Trying to connect to sip:echotest fails -- it seems to ignore the SRV record for _sip._udp.woodhou.se and use the A record for woodhou.se instead -- and that machine isn't the SIP server. Trying to connect to sip:echotest.org _also_ fails -- no clue why. There's some DNS traffic but no attempt to contact the server. Only when I specify sip:echotest.2.163 does it connect. You can call those SIP urls if you want -- it's just an echo test. You can probably work out the required username to actually ring the real telephone, but please don't use it :)
In the upstream bugzilla, Damien told me it's fixed in 2.0.1 Daniel