Am I the only person messing with a BX2000?

Has anyone else managed to get the GoIP device working correctly? I think I'm 80% there, but have a couple of issues;

1) I can't seem to get a REGISTRATION setup between the Vigor and GoIP device under "SIP Trunk". I suspect both devices are trying to act as a SIP Client but I can't see a way around it. If I disable REGISTRATION on both ends ('Call without Registration') the BX2000 will actually place outbound GSM calls.

2) I suspect there is a problem with ALERTING and Early Media. On my VoIP extension I'm hearing ringing when I sent a INVITE to the GoIP. Once the ALERTING message comes back, the ringing stops and you get silence until the mobile answers.

3) I'm getting voice outbound from the VoIP extension to the mobile via the GoIP Gateway but not audio from the mobile inbound to the VoIP site (all inside NAT). I've messed with Symmetrical RTP, but I'm having no luck.

Anyone?

Chat soon.