iiNet and registration forbidden errors, gateway.permuted.net:sip_?:none: SIP Registration is Forbidden for pho Options

[tjs]

Since upgrading to 5.07, I've been having the following problems with VoIP and iiNet. I've seen lots of similar reports, and I thought I'd add mine to the fray.

Registration proceeds fine when setting up the config, and any time I hit [sync now]. After some period of time (not really sure how long), I start hearing nothing but an engaged tone. At the same time, the logs are filling with this:

Unfortunately iiNet support couldn't, or wouldn't tell me what the logs look like from their end. I can't think of a way to do a packet dump, either, so I can't take a look at the traffic myself.

Just to preempt any questions, this is all based upon a new setup from factory defaults after upgrading.

Regards,
Toby.

Aug 04 20:51:16 gateway.permuted.net:sip_?:none: SIP Registration is Forbidden for phone 03xxxxxxxx
Aug 04 20:52:15 gateway.permuted.net:sip_?:none: SIP Registration is Forbidden for phone 03xxxxxxxx
Aug 04 20:53:15 gateway.permuted.net:sip_?:none: SIP Registration is Forbidden for phone 03xxxxxxxx
Aug 04 20:54:15 gateway.permuted.net:sip_?:none: SIP Registration is Forbidden for phone 03xxxxxxxx

The config for this endpoint is:

A epname '03xxxxxxxx'
A authUserId '03xxxxxxxx'
A password '*********'
A displayname 'xxxxxxxxxxx'
A adminstate 'true'
A index '1'
A codecorder 'PCMU,PCMA,G729'
A regstatus 'registered'
A registrar 'sip.vic.iinet.net.au'
A registrarPort '5060'
A regExpires '3600'
A userDomain 'iinetphone.iinet.net.au'
A outboundserver 'sip.vic.iinet.net.au'
A outboundserverPort '5060'