I have a trunk properly registered, but everytime i call from an extension to an external number the call instantly drops. The same happens with incoming calls to he trunk (between extensions everything working properly). For both (incoming / outgoing) i get the same log error:
[2020-08-18 08:06:56] ERROR[7726][C-000435da] app_stack.c: Attempt to reach a non-existent destination for Gosub: (Context:cos-all-post, Extension:+44XXXXXXXXX, Priority:1)