Checking voicemail on the Yealink T46

[SoHoIntegration]

The instructions state that to check the voicemail from a T46/48, you just press the voicemail button on the phone.

When the voicemail button is pressed on the phone when its connected to the 3CX SMB product, you just get a fast busy.
It does not provision the phone properly it seems, so the voicemail button doesn't work.

Does anyone have a solution for this? or is it to manually remote into the phones to make changes?

 

[SoHoIntegration]

So, it appears the built in voicemail button is configured to call '999' - which does not work with 3cx SMB Pro. it must be '99999'.

Can't edit the template, so must remotely access the web interface to change it?

Any help? (v20 isn't quite ready, and v20 SMB is even less ready?)