I am still a little confused about how to activate MWI with PJSIP
on Asterisk 13.9.1. I use realtime for configuration. So far I have tried setting both the mailboxes field on ps_endpoints and the mailboxes field in ps_aors but I cannot get the indicator lamp to blink on any of my phones (Digium, Aastra and Yealink). I have tried just the number of the mailbox and also adding the context.
Telecomunicaciones Abiertas de México S.A. de C.V. Carlos Chávez