of use who want to integrate things like FWD/iptel.org etc into our "normal" telephony environment at home. (Anyone know what the easiest way of getting an FXO port at home is?) -- Matthew -- Matthew(a)Moyle-Croft.com | mmc(a)mmc.com.au | mmc(a)206gti.net http://www.Moyle-Croft.com | http://www.mmc.com.au | http://206gti.net