I had something pretty similar happen when I moved to them. AA said it would sort itself out when port completes and it did

Well it's been up a day and hasn't done it again although I did change the registration expiry and re-registration settings to 10 mins and 5 mins respectively as per AA VOIP help pages. So maybe it was that.

Just had a thought. I bought a kenable RJ11 to BT socket and came across another listing with a similar which had works with Grandstream HT801. Reading further it says it has a ring capacitor in it for ringing. I am unable to test as its not ported yet so I have put a dangly broadband filter which is supposed to have a ring capacitor in it in series with the kenable adapter.

Have also ordered the RJ11 adapter with ring capacitor what do ya think? Passes all the tests on the HT801 test page with a REN of 0.053.

In reply to a post by Banger:

Just had a thought. I bought a kenable RJ11 to BT socket and came across another listing with a similar which had works with Grandstream HT801. Reading further it says it has a ring capacitor in it for ringing.

The question is does the phone you're going to use need a ring capacitor? a lot (not all) of phones nowadays only need two wires as they handle that aspect internally.

It's a Panasonic Dect so probably not only way to test is when it's ported.

I think I have worked out why the 3 flashes as it started again after swapping an RJ11 to BT adapter cable which allegedly contains a ring capacitor. It fails the Foreign Electromotive Forces Test and the Phone LED starts flashing after running the test and failing.

I have changed back to the old adapter cable and it has gone away and all tests pass. The VOIP port isn’t live yet so cant test ring capacity but only have to wait a day. Thanks for the help.

In reply to a post by Banger:

only have to wait a day.

Not long to wait now Tim, one more sleep 🤣

Am up and ringing. Had to call AA to check the port had gone through as me mobile was saying "incorrect number" at 10am but the port went through around 12:50pm and all good.

In reply to a post by Banger:

Am up and ringing. Had to call AA to check the port had gone through as me mobile was saying "incorrect number" at 10am but the port went through around 12:50pm and all good.

Thats excellent news Tim

Mind sharing all the settings you changed to get it working?

I had it working perfectly until incoming calls stopped working so I rebooted the unit. I can no longer get the Grandstream to register with AAISP.

I'm behind CGNAT.