Augusto, when a shared line is active on a phone, subsequent calls on the same line will be given only to the phone that has the first call active. The I see that you seconda is on both DN 2 and 3, watch out because that deos NOT make DN 2 and 3 to ring at same time, it makes them ring alternatively.
To avoid that, you have two choices, one is for the shared/overlay DN set cfb to another DN, and huntstop channel. This second DN is also in overlay on all the phones.
Or you can try a tcl/ivr service that I wrote to ring multiple phone simultaneously:
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.