No MWI stutter dialtone on FXS

Hi

I cannot get the stutter dialtone MWI to work, on my FXS port (TDM011B Zap/1), using analogue DECT phone. I’m sure I’ve had this working before, but can’t figure out why it doesn’t work now. All other aspects of voicemail work - I can leave and retrieve voicemail, and MWI works fine on my SIP phone. I’ve searched this forum, and checked all the threads I can find about this, and checked the wiki, but can’t find a solution.

voicemail.conf:

[default]
6000 => 1234 ; i.e. the voicemail password is 1234

zapata.conf:

context=internal
signalling=fxo_ks
channel => 1
mailbox=6000

I have tried adding @default after mailbox=6000 in zapata.conf, but this makes no difference.

Any ideas, anyone?

TIA,
Dave.